50 anniversary of the iugs - unizar.eswzar.unizar.es/perso/emolina/pdf/schmitz2011episodesr.pdf ·...
TRANSCRIPT
50th Anniversary of the IUGS
Vol.34 No.4 December 2011
Journal of International Geoscience
WI Articles
by Birger Schmitz l, Victoriano Pujaltel
, Eustaquio Molina1, Simonella Monechi4
, XabierOrue-Elxebarria1, Robert P. Speijer', Laia Alegrer, Estibaliz Apellanit, Ignacio Arenilla.,J,Marie·Pierre Aubry6, Juan-Ignacio Baceta1, William A. Berggrel/, Gilen Bernaola8
,
Fernando Caballerol , Alllle CfeJll11lensen9, Jaume Dinares-Turell lO
, Christian Dupuisll, Clatls
Heilmann-Clausen9, Asier Hilario OrLÍs l2
, Roben KIlOXI1• Maite Martín-Rubios, Silvia Ortir,
Aitor Payros2, Maria Rose Petrizzo14
• Katharilla von Salis15, Jorilule Sprong5
, Etielllle
Steurbautl6 and Erik Thomsen9
The Global Stratotype Sections and Points for thebases of the Selandian (Middie Paleocene) andThanetian (Upper Paleocene) stages at Zumaia,SpainI Ocpanmenl of Geology. Lund Uni\cn¡ity. 5E-22362 Lund. Swcden. E"I(IÍ/; birg~r.schlllj¡~@K~(}I.IU.S~
Oepanmcnt of Stratigraphy and Palcootok>gy. Uni,·et'"Sity of the Busque Country. E-48080 Bilbao. Spain,
Depanmcnt of Earth Scicnces. Zarag07.a Uni\cn;ity, E-50009 z.arJ.g01..a. Spain.
Depanment of Eanh Scicnces. Aorence Unil"cnit)'. 1-50121 Aorencc. It:lIy.~ 0ep.1nment of Ear1h aOO En"ironmcntal Scicnces. K.U. Leul"en. B·3<XJ1 Leu\'en. Belgium.• Depanment ofGeology. RUlgers Uni,·en¡ity. Pi!i("ataway. J 0885-l. USA,7 Dcpanment ofGeology aOO Gcophy!>ics. Woods Hole Occ:.lIlogrJphie In"litution. Woods Hok. MA 025-13. USA.
• Dcpanment of Mining aOO MelaJlurgie Engincering aOO Material Scicnces. Uni\ersity of the 8a'>que Counlry. E-48901 Barnkaldo. Sp.1in.~ Dcpartmenl of Eanh Sciences. rhus Univen¡ity. DK-8000 Árhus C. Dcnrnark.
nI Instituto NazionaJc di Geofiska e Vulcanologia. Via di Vigna MIlI,¡\t¡1 605. 1-00142 Rome. haly.11 LaborJtoire de Géologie Fondamentale el Appliquée. F:lculté Polytcchni(IUe de Mons. B-7000 Mons. l3c1gium.
Il Egu1.kiuldc 1]. E-20271 IrurJ, Gipuzkoa. Spain,11 Brilbh Gculogical Survcy. King,ley Durham Centre. KcywOrlh, Notlinghml1 NGI2 50G Uniled Kingdolll.I~ Dcp¡1I1rnC111 uf E¡trth Scicnces, Mihmo Univcrsity. 1-20133 Milano. haly.
l' Vi:! Maistra 9. C1-I-7513 Silvuplnna. Swilzcrhllld.lb Dcpanment of Paleontology. Royal Bclgi:m Institute of Natur:ll Scicnccs. 13-1000 Bl1.lsscls, Bclgium,
'11U! global slmrol)'pe ,~eclioJlsal/(Ipo;",sfor lile bases
of lile Se1cmdi{1/l (Middle Paleocelle) amI Thallel;all
(UtJper Paleocelle) stages lun'e beell defilled i1l lile
coasIal diff alollg Ihe Ii:urlm 8each al lhe /O\\'II of
Zumai{1 ill Ihe Basque ~olllltry, lIorlhen¡ Spaill. 111 Ihe
hemipelagie seelion e.xposed al Zumaia Ihe base of Ihe
Setwuliall SIage has beell plaeed al Ihe base of rhe11:Ilr1m Form(lfioll. ca. 49 m {Ibol'e lile Cretaceolls/
Paleogelle bOlmdary. Allhe l}{Ise ofrlle Selwldhm. mar!!J,'
replace Ihe SlIccessiOIl of Oalli(/11 red /imesf01Ie {md
limeslolle-marl eOllplels. The besI marille. global
correlarion crileriol/ for rhe basal Se/alldillll is Ihe.I'ecol/d I'lIdil11iol/ oflile imporrltll1 clIlClIreolfS f/(/1lJlOfossil
grollp. rhe fascicll1ilh.~. Specie.\' ,wch as Fasciculithus
ulii. F. billii. F. janii. F. involutus. F. pilei.llllS {//Id F.
tympanifomlis h{lI'e rheirfir.l'I appearance inlhe ;lIlen'al
from afew decimelres below up ro 1.1 m ahove Ihe base
oflhe Se/alldian. The marker!J,'l}(xiesfor1I111l1l0fossil ZolleNP5. F.lympanifonnis.jirsr occlIrs 1.1 m ahol'e rhe l}{Ise.
Excellelll cye/oslraligmphy amI mag1leroSlraligrap"y ill
I"e seclio1l cremes flln"er correlaliolltJOlell1ial, lI'il" rifebaseoflhe Selalldiall oc(:lIri1lg 30 precessiofl cre/es (630
kyr) abal'e rhe lOp of magl/eroc"ro/l C2711. Profolllulclumges ;1/ sed;mellf%gy relaled lO a II/ajor sea-/el'et
fall c"arl/cleri:e rhe f){lIIic",-Selc",d;lIIl lral/si/;O" ;1/seclio/lS alollg I"e lI/arg¡1Is of rife Norl" Allal/l;c.
r"e bll.5e ofllle Tlulllelian Srage;s placed i/l rhe ,WllI/e
seclioll ca. 78 11/ abolle I"e CrelllceOI/,~/Pateogelle
bOll/lt/ary. 11 i.l" defil1ed {/1 a letwl2,8 111 or eigll/ precesÚolI
(.')'cle,~ abol't! lile base of lile core (Jf rhe di.\'rillct day-rich
f)t'("f'm~r 101 I
il/lel"l'tll aS,WJÓaled IVilh Ihe Mid-Pa{eocelle JJiolic Evenl,
ami il corre,VJOl/ds lo tite bme olll/agl/eloclllvl/ C2611 ill
tlle ,~eetiol1. Tite !Ja,"e ollhe Tlwl/etiall is IlOt assoÓaled
lIIilh al/Y signijicclllt c!utllge ill marine micro-fil/llw 01'
flora. 11/e calcareol/s l/al1l1ofossil Zone NP6, l1Iarked by
lile jirsl oCClIrrel/ce 01 I-Icliolithus klcinpelli srar(s ca,
6.5 /JI belolllllle base olllle 11wl1elial/. The dejil/itiol/s oI
rlte global,\'r/"{/tolype poil/rs¡orIlle bases ofllle Selalldillll
al/d 71ul/lerial/ srage.\' are ill good agreemellls willl Ihe
dejil/iriol/.\' il/ lile hiSlOrical Slralotype secriol/.I' in
Dellll/ark alld EI/glal/d, respeclil'ely.
Paleocene GSSPs - introduction andbackground
In 1993 lhe Paleocene Working Group was eommissioncd by lhe
Inlernalional Suocommissiol1 on Paleogene Slratigmphy lo define
global slralOlype sections and poims for lhe bases of lhe Sclalldiall
alld Thalleliall slages (Sehmil:I.: 1994). A slage represenls lhe basie
chronoSlr.lligrJllhk unil in lhe global Geologic.lllirnescale. and lhe
base of eneh slage is de!1ned by a Globall3ollndary SIr;l\Olypc Seclioll
alld Poinl (GSSP) in ,m approprialc, ('onlinuous marine seelion. The
GSSP fepresents a poinl oolh in uncicnl time ,lIld in lhe rock record.
and ils definilioll facililates eürnmllnicmion among cal1h sdcntislS.
After fourtcen years 01' resc<lfeh and discllssiollS lhe melllbers nI' lhe
Pnlcoeene Worldng GrollP ngrced lInanimously in June 2007 on
forwarding lhe pmpOS;¡11hallhe b'1SCS Oflhc Selandian and Thanelian
slages should be pl'leed in lhe ZlIlllai,l seclion allhe Sp,ln¡sh CO¡ISl of
lhe Bay of Biscaye. Foliowing ;¡pproval.~ in 2008 by lhe Inlcm;llional
SlIOCOl1llllissíon on P:lleogclle Strmigraphy and lhe JlIlernational
Commission on SITaligraphy lhis suggeslion was acceplcd and
formaliy Talified by lhe Inlemlltiunal Uníon of Geologiclll Scicnees
on Selllcmbcr 23, 2008. This (Xlpcr gives a summary and background
of lhe research and considcrations lIndcrlying this decision.
The Selandian and Thanetian stageshistorical background
The divisioll 01' lhe PalcOl,:cnc Series imo lhree stllges. Danian,
Selandian :md Thanelian. was uecided by lhe Inlernalionll1
Subcommission on Palcogene Str;lligraphy allhc 1989lnlcrnalional
Gcologicnl Congrcss in Washington (Jcnkins and LlIlerbachcr 1992).
111e base oflhe 10wer stage. lhe I)anian, coincides with lhe Crelaeeousf
I'a[eogene boundary which 1l¡IS bccn formally dcfined in lhe El Kef
scelion in Tllllisia ¡¡(Ihe bascoflhc iridium-rich clay layer thal formed
aflcr a major asteroid or comel impact on Earlh (Molina el [jI. 2006.20(9).
Thc second Palcocenc stage. lhe Selandian, was origin'llly
describeú in Denrnark by RoscnkranlZ (1924) nnd consists of
fossiliferous glauconilie marls (Leliinge Grccnsand nnd KCrleminde
Mllr1) overlain by t1nfossiliferous grey day (now ~lIbdivided inlo
JEbcl¡, Forl1laliOIl. Holll1chus Form,uioll and 0s1errcllde Clay)
(Fig. 1), The sllcces~ion t1IK'onformably overlies Danian chalks .md
limeslones and conlains cl:lSts derived ffol1l these unilS in ils basal
part (pcrch-Nielscll and Hallsen 1981: Ikrggrcn 1994). In lhe original
121
Skema over del danske Paleocren.
o
~Rupélien Septarielero
.0'5
Lakune
Strerkl farvede, rede Lerlag Eo
Londinien ~-Lag med vulkansk Aske •ü
Graa Lerlag
Graa Mergeilag Eo
Sélandien o-o Gr0nsandslag ••u Üo.. Konglomeral (Iokalt)ro~
Lakune
• Kalksandskalk (Iokal)
~oE~ Kokolilkalk, Bryozokalk, Koralkalko
Danien o-•ü• Bryozokalk"•Lakune
Cerilhiumkalk
Lakuneoo
Maastrichtien Skrivekridlo•"'
"';gl/re l. Strat;grapJ¡ic ~'clleme lor lile I'(l/eorene ill lJelll1/l1rk byRm'e"krall/z (/924). TJ¡j,~ is lile flrst l/se 01 lile regiuJI(ll sl(lge"Sé/al/diell ".
l)'pc llle,l lhe Sclandiall deposils are o\'erlain by lhe ellr1icsl Eoeene
01s1 Formalion and Ftlr Formalion ("Mo Clay"). cOlllailling Ihe
nUl11erous. well-known '"nurnbcrcd"' n~h 1¡IYCrs (P<,.'Uen;cn ,md SlITlyk
1983). Jnlhe Norlh Sea rcgion lhe Danian/Selandiall bollnd:lry reneelS
lhe end of ca. 40 mili ion ye.lrs of conlintlotls deposilion 01' open
marine cllrbonalcs. alld rcprcsenls a major ch'lI1gc in lhe leclonic
evolulion of lhe northcaslcrn Allllnlie (Ziegler 1990: Berggrcn el al.
1995: C1cml11cnsen ,md Thornscn 2005: Niclscn el al. 2007), 11 is
nOlable lhal ulllil lhe middlc of lhe 201h cClllury lhe Crelaceou~
Paleogenc boundary was slill oflen plaeed al lhe IOp of Ihe Danian
limeslone (see rcvicw in l3erggren 1971), Hu.~d on Dilnish OlltCrop
scclions, ¡he DmlianfSelandian bollndary has lr.ldilionalJy bccn plm:ed
neaf lhe pl.mklOnic fO[";ll1linifer.t zones P2IP3 bound,lIY (e.g.. Berggrcn
el ,11. 19(5), bUllhis renecls lhe c)(islcnce of mlljor 1I1lConforlllilies m
lhe Iimestone/greensand ooulldary. Lller sllldies of more eontinllolls
drill cores in lhc rcgion in(]ic¡¡lc a !llore gradual lilhological change
and [j signiJiennlly yOllllger age. in lhe middle of ¡he Zone P3 alld
dosc lo lhe ealcareous nannofossil zones NP4/NP5 boundary
(Thomscll aud Heilmanll-Clllllscn 1985: 111o!llscn 1994: Clcl11mensen
and 1110m.'\cn 2005).
111
The Thanelian Stage coocept was firsl u~ by Renevier (1873)"00 includcd the 11lanel S;mds with C.'1'rinu IIwrriI and lile Woolwichand Reading Beds with Cyrt'11l/ nmt'iforlllis. lis mcaning W3~
subsequcntly narrowed by Dollfus (1880)."00 induded ooly lheThanct Sands. theoriginallype-strnl3 on lhe Islc ofThanct in SOUlheastEnglaOO. Sil1e'e [880 lhe lenn Thanctian has consistenlly been usedwilh lhe restricled meaning of Dol1fu~ (Bignoc et al. 1997). Inlensi,cbl(). and magnetoslrnligr.lphic sludies and sequence slraligraphicanalysis 00 OUlcrops and wells in !he Iype area ha"e Icd lO a delailcdundecslanding of the e"'tenl of Ihe Thanetian with regard 10 lhcmagnelobiochronologie lime M:ale (Aubry 1994). The historiealThanetian slrata span calcarcous nannofossil zones NP6-Nf>9 ofManini (1971 l. polarity chrons C26n·C24r (AH and Jollc)' 1996) anddinonagcllulc /.Ones Viborg 4 and 5 uf Heilmann-Clausen (l9K5.1994). Studies of drill cores show lh:u lhe baM: of lhe hislOrieulThanetian SI:Jge lies in lhe upper pan of Zone NP6 :llld dose lO lhe
base ofChron C26n (Hine 1994; Kno", 1994a). A m¡¡jor incrc¡l<,C inIhe abundance of the dinonagellale Misocysw gipl'illgt'l/sis iscoosidered a useful e\'enl for l'\."'Cognizing lhe base of lhe Thanclian",ilhin lhe North Sea Basin. while Ihe last occurrence ofPO{lIrofxoridiniulII P.,·rotHIOn¡IFI aOO PlIfot'ocyswdillilflll alu/rt¡!imlllll
blllfifofflU! are late SclaOOian cvcnlS dUI are useful for inlerrcgionall.:orn:l¡¡lions (Heilmann-C1ausen 2(07).
Thc Zumaia scction - gcography andphysical gcology
Thc Zumaia SlXlion is pan of an essenlially l"Onlinuotls lowerSantonian 10 lowcr Eoccnc sea-eliff oUlcropping along lhe coastuf lhe GipuZku¡} province hulfway betwecn Bilbao and S:mSebasti:m (Fig. 2). The P¡lIeocenc p¡ln of lhe ~cction is represcnted
(1) Lower Maastrichllan: medJum-beddedturbidles.
(11) Upper Maaslrichtiln: purple mlns. greymarly limestonea ancl thin-bedded lurbidrtn.
(111) Aitzgorri Limestone Fm. pink-grey~meslOne$and mam.
20 Km
Cinco villasmassif
road lo Ihesection
GipuzJ<oahomocline
",",",....,"",..,..,.,"
San Sebaslian
300 m
BAY OF BISCAY
Biscay syncllnorlum
to Bilbao
oBilbao
Marianlonheadland
• EOCENE
B PALEOCENE
D UPPER CRETACEOUS
D PALEOZOIC
Itzurunbeaeh
~
Iberia Ü_Marine OTerreslrial
(IV) Itzurun Fm. grey Irnettones. mlM Ind lhinbedded t~bicnes
<V) Lowul Eocene. red-dlrk grey Iuliln (roreof Ihe elE). tollowed by Ihin-bedded ailiclClaslicIurbidilea.
(VII Lower Eocene. Ihlck-bedded lurbldiles.
~'
e
figure 2. (A) Gelleralized eady f'a/eu¡;cl/f! pafcogeogropllic ma,} (if WeYlerll Ellrope: (B) Simp{i/ie(f geu{ugic I/UlP (Jf Ihe y/mly regioll.
sfllJ ....illg lile most importalll I'u{eocelle olllcro{JS ulld '"e {oc(l/iol/ of Ihe ZimUlio beadl seetioll; (C) Geofagic III(IJI of tlle UfJf'er Crelflcemu
- f.,l)K"er f'o/eogene {l/(lcr(Jp.~ in lile Z/lmoio (lrt!(j.
l1J
by a ca. 165 m Ihid. cssentially complele f'CC<lI'"d exposcd along lhe
main bcach.lhc It..:urun Bea<:h. oflhe eoaslallOwn Zumaia (Ialiludc/
Ioogilude4)O IT57.1~ N/2° IS'39.6~W;Spanh.h...pcllingis "Zumaya".
bul we u;,e here lhe original Basquc: narne). 1ñe bull: of lhe Paleocene
is represcnled by rhYlhmk allemaliolls of hemipelagic dcposits in
lhe fOll1l of indur.lIcd limestooes. marly limcslones and marlsloncs.
plus numerous inlercal;nions of Ihin-beddcd lurbidilCS (Pujalte el al.
1995; Bacela 1996: Pujahe el al. 1998a). 1ñe dislinct stnl.ligmphie
e)'ClicilY has becn altribuled lO orbilal forcing (Ten Kale and Sprengcr
1993: Bacela 1996: Oin3.fts-Turell et al. 2002. 2003. 2007. 2(10).
1ñc scdiments werc deposilcd al an l$Iilllalt.'d waler dcpth of I())) m
col1'C!>ponding loa middk lO Iower balhyal selling (Pujallcet al. 1998a:
Arcllitla.~et al. 200S). Scdimentation was hClllipclagic wilh a lerreslrial
eOlllpOllenl supplied axially from !he emergillg prolo-Pyrences and
rnarginally from shallow ('urbomlle plmforms 10 lhe soulh :md nonh
(rig. 3). Olher Ilearby scclions such as Ul Ermuu. ca. 25 km 10 lhe
snulhwcst. Ilrovide records of lhe scdilllcnlaliol1 in lhe base 01' slopc
allron fringing lhe soulhem earbon:'lle plalform (Fig. 3). and conlain
a higher fmelion of lerrigenous maller. and also curbonale 51uml)
dcposil.\o ¡¡nd eakilul'bidilcs (Baceta 1996: Pujalte et ¡tI. 1998a; SChlllilz
el 1\1. 2001). Oue 10 lhe supcrb qualilY of ils exposure. lhe Zumaia
S<.'Clion alrcady :.lIIracled Ihe attention of piooeerworkers in Ihe regioo
(e.g.. Gómez de L1arcna 1946). 1ñe Zumaia <óCCtiOll was also subjecl
lO imponant ichnological sludies. e.g. lhe c1assic Sludy of lurbidiles
and Iheir associaled pre- and po!Jdeposition:allfXe fossils by Scilacher
(1962). h was I:uer lhe subjccI of );eneral sludies of planklOllic
für.lminifera (Hillebr.mdl 1965). cakareous nannofossils (Kapcllos
1974: Van Vlicl 1982). deposilional scuing (Van Vliel 1982) or"C<Iueoce Slrali);mphy (Bacela 1996; Pujalte el al. 1998a.b). lO
menlion a few. Several papers ha\'c focused on lhe Crelaecousl
Paleogene aOO lhe PalcoccnclEoccTlC bound.1rics. inc1uding Ah'arez
et al. (1982). Wicdman (1986), Smil and Ten Kale (1982). Canudo
and f\.'lolina (1992). Goroslidi (1993). Ward and Kennedy (1993).
Canudo el al. (1995). Oniz (1995), Kuhll1 and Kaminski (1997).
SChmill el al. (l997a). Molina el al. (1998.1999). Knox (1998).
Apdlani~ (1998). Arenilla~ et al. (1998. 20(4). An el al. (1999).
Adaue el al. (2000). Arenillas aOO Molina (2()))). Bcmaola (2002),
Orue·Elxebarria el al. (2()().l) and Caballero (2007). These 11.\'0
importanl boundarics. lhe base and lhe top of lhe Palcocene. are
cxcellentl)' exposcd aOO prescrycd in lhe secliOll along lhe Itzurun
Beaeh c1iffs. Zumaia was in fael the main ehallenger for hostin! the
GSSPs for bolh lhe CrelaceouslPaleogeflC and lhe PalcoccnclEoccflCboundaries, Ihal were e\'entually placed al El Ker (Tunisia) and
I)ababiya (Egypt). respecti\'e1y (Molina el al. 2006. 2009: Aubry el
al. 2007).
The GSSP for the Selandian - position,stratigraphy and completeness
Precise posilioll
The base of Ihe Selandian StllgC, lhe second or middle stage in
the Puleocene Series. is placed al lhe base of lhe Itzunm Fonnation
in Ihe SCClion al hzurun Beach in Zumaia (Arcnillus el al. 2008;
Bcmaola el al. 2009).lbc str:lIotypc point for lhe basal Selandian ¡s
equivalen! lO lhe base ofllle marls o\'crlying lhe uppennosllill1C.\olOne
Ix."d of lhe ca. 10 mctcrs of limeslone·marl couplelS in lhe uppcr panof lhe Aitzgoni LinlC:'ilonc ronn:nion (Figs. 4-9). 1bc base of lhe
Sclandian is Ihus ca. 49 melcrs above lhe Crelaceous/P-dleogcne
boundary. fol1owing lhe log of Oinalts·Turcll el al. (2003).
LirllOsrrotigraphy
lñe Ai11.gorri Limeslone r-ormaliOll is dominamly made up of
reddish ¡imestone. wilh varying amounts of rhythmicall)' appcaring
marl inlercalalions. wheteas lhe dominant lilhology in Ihe lower pan
~.
Rlpoll ...
•
• Tremp
~."...~'-- .
REFERENCE SECTIONSZu: Zumaia, Er: Ermua
Un: Unanu, Lz: Lizarraga, Kr. Korres
~''-
'o 'Huesca
I~base·of·-- Slope aprons·_
(hemi)pelagicbasln
1,""\1 outcrops
"
': • " ~oulouse '-~.....~•• ,;<"
~.
. ~,
;:;;.~~ ""'->
LEGEND
I ' 1continental areas.... .... (fluvial-Iacustrine)
p:::;:::r::::;:: shallow-marinel:!:::::::I::::::: carbonate plalforms
I Ireefal& constructions
~. 100 Km~~11
tunan
'<e?
[ LATE DANlAN (-60 Ma)
Figl/re J. tale f)alliall pafeugeugrllflllY afilie /'yrellellll domoill willl rcferellcl! .\'ecliall.~ amI IOCll/ifie.~. //mlll /JaccUt el 01. (1004).
t.¡modes lh/.].I. 110. 4
124
f-igllfe -l. (AJ Tlle IIpper IRlIIia" lO lowu TI/auelia" see/io" iu lile clifJs al 11:,Ilnlll Beaell,The bas#')' /Jf lile Se1tJIIlli(1II (/lid TlulIIelÜ(II stllges ure morked by bJue ulld )'cllow U"es,
rcspeelil'ftr)', rile II'ltile sqlUlre is elll(fr~e(f ill Fig. 7. (U) (//Id (e:; rile GSSI) ;'gIJI(II~f1 sl,ike.~"
lI'ue pluec(1 al lile buse)' afilie Sc/(Jlldiall ami T/wllcliulI IJII May 6, 2010. (O) Tlle base oftheT//flllelitm Stage. (E) Tite /Hlse of lile Sefalldioll Stage.
,,
of lhe \lluron Foonalioo is greyish marlslOncs: howe\·er. color aOO
liloology \ary Ihroughoul lhe formalion. 1ñe Dani3nJSelaOOi:mboundary is dcliot:d at lhe abrupt liloological change belwccn lheIWO fonnalions(Figs. 4--9). In lhe uppcrpan oribe Ailzgoni UTT'IOIOfle
Fonll:llion. largcly of pin"-n.--ddish colon;. lhe lower "crow<k.'1I" aOOlhi..- uppcr "'tmlified" mcmbcrs can be distinguishcd (B:lecla el :11.2006). The cmwtled melllbcr is 7 m lhick and cOllsislS of IimeMones
amalgalll:lled or Wilh very lhin m¡lrly inlerbcd~. TIle Slntlified mCIllOCr.
9 Ullhiek.lakes ils name from Ihe wel! dcfincd rttYlhlllic bcdding alldIhe clcady di'linguishable marl-limcslOne altem:tlions. Some of lhebeS! exalllplc:. of so ¡'alled bundlcs repre,cnling the ea. lOO kyrecccntricilY cycles can be idcnti ned in Ihi:. pan uf lhe sa:lion (I)inares
Turell el al. 2003). The lo\\<cr ca. 15 m of lnc overlying ItJ'UfOll
Formalion exhibi's higher \ertical \'ari3liun~ in boIh Ihe rel:nheproportlon' tlfhemipelagie -.cdimenl!> aOO lhe ffl"<luelll.~y oflUrbitlileintCrc31:tliOfl~. Dar\: lO lighl grey colon; dominate lhrough lhe 11IufOn
Fonmuion, bUl lhe basal 2.85 m interval of mllrls and marlslone" hasa characlcri.'li{· red color (Fig, 7) (Schmill el :11. 19(8). The Ail/.gorriLimC'lonc Form:nion has prc\'inlt~ly bcen rcfcrrcd 10 as lhe Danillll
LimeslOoe Formalion (e.g .. Apellani:r et al.
1983). howevCT. :K.'COfding lO lhe guidelinesof the lnlernation31 Commission on
SIr:l1igmphy. lhe n:Hne of formal slr:ttigmphkunil" (i.e.. group. fonnalion) should consi:'>t 01'¡U\ approprialc geogwphic n:lme combinctl
Wilh 'In appropriale leml indiealing lhe kind:md mnk of lhe unil (Bemaola el al. 2009).GeogrJphic name.~ should be t1erived fmm
pcmlanent naluroil or artificial fealure!> near lhe~lr:nigraphic featurc. If a liloologic !con is
:MkIt.'1I lO Inc name ofa lilOOsIr:tligrnphk unilil ~hould be a "imple aOO gencmlly acceptcdlenn Ih:!l indicllll::- lhe predoOlin:1Il1 lilhology
oflhe unil.Cureful e)wlllinulion of lhe Ailt.gorri
Limeslone/ltzunlll r0n1mlion:11 boundary ¡111he
Il:ruron Bcuch :'>CClion and in.lwo :tddilionalscclions in Zumaia IOCalcd closc lo lhe N634
ruad lO San Scha"tian. 00 lhe easlem hank oflhe Urola ri\er moulh (Fig. 2). iOOicates lhallhis lransilioo is elearly conformable. 1llcre i~
no evidcnce for llny erosional gap or omi.-.sioosurface al Ihis 1c\'Cl. Throughoul lhe DanianlSclandian bOllndary inlerval lirncl>Ione-marl
lfllllsilions are alW¡IYs gmtlual :md no evidencefol' hardgrounds or slmtigf:lphic dia,,\cms h:1S
bccn idcnlificd in lhc bcaeh cliff scclion or inother scclions afllund Zumuia. TI1C presenceof 1Urbidilt.~ (only fi\e Ie\'els obser...cd) <loes
TlOl il1volve erosiono since lhey Inol>Ily occur
lIS lhin or \'ery lhin plane layCN (0.5·5 cm) withTc·e 80um3 internal scqucnce~ and baseslacking evidenee of ch:lIlllCIHng or erosiooal
troncalion. Trace fossils. OO/llffiOn Ihrough lhewhole interval. mainly Zoophycos. I'/(moliles,111(1 CIllJlIllrile:'i. show no cvidcnce of
IIlUlClllion. Precise bcd-by-bed corrdlllion ispossible ;lCrosS lhe whole basin noor domain.
e\'en bcl.....ecn scctions 100 km ap3rt. such asSopclana aOO HcOOaia. funhcr iOOicaling loc!; of m3jorunoonformilies
(Bacela 1996: Puj3lte el al. 19983).
Ca/(:areolls IUIIIIIO!OssiJs
1llc exp.1nded n:lIUre ofthe Daniau-$el:tndianlr,msitiun ¡II Zunmia
is cvidel11 from lhe l;r:ldual sequenee offi~l 3ppearances oflhe Iypic:tlt¡t!c¡lrcOUS nunllofo",ib 01' lhe period (Fi~. 8. rrom Bcmaola el al.
2009). For examplc. lhe stnllignlphic di"lancc bctwecn Ihe firslt1ivcrsificalion of ""rl.\'dClffilllllS and Ihe fi~l occurrcnce (FO) (usedin lhe same sense 3S lowest O('currcnce) of ""(UciCflJiIIIflS
t.fmfNmifimlli.f 3l Zomaia io¡ aboul 1I 111. This is ca. 6 m lhicker lhanin lhe !>Cl:'lion al Qreiya in lhe Easlcrn l)eSCfl of Egypl (Moncchi 300
Rcale :!007: RlXlñgucl aOO Aubry 2(07). The e:o:p:lI1dcd fI:Ilurc uflhen.'(.'O«l al Zumai3 i.. 31so apparenl by lhe lhiekncss. 13.6 m. bclwccn
lhe FO uf SpflelU)lirllll.\ l,rilllllS lO lhe FO of F. IYlllfNlllifimllis. lñcb.1:'>C of nannofossil Zime NP5 according to lhe SChclllC 01' Maflini
(1971) i" ddined hy lhe FO of 1': IYllllxlllijtJrmis. which is localcd1.1 111 abo"c Ihe hase of lhc IIzurun FormUlioll, i.e. Ihe h:l"C of Ihe
1Jt'N'llI""r 20/1
115
Chill.mw/itlws I'I/ell//I/1I3, which
marks the base of 5ubzollc NTp7b of
Varol (1989). ca. 10 m below lhe lop
of lhe Aiugoni Limestonc r"Ollllalion
(Schmill el al. 1998: Bemaola el al.
20(9). In sumlllary. lhe scquence uf
ealcarcous nannofossil e\'cnts sho\\ s
Ihm lhe Zum.tia scclion is COlllinuous
o\'er lhe Danian-Sclalldian trnnsiliofl.
This is also confinned by compariloOll
wilh thccalcaR'OUS nannofossil recordofODPSile 12620fLeg208 at Walvis
Ridge (501l1h AlI¡lntic) whcrc an
cX]XllIdcd and conlinllolls Palcoccnc
dcep-sca scquence has been reco\'en.-d
(Agnini el al. 2007: Monechi and
Reale 2(07).
PlonklOl/ic (111(1 belllhic
foramillifera
A
11
The prese..,..alion of for.uuinifern
is mooer'3le in lhe Zumai:l seclion.
hence sorne l:lllOnOmie problcms arisco
Wilh different rescarehcrs using
differcnl 1¡I;wnomic eoncepls 'Ind
di:lgnostic eriteri:l. Problcms in Ihe
ddinilion of planllonie fornminifernl
zonc boundaries in lhe Zum:ai:l scctiOll
have bccn earcfully CvalU:lled by e.g.
Cabnllero (2007) ;md Orlle-Etll.cbama
el al. (2007a). Once Ihesc dcnnilions
are unlangled and agrecd upon.
bouooaries can be placed wilh high
precisiOll. giving strong support foe"
lhe conlinuilY of lhe Zumaia seclion
;Il:ru~s lhe mid-Paleocenc.
B¡lscJ 1m pl;mklonic and bcnlhÍ\,;
fornminifcrn. iSQ(opic and lilhologic
data. Arenillas el al. (2008) h:l\C
localed fh-e signirK.'1Inl c\'cnl horizons
lhal h¡l\'C bren l."()flsidcrcd a~ poIcnlial
(:orrelalion crileria for Ihe DanianlSclnndian bollndary (Fig~. 5 and
9). Thc sequcnce of foml11inifcm c\'ellls ¡¡¡ Zumaia and comparisons
wilh scclions c1scwherc also give support for Ihallhe lomaia SCClion
is continuous and ellpandOO. Levcl HDSI. ca. 13 m below lhe lopof
lhe Aillgoni Limc~looc Forma!ion. is characteri/.cd by increa~... in
ACllfi"ilw. KarrerulillO aOO Slnrot1!t!C/(lmm;'lO. aOO corresponds lO
Ihe lower boundary uf lhe IHom;:tI\·t'lIlI (/118111(/1/1 Zonc; somc aUlhors
formcrly placed lhe Dani¡m/5elandian bollndary al this biohoriwl1.
i.e. allhc P2IP3 zonal boundary (Bcrggren 1994: Berggren el al. 1995:
Sleurbaul el al. 2<XJO). HD52. ca. 9 m bclow the lop of the Ail:lgoni
Limcslonc Funualion. is charnctcri/.oo bY:ln iocrcase in Moro:PI·,.f1aaOO corrcsponds lO the lower boundary ofthe MIJfl1:1II·t!//tI d. lll1Wtlri
Z(me by Arenillas ;md Molina (1997). lllc lowcr bound¡lry of lhe
MOIV;¡ll'elfll (Jcdl/,m Zonc of üTtlc·Elxebarriu el al. (2007b) occun.
ca. 7 m bclow lhe top of lhe Ailzgorri Lirncstonc Fomlation. HDS3.
ca. 7.5 m bclow lhe lop of Ihe AilZgoni Lirne)lone Fonnation. i"
eharaclcril:ed by an incrcasc in Kar"nll;,w :md nwimum \'alues in
1l1JS.l
ItIIS I
Sf.I.ANUl"N
It"turun "'11\.
5cl;lIldi:1I1 (Sehmil7. el ;11. 1995: Bemaoln el al. 2()()1). AnOlhcr
importan! global n:lnnofossil evcnt is :1 major radialioll oC lhe
fasciculilhs. which slans slighlly below Ihe 10p of Ihe AillgOrri
lJmestone r"'Omlalion, v.here lhe Fü of F. Il/ii s.). is recordcd aOO
continues lhrough lhe base of tne Il7.uTtln Formation. where the FOs
oC F. hUm, F. ftmii. F. ¡m·O/llm.f. F. 1)"/IIptl/lifimllÜ and f: pi/(,(l/IIS are
recorcJed (Ikrnnola el al. 2009). This radiation is hcre nal11ed lhe
M:cond mdialion of lhe fascicllJilhs becausc an carlicr r..diation of
slllall Fascicll/illms is recordcd 10.2 m bclow lhe top of lhe Aillgoni
ümc:stone Fonllalion. An imponan! regional e\'cnt is lhe las¡ common
occurrcnce (LeO) (01' lhe eOO of lhe: :lCme) ofme BrtlarudospJ!(/t!m.This genus exhibilS an abTtlpl decline in lhe relalivc aOO absolulc
abundan<.'C in eonncction Wilh lhe shift fmm lhe Ail1.g0ni Limc.\IOIlC
Formalion lO lhe lt1.unU\ Form¡lliofl. Olhcr import.ml nannofossil
evenlS recorded in lhe slrntigr..phic scqucncc al Zumaia includc lhe
fil'!ot r.m: occurrence of NfflChiaslOZJglu '>t't/t!CIUS in lhe uppcm1OS1
parl of lhe Ail:lgorr; Limestone Formalion and Ihe Fü of
Figllrt! 5. I'QtlOramic pllOlOgraplls of 111t! I)(",io" olld /Jalliall·St!follditlll lrallsi/ioll al Zmlloio. rile,-,jtrt!IIU sur/ocn I/DSI lo II0S5 ore discusst!d i" lile tUI olld sllOM'tI in grMltr dewil ¡ti Fig. 9.SurfoCt! 1/054 co"t!spollds to tlft! defillt!d base of tire St!folldioll S/agt. mar/ud by orallgt! atTOM·.
(A) Stratigrapllic poSitjllllS oftlle IlOriUlIls UDS 1 lo 111)55 ill l!le Ilpper block of ti lIorll/tll falllt /llOtoffecb t/¡e f)(I"ioll·Selo"dioll IrtlllSilioll. (lJ) StrOligrapldc pa.~j¡jol/.~ (JJ lile Creltlceo/lsll'tlleogellt!bOlmdory tlI/d tlle IlOriUlllS 11051 fo I/IJS5 ill tlle fOM·t!T block oftlit fallft. 111 (A) ol/d (11), /lolt! lile
rt'pefilioll aftlle IIppt'T lNJllioll st!qut!lICt! OIOllg file sectio" buou$e ofllle foull. f'TOI1I Art'lIi11os t!1 al.(1(}(J8).
E"iwHft'~ \'<1/, J4. 11<).;/
116
Red MlIrI
C26
."
ZUMAIA 5ECTION
n __ •• u __
-"
AitzgorriIimestoneFormation
ItzurunFormation .5
-GSSP--...
./ Clowded F1i membel •/ (¡,
/-..... Aitzgorri lms. Fm
Itzurun Fm: __
m~t-' B" ---...- IIrMified¡ • mem_
... mem_A F2 ....
/ ./,' ...../ Y,l
.... ,••
Figu~ 6. (A) rOlloro"'¡~ ¡'¡ew of lhe Dollioll-Sdalldioll lrrlllsitioll: (B) SY/ltll~lit: sketcll of tlJe IJalliulI-Sdaudioll trrlllsitiollOlltCrop i" tlle /t:urull Beuch, sholll'ing tlfe distriblltiOlf of tlle moill litllOlogical u"itslm~",lHn olld tlle f01l11 sYSltlllS tllal
disrupl t'ft $lfccnsioll. (e) O~tailedIitllOlog ofIh~ IJa"iDlI-Selandian trol/sition, (x) alld (1) "ferellc~ le¡'t/s ill sketcll B alld C.Frofll Baceta el al, (1006) IlfId {lemaola et 01. (1009).
perccnlages of MIIIY!:.JJl'elfll. coinciticl1l wilh II shifl in color of Ihelimcslonc-marl couplcts from greyi~h lO more I'l..-.odi~h. HOS4. whichOCCUI'" al lhe D.1SC of lhe lt7.Uron Formalion. may COI'TC5pond lo lhe
10\locr boundary of lhc IgorillllllllsiJfll Zone. as dcfincd by Arenillasel al. (2(X)8), Ü\her fealurcs flOlOO allhis be! are a slighl dccrease in
Moro:Pl'l'lIa and increases of lrochamminid~aOO S"¡rol'{t'clll",,,,;nll.HOSS. ca, 3 m abovc the base of lhe IlZuron klrmalion, coincideswilh lhe ~hift fmm ~1!>.11 red lo grey Sclandian marls. Minimum valucs
in lhe percenlages of Mnro:(JI'I'lIlI :md maximul11 values for IJlfarillllare rccordcd hcrc.
Benthic foraminifcra givc dClailcd informal ion aboul 'hepalc0b3lhymelry al Zumaia. 1l1e presence or organically t:emcnlcdaOO calcareoos-eemellled agglulinated fOr.lminifern of lhe "nysch
I)'PC" fauna. suggesb a minimum walcrdeplh corro.ponding lO lower·middk: bathyal dcplhs. 1be benthic foraminifcral a~semblage~ al..;ocOlllain abundanllaxa lypical uf dcep oolhyal environmcnb such asHu/i",i,lll IfinilllII'II,\·is. Cibidllf/it!I'.\ hyplw/IH. Cibiddoillcs
I'('/as{'()('ltsis. Gyroidilll)ide,\' f.:/"IHJSIII', SI('luiOI'iIlO be/TlIriifol"mis.
Nlllla/fides Ifllemp,,;. OSllllf.:ll/lIrhl ,'dllS/'Oi'/I.Ús. NlIl/al/i"I'IIl1
flOIl'lI/Ü', GUlIllf)'illll I'yrtllllidllla and Spiropll'ClallllllitW SIH.'c/abifis.
M(KI oflhesc ~pecie~ are l)'pical uf lhe Ve!aSCO-I)'pe fauna (Berurenand AubcTt 1975). Thesc dala Qlpport deplhs of ca. 9(X}.1100 mcten.
or middlc lO lowcr slopc. in agrcemenl wilh Pujallc el al. (1995). In,pilc of lhc sea-leve! falllhal ha!\ becn documcnlcd fur Ihe base oflhe
SclaOOian (M."'C bclow). bcnthic fOrJminifern show no major ch:mgcsin coincidencc with thal!eI·c1. probably bccausc lheir dcep habitat (alhou~ meten¡ dcpth) \loould 001 be affected cven b) a majo!' "Ca
leve! fall (Arenillas el al, 20(8).
Magneto- ami c)'clostrarigraphy
The Zurnaia .'>CCtion has providcd an unprccooenlcd inlcgr.ll,;.-J
biomagoelo- :lI1d c)'do~lraligr.Jph)' forlhe P-,¡Icoccne (Din~-Turellcl al. 2002. 2003. 2007. 2010), 1l1e M:C1ion now providcs the firsl
complelc aSlronomically derh ed Paleocene chronology \lo here allpolarity chrons nave been eSlablished. rendcring Ihis sect.ion a ma.'ICfreference sc:t:lion. 1l1e oose of lhe Sclandian occurs approximalely at
Ihe 101' uf Ihe lower lhird uf Chrtln C26r. The nexl luwcrmagnclochron. Ihe lap of Chron cnn oecurs ea. 9 m bclow and lhis
chmn sp;.U1.~ cil. 4.S 111 of sccliun (Fig. 8). Thecyclc-duralioll cslirnalC'f\lr lhe cólical dm:lIlO"lones across lhe uppcr Danian and lhe Dani:mSclaOOian Ir.Ulsilion are lt., follows: C27r (50 preression c)'cles. lOSO
I..yr). cnn (IS prt.'CeSSion cydes. 31S k) r). and C26r (133 prece"sionc)·c1cs. 2793 kyr). 1l1e b:l'iC of lhe luurun Fonnalion jo¡ localed 30
127
Piglfre 7. rile trmlsilif", fmm 'he 1.85 111 Qf red morl.l· to 'he flrst
grey bed.l· ill lile fower parl of file 1tZIIfIIII POflllflfioll. see IIIhi,e
sqllare ill Pig. 4for l1fecise /ocatioll. Ref! bed~' occ/lr /lfJ lo ca. .1.51/1. afler II'hil;/¡ bedslllfll COI/lllfelely grey.
prccession cycles (630 kyr) aboye lhe 10p ofC27n. Precession cycles
can <lIso be useu for ;¡ppro.linl:lle cslilllatcs 01' rcl;llivc limc differcm:;c
belwccn uitTcrcnllilhologic and bioslraligraphic cvents. Forex;¡mplc.
lhe onscl 01' lhe second radial ion 01' Ihe fasciculilhs and lhe FO 01'F. l.rtlll)(fIIiflJrllli.~ oecur res¡x:clivcJy 21 kyr befure alld 84-105 kyr
atier lhe Danian/Sclandian boundary (Bemaolacl al. 20(9). According
lO some gCllcmlized slI":ltigraphic schel11es (e.g.. Berggrcn el ¡ll. 1995.
LUlerbacher el al. 2(04) lhe IOp 01' Chron C27n is cOllsidered lO
coincide wilh lhe pl:lIlklonie foruminifera 1'2/1') 1.0n¡1I bound<lry. i.c.
Ihe levcl where also lhe Dallian/Sclandian boundary has been placed
by convcnlion in lhe pas\. In lhe Zumaia seclion Dinares-Turcll el al.
(2007) place Ihc P21P3 bolllldary ca. 8 111 bclow lhe 10p 01' C2711.
whereas Arenillas el al. (2008) place lhis boundal)' 9 111 higher. Le.
one meler aboye Ihe 10p uf C27n. This discrepancy in foraminifcral
zone bollndaries rcl:lles 10 lhe use 01' ditrerclll !axonomic conecpls
und il1uslrales Ihe general difficulty in placing precise boulldaries
in a graullul. cvolulionary scqllcnce uf l11orphologic¡t1 change
in foraminifera spccies (Caballero 2007: Orue-Elxebarria el al.
2007a).
A robusl Aslrollol11ical Polarity Time Scale (APTS) has bcCIl
conslrucled during lhe lasl lWO decaues. slarling al lhe young elld 01'lhe limc scale aud lhen l110ving progressively dcepcr in time. A recenl
¡1~'hie\'eI1lCnl in Ihis effor! has bccn Ihe completion 01' an a~lronomical
lime scalc for lhe Neogcnc. rcsulting in lhe "Aslronomical1y Tuned
Neogenc Tillle S~'¡j1c" (LollrcllS el :11. 2(04). TlIlling lhe P:tlcogellc
bccomes more cha!1engillg despile new full numerical solmiolls for
lhe Solar Syslcm (V¡¡r¡tdi el ¡jI. 2003: Lusk¡lr el ¡t!. 2()().¡) due \O
limilalions inherent lO lhe Ch:lOlic bchaviour of lhe Solar Syslem ¡¡nd
i
Id'
I
(al OIna.b-Tu.ell el'" 2003(b)loIlowlng Martlnl (1971)(ellollowlng Varol11989)
..J..J FO C. edentulus1st radiation of Fasclcullthus
..J FCO S. primus
..J FCtO S. primus
(e) MAlN BIOEVlONlS
..J fe T. eminens
..J fe T. tovaa
..J FRO S. primusNTph
Nlp8a ..J Fe N. perfectus
N"
f--+.",,~..J fe F. tympanlformis~~Nl ..J-, EA B. bigalowii
2nd radiation of Fasclculithus
~C26r
NP5 NTp9
(a) (b)
-,"
=
--
SAMP. MAGN. IOZOAATIO
.,
IIra1lt1~
member
R~Marl
.,.
."
¡'"mal iltonel
erowdedmembe.
---------·--10
GSSP--Om
ZUMAIA
AitzgorriIimestoneFormation(Danian)
ltzurunFormation +S
(Selandian)
Piglfre 8. llllegmled lititostraligmplty, mflgllelostmligmphy lllld ca/careO/U" I/flflIlOfossil hio.~tmligm/lhyofthe Dal/iull-Seflllldillfl Iral/sition
ofIhe ZUlI/aia sectiol1. l.ocfltioll oft!le maill bioel'ellts ami s)'lIt!lelic dislrihllliUII «lid ohul1I/allce rtll1ges ofSplll.'lIolilhus. Fasciculithus "lid
Branrudosllh::acrlL ¡:O"" First OCCl/rrellCe; FRO"" Fint Rare OccflrreflCe¡ PCtO"" Fint COl/tillllOIIS OCCf/rrel/ce; FCO= First COflllflOIl
OccllrrClIce; EA= ElId ofAcme. From lJemaol« et al. (2009).
UN
Din:u"Cs-Turell el al. (2003) luncd lhe
orbilally driven lilhological Danian bundlesal ZUlllai¡l (lhcir E-cycles) lO lhc Va03_R7cccenlricity SolUlion lurgel (Varoldi el :11.2(03). Tuning was S1artcd by correlating IV.O
consecutive I'rOminenl carbonate-richbundle eycles (E·3S and E-36). al aboul 38m aboye lhe Crelaceuus/Pateogene
boundary. lo respective ceccnlricity cyclcsal a peculiar low-arnpliludc eccelllricilYminima nade in the solution IMgel. which isrclaled to Ihe very long ca. 2.8 1o.1yr
eccentricity modulalion c)'c1c. 1ñc luning
subsequently I'rogrcssed by corrclalingsoccessivc ax.'cntrieilY bundles in lhe scctiolllO succcssive cccenlricilY minim'l. Following
thc lllning. Dinares·Turell cl al. (2003) arriveal an a!lC of 65.830 1o.1a for tl)e CrctaccouslPalcogene boundary. Kuipcr el al. (2008)instcad use an altemalive stralegy of cycle
panem rccognitioo and luning lo lhe lI'IC)re
slable 4OS-kyr long cecentricity cycle and
incorpor.Lle Ihe ul04 solulion (Laskar et al.20(4) as largct. lnfcrcnces fmm lIun1cric¡t1daling c1sewhere led Kuiper al al. (2008) lO
JlffiPOSC two ahemative luning schemes foreach astronomical largel ~olution. The
favorcd one. resulted idenlical lO lhe oneproposcd by Dinares-Turcll el al. (2003) formosl of lhe Danian. tI is only below
eccenlricilY bundlc E-14 (lIl aboUl 17 m
aoove Ihe CrelaC<.'OOslPaleogene bl.lundary).Ihal Ihcy ehoosc tO calibrate 10 one
ecccntricity cycle oldcr. reaching an age uf65.940 Ma for lhe CrelaceousIPaleogeneboundary in lhe Va03_R7 large!. I-lilgen et
al. (20 IU). while maintaining Iheir previollstuning f{lr ZUJll¡li:l. ¡uncnd al sevcral Icvels
Ihe Paleoccne a~lronomical calibralion
_HOS3
_HOS4
_HOS2
_HOS1
_HOSS
Mainforamlnlferal
events(Arenillas el aJ., 2008)
proposcd by Weslerhold el al. (2008) whichis bascd on differem gcochemical dala seIsfrom ODPIlODI) scdimcnls frum diffcrem
oceans and their own interpretalion and
atleml'l 10 correlale 10 Zumaia. In IUrn.Dinares-Turcll el al. (2010) refine Ihe IOp
posilion of Chron C27n (C27n...,,) by integl"oI1ing new magnelo
straligl"oIphic dala frum Zumaia and lhe Ojala scclion in Bulgaria.C27n,.. is now placed four precession ~'ycles abm e lhe posilionoriginally reponed in Dinartli-Turell cl al. (2003). Dinarts-Turcll et
al. (2010) also rea~~ess lhe a~lronomical luning of Ihe Danian·Scl,lfldlan lnmsiliunal imerval in lhe liglll (lf lhe exprcssion uf Ihe405-kyr ~'Ccentricily cyclc bolh in Ihe hll1d-b:1SCd scclions and for
IODP Sile 1262. They provide a consislenl corrclalion of lhevarioll~ d:lla seIs thal challenge the prcvious inlerprclalion ofWeslerhold el al. (2008). A1> for the posilion of the basal Sclandian
GSSP at Zumaia il is kx:aled 30 I'recession cycles aboye C27n"", (ca.630 kyr) and can be a....~igncd an age of 61.641 ±O.o·m Ma un Ihe
La04 aslrunomicallargcl Solulion (scc Dinarh-Turcll el al. 2010. forfurther dClails).
'5
-15
.,.
Red Mari
greymarlstones
-5
straliliedmember
GSSP--Om
AitzgorrilimestoneFormation(Danian)
ItzurunFormation
(Selandian)
ZUMAIA SECTION
C27r
C26r
JXlOr radiui~olOllic agc control in the Paleocene in addilion lOuoccnainlies in lhe absolulc numerical age of lhe monilor slandafds
u'\Cd for lhe radioisOIopic daling mcthods (Kuiper el al. 2008).J-1ov.c\'er. aslronomicalluning bascd on lhe slable4(}.¡-kyreccenlricity
eycle b apl'ropriatc (WcMcrhold el al. 2008) :md should be Ihe finitorder apl'roach lO rc;lch <1 consiSlenl P,llcoccnc luncd chronology.Ahhollgh precise orbilal solutions fOl" ~horlcr cycles are lacking. a
~lIilable approach is lO eslablish an imegralcd rnagnCIO!olmtigraphicand orbital Iy charnclcri7.t.'d tcmlllalc (i .C. e)'cle-dul"oIlion estimalcs an<!
main phase relalionshiJK) in a gh·en SUCCCSSloll. E\en if dcfioilivcluning to ao orbital solution (an<! Ihcrefore "absoIUlc" age eslimales)1ll;ly be provisional. lhe lime duration and role of I'roces~es (i.e.
biologicaL p.1lcuclimmic ClC.) <lre rcadily cXlrilcted. MOTCover. lhepolclItial for 1,;10001 corrclaliOll i~ amply faÓlilaled.
Figllre 9. Ihtai/~d 1il11OIogicnllognaos! I¡'~ D(",inll·~/nlfdi11l1lronsition oft¡'~ Zmnaia s«IiOll14'¡¡1I positioll of rtft'rt1u:~ 'IOriZOllS IIDSJ lo IIDS5 (Ar~Il;lIa.t ~t al. 1(08). T"~se 'IOrizoft$ ared¡scllss~d ;1/ t¡'~ maill text (lIId SllOl4'lI il/ Fig. S. SlIrface JlJJS4 corrt'sp(mds /0 tllt bus~ of t"~Se/al/dial/. A!agl1clostrmi¡:rl1flJiy from JJinare.f·1ilrc/J et fI/. (2tJ03).
On-rmbrr 2011
129
BASIN SLOPE PLATFORM PLATFORMMARGIN INTERIOR
Zumaia Ermua Unanu liZa.aga Korresf f f f -,/'-
E P6a I,L-21 ~ ~SBZ.
O lLER- NP10 SBZ5e OtAN 24,
1I'L-11._.- ...._..
T P5IT~-21 SBZ4
H NP9ANE E 1- ~
T u. UJI ~
I c:_.
SBZ3A ::l ~
N ~ • ~ -::l .s::; tip
j 1::: 1-
A..Vl YkY YkY
L SElAN- TY TYCVoN NP5 1-
E UJ!'~~ 26, -'
O
re ~ ~
P3aE E
~ ~
N u. Da-2 ~
E o J!l ~ SBZ2A E
~
P1cN ...JI .¡:A ~
$N o ~
Ol ~
l:JP1b . r ~
~ ,,-,•••
IMa~DalSBZ1-....... ......... 29r ........... .............. . .........................
e MR , AE t A tT e S. t
1t DEPOSITIONAL SEQUENCES tL1THOSTRATIGRAPHY Shallow Benthic
Zonesmagnetostratigraphy I l:eófcalcareous nannofossils HIATUS
I I KIPplanktic foraminifers bowd¡,ry dIIy
Shallow marine deposits
eulochlonous
~ (hemi)pelagicliiiiiiiI IImeatones_
marls&marlstone
[ .... lreefa'oonstructions
lYfiIí deepL.rr..J karstificatlon
~ paleosoits
niouter platform limestonesc.::IJ ("shoals· & bioclastic accumulations)
¡¡:r:::::;q inner platform Iimestone/dolostonese:a (tagoon & tidal flals)
F""""'l snallow marine siliciclasticsL..J (beach. delta and open platform)
Slope and basín deposits
resedimented
~ síliciclastict==J turbiditesr---I calcareous~ turbidites1.,...1oonglomerates
3. breccias
Figure 10. B;oc//rfJllostrotigrop1lit;. lromU'ork 01 the PoJeoctllt to 1014'tr )j:m·s;olf (rtgio/lol JltrdiDlI) )'IlI;'USSiOll 01 the SW Pyrtlltes,sllol4';ng dtpositio/laf sequellcn and ma;" facits, Age datillg of tlle sequellcn based 0/1 plat/orm margil/. sJope alld basil/al stc!ialls, Far
{ocotiol' 01rtftrtnu SUljons. set Fig. J. Modifitd from BaUla ~I o/. (2J)()4).
]JO
Cllrboll isotope strlltigmphy
A detaile<! carbon iSOlOpe slraligraphy has becn established
lhrough lhe cmire PalL'otenc scction al Zumaia bascd on bull rocl...amples (Schmill. el al. 1997a, 1998). Thi, i~opic rerord show'i
lhe samc gencr.d a"c lrcnd as rerords measun.'d in .....ell-presel"\'e<!
ocoe¡>-.'>Ca malerial. such a.<¡ al o...'Cp Sea Drilling l>rojeet Silo.' 577. Thechar.lclcrislic global l"le Pakoccnc auc maximulIl (Corfield 1994:
WC'lerhold el :11. 2()11) is ""'0.'11 rcpre.'iClI1cd al Zunmia. Two m:tior andlWo minor negalivc al lC shirls are rcgislcred. '11C lWO rmtior ~hifls
(> l'ir,) are siwatcd ni lhe CrewccousWalcogene and Paleocencl
Eocenc OOund:lrics. The 1.....0 ll1inor shifls « 1'ifd are localed ncar IhcIOp of lhe Aill.gorri Limcslonc FOmla[ion and in lhe basal Ill.uRlIlFormalion.1llc fir-;t t.....o anomalies ha\'c also been fouOO in m:my
other scctions orld\\ ide, whereas il has becn generally diffieuh lOreproduce lhe [ 0 other anom:lIies dsev.here. For example. lhe
conlinuous mid·Paloocenc record al Deep Sea Drilling Projecl SilC384 in lhe north""~1 Atlanlic (Berggren el al. 2000) does not show aelear negative allc spike similar lO lhe one obscr...ed by Schmil" elal. (1997... I99K) al the base of the Selandinn :11 Zumaia. Al boIh
loculilies. howe\lcr. Ihe inO..-..:lion poim of lhe iocrcase in aPc lhatellelllu:llly cu!min:llcs in lhe unusually high ól'C lI:llues during lhe
long-lenn lale P:llcocene Ól'C maximum. occurs IICry close lO lheboundary bclween calcareous nannofossil zoncs NP4 :lnd NP5. ThisfC:llUre can ¡¡pparenlly be uscd iU lCllSI for fir.;l-order corrcl:llions
bel\\'ccn differenl sile~. We!>lerhold elul. (2011) in a carboll iSOlopcfC(.'ürd forllle Palcoccne fmm Ihe cclllrall'acific, shuw sm.all ncglllivc
anomalic.~ Ihul may c~poOO lO lhe smallcr anomalies al Zumaia,1be shon-lenn negmi\e spike in a r'c althe base oflhe Sclandian
al Zumaia mayal le:I!>1 ¡X1I11y be relaled lO IOClll fealures 3!osociale<!wilh lhe prominclll sea-lC\'cI fall at Ihis c\'cnl (see laler scclion). 11 is
clear tllal in surface waters ihere is a grndicnllowards more negalin~
al'c values landward bI,o(:ause of an incre;tsing comribUlion of lao<l
deri\ixl organic dclnlUs. A.'>Ca-lcvel fall may ha\'e shiflOO lhe t.'OOsllilledosel' lo Zumaia. 1ñc small (ca. Q,7'1r.) ncgali\'c óflC :momaly of,hoft dUrJlion lhal occurs al ca. 10 m bclow Ihc base of lhc Ilzunm
Fonn;llion (Schmitz el ¡jI. 1997a). in lhe lowcr I)llrl of Chron C26r:lIld al HDS2 in Figs. 5 alld 9. may be corrclaled lo lhe Latesl Daniiln
Evcnl as obsen·t.-d in EgYPl (Bomemann el al. 2009: Sprong el al.2(09) :lnd the Indi,rn Occ:m (Quillévéré el al. 2002: Bomcmann Clal. 2009).
Seqllellt:e straligrapllJ
1ñe dce¡>-walcr Zumaia emDa)ment wa.~ bordcrcd by shatlo",,waler arcas in v.hich a 3(X).-SOO m Ihick carbonale M.lcrcs.~ion was
formed by the \·enical slad.:ing of conSl.."Culi\e carbonale plalfonm(Fig. 3). Dc\dopmCnl of Ihis carbonate slIccession was puoclllaled
by !>Ca-Ievel lowcring.\ or al leu~l regional cXlent. during ""'hich lheplmfonll IOp was I>uh¡¡criully exlXJSed. plnlform growlh (·ca..;cd andeXlensivc discominuily surfaces werc cn::lled (Ihcela 1996: Bacela
el al. 200 l. 2007). During lhe Paleocelle-early Ypresian interv,ll sixI,uch drops h,l\lc bccn idenlili..-d. Ihe inherenl disconlinuilies llallingbccn u-.ed 10 ~ulxIillidc lhe SlICcc.<¡sion into dcposilional M:quen(:cs.
codcd according lO lheir age (Fig. 10: Pujahe el al. 2000: Bacela elal. 200... 2007). Thc mosl prominem of lhcse discominuilics. lhe so""31100 Mid-PaICOt.ocne UnconformilY (Bacela cl al. 2001), marks lhe
base of lhe Se/lñ-I l>ctJuence. h was crealoo dllnng a long-Ia."'ingpcriod of 10\\ sea lc\"C1 (of ca_ 2.5 1l.lyr acoording 10 bioslraligraphic
conslrainls. sce Bacela el al. 2005) lhal Inggcrcd large cl\»ional
collapses oflhe uppcr Danian slopcs aOO shclf margins aOO pronlpledlhe deep karo¡lirlCalÍon of lhe c'(poe.ed plalform carbonales acros.'( lhe""hule Pyrencan hasin margin (Baceta cl al. 2001. 2004. 2(07), TIlo.:basal Sclandian llerc rcpresenls Ihe corrclali\'e conformilY in lhebaJ.inal succesl>ion Oflhis major ullConfonnilY idcotilied in lheshallow
plalform areas. According lO .1 dctailcd .'ilrJligr.lphic reconslntetionof Ihe shelf margin arca cropping OUI in lhe Urbal>a-Andia platc:lU:lIla Ihrough lhe UM: of dcplh-indic:rling key focics bclow lrnd :roo\'e
Ihc Mid-Paleoccnc UnconrorrnilY il has been eSlim:ued lhm in lhePyrene,.n b,lsin lhe minilll:lI LJI,lgniwde lIf Ihe sea-Ie\'el fall of lhe
Danian-Selandian lrJnsilion was belwccn 80·90 m. The origin of lhispromincnl sea-b'c1 drop is still uoceT1ain bUI il mainly seems lO berelatoo lO a major Icctonic invcrsion across lhe inlerioroflhe Eumpcan
plale (Nicll>Cn el al. 2005), presumably lin"ed lO uplifl of lhe NonhAllanlic lilhosphere by the ke1and plume (White aOO I...o.....ell 1997).
The GSSP ror the Thanetian - position,stratigraphy and completeness
Precise posi(iol/
Thc hase of Ihe Th:lnclion Sl,¡gc. lhe Ihird or upper slagc in lhe
Paleocene Serie.s. is placed in lhe seclion al IlluRln Be:lCh in ZUlmLia:11 u level 2.8 III aoo\'c lhe base of Ihe core of lhe dislinCI clay.richinlef'\'al 3ssocialcd wilh lhe Mid-P:lleocene 8iOlic Evcnl (MPHE)(Figs. 11-15). 11.... base of lhe Thanelian oorresponds 10 lhe base of
magOClochron C26n (Le., C26rJC26n re\·crsall in !he scclion (DinaresTurell el :11. 20(7). h also correspoods lO lhe 1c\el eighl pn:cession
cycles abO\e lhe oo.'Ie of the l"Ore of lhe MPBE (Figs. 11·15). :ln
c\'ent eharacterized by imporlanl cakareous nannofossil andrornminifcr asscmblagechanges (Bemaola el al. 2007: Din:lres-Turellet al. 2(07). l1lC base of ¡he Thallelian occurs ca. 29 m aoo"c lhe
base of lhe Selandian. and ca. 78 m aho\'c Ihe Cretat.'COU!JPaleogcnc
oound:iry.
Li(IIOS(mi ig raphy
The Illurun Fonnalion lhal sp:ln~ lhe entire Selandi:1lI :mdcontinues IIp Ihrough lhe lower Thanelian. shows highcr \eT1ical
varialion~ in boIh lhe rclali\'e proponion of hemipclagic sedimcnlSaOO ¡he amounl oflorbidile inlerealalioo!> l'Unlpared lO lhe undcrtyingAitzgoni LilllC!>IOOC Fonnalion (Baceta el al. 2006). Thc Io\\cr par!
of!he hl.uRln Fonnalion can be dh·ided in a 10wCf. ca. 24 111 thick.(infomlul) Mcmbcr A. and an upper. ca. 52 m lhick Membcr B (Fig.13). Membcr A is largely dominal..-d by mar[s. whereas Mcmlx.-r B
includes signifit.'anl proponion!> ofindurJlOO limeslone. Thc bouOO:lrybclwccn lhe two Illembcrs h3.'( bccn csl:lblishcd arbilrJrily allhe poilll
in which lirncslone bcds rcach lUId rnairn:lin CaCO] \'alues higherlhan 6O%.l1ii~ bound:lry is silualcd C:I. 6.5 m bclow lhe delined baseof lhe Thanelian. On a larger scale, IHembcrs A und 13 or Ihe lll.unm
Fonnalion rcconl a pmgrcssh'c increase in CaCO" after lhe :ibn.pldccreasc lhal Chal".lClcri1.cS lhe lowcr boundary or lhe ronnation. 'Tñe
CaCo, increaM: culrninales in lile upperpan of Membcr B .....ilh lIaluessimilar lO lhose of Ihe Aill.gorri Limel>IOne Formalion. Thecomposilion Oflhe limcstones in lhe It,..urun r-onnation is mlherl>imilarlO !hose in lhe underlying Aitzgorri Limcslone Formalion (mkritic
mud.~lone-w:lCl~loncwilh plan"looic for:ullinifera). bul occasionally
lJl
f"igl/re JI. "osit;oll of tlle bose of tlle TflOllr.tiall Slage 01 /tUlnlll Hr.ach. TI/e rdOliollship of Ihe
GSSP rdolil'r. to lI/oglle'oslraligraphy olld 1il1lOlogy;s empllOsi:J'd. Mogm'loslraligrapl,y occordil/glo O;'lOns·Tflrell et al. (2(}(}7).
pn.-dominalllly of silicicla1>lic nalUrc.
'" hercil.-~ in Mcmbcr B. whlch show, a
higher ntllubcr. (hcy are u'ually of
~ilicicla~lic 01" mixcd carbonalic·
,ilieiclaslic nalUre. Thc carbonale
grains mainl) COlTCSpond lO abr.KlcdteslS of planLlOnic foraminifera. Aboul
lhrce melcrs abo\e lhe limil bcly,een
the mcmbers A aOO B of the Itzurun
Form:alion. Ihc!\" il> a promincnl danca. I m thiek inlenal TC('or¡Jing a
drll,lic de~'rease in CaCO, :1111.1rel:uh'ely high \alues in tll<lgnclic
~u~ccplibility. This e1<lY inlcr\al i~
illlerpreled n~ lhe cxpre,sion of lhe
Mid·Palcoccne Simil: Evclll (Benlllola
el al. 2007).
Ca/C(II,(,oll,\' 1/{//lIlofossils
MPBE core
1
TIle ~(raligraphic internll spanning
lhe Sclandian Slage and the Sclandianl
Thancli:ln boundary i~ chameteril.c¡J
by u ~moolhly e\ohing succc"ion of
cakan.--ous nanoofossils (Figs. 13 and
ISI. similar 10 m:onJs in apparently
CJlpanded aOO eonlinuous 'llCCCS~ion"
ehewhere, "ueh al> in the deep M:a(Bernaola and Nuño-Arana 2006:
Din:u'Cs-Turell et al. 2007: 8emaola
el al. 2009), Closc to lhe boundary
bclwccn lIle bal>al 2.85 rn of red marl aOO (Ile o\'crlying grey marl
bcds (Membcr A) in lhe 100·\cr pan of lhe Ill.urun Formalion. oc'Cu.....
a slighl dccrease in 100al abundancc of eakarcous nannofossils. bol
no olher significanl change il> rccordcd. TIlC c;lIcan.--ou~ n;lI1nofo~~il
a,scmblage l1Cm~s lhe grey nmrl";[onel> (Member A) of lhe 11Iunm
Form:llion ¡,., ~irnilar lO llml foun¡J in ¡he Llndcrlying red marl and i~
I11llinly dOll1inaled by Co<:eulirIIllJ pel(j~iCIl.l", I'rillsills mlll'lillii, f~
C26n/C26r
1•
C25r/C26n
1i
lhey also contain minor amounts of ,ilHizcd qU:lnl. aOO gl:llIconile,
lhilo laller as sub-mm gmins and infillings of Ihe for.l.Ininifeml lesb
(Bllcel:1 el al. 2006).1lle lt7.urun Formalion rccords a progrcs1>ive
change from iIIile-rich lO il1ite/smeelite·rieh clays. Trace fossils.
dorninaled by 2ooph)'cO.f. are common, Thc ItI.UI\1Il Forlll<ltion differs
froll11hc Ail~gorri LimcslOlle Fonnmioll ;llso in lhe amOUlll and lypc
uf lurbidilc intercalalions. In lllc marly Member A (hcy are
"iXl/re 12. Posiliofl ofmagllewclmJIIs C26r, C2611 (///(/ C25r ill relfltiOlllo lilfw/og) i/l the '/meta ~'eclioll, II cO/J'I'lemellfMJ' referel/<'e sce/iu"
for fIIt1gl/f!I(J.~1rll1igrnp/'yUCr(J.\·,~ IlIc SclOlllfilll/-1'Jllllll!lioll IrnllsiliOIl. Maf,:lIc/(wrtlligrtl/llly f1CCO/'{!iIlf,: tu lJimtres·1ilrcll el 111, (2007).
1:."',i.~()(JI'.' Vol. J4. ,ro. 4
2Jl
Plo"klOIl;C foram;llifera
kle¡III't'IIi, 8oll/o/iIl/l1,'i COIlicll,f alld Di.\T/J/I.\'ll'r
bml/llellei. al110ng Olhers are also recorued(lkmaola and Nuño-Arnna 2006). 1l1c baseor Zone NPó. nl:Jrked by Ihe FO of lf.
klt';"pt'1Ii occu~ ca. 22 m abO\e lhe base oflhe Selandian Stagc and ca. 6.5 ni belo..... lhebases of Chron C26n :md lhe Thanelian Slagc(Dinares·Turell el al. 2007).
NP5
NP7
NP6
NP4
NP8
1--
1--
1--
P4
P3a
(e) (d) (e)
."2 P3b'"..J
f-'"
No significan! ehangc in lhe planklonicfor.uniniferal 'Iswcialion has bt."'Cn obscrved:Icross Ihe b;lse of Ihe Thaneli;lll slage.Ho.....el·cr. al Ihe onsel of Ihc Mid-PalcoceneBiOl:ic E\'(~nl. 2.8 m below Ihe base of lheThanelian. Ihere is a dC{;rease in bolh lheproportion of Ihe planklonic [oraminiferarcblh'c lO Ihe lolal fornminifern asscmbl:lgc(pl:mlaonic + bcmhic) and in lhe nUl11bcr 01'planklonic spccies. Al lhe gencric Je"ellhcreis an increase in the proponion or /g(}rino. anda dccrcase in !he relali\'e abundanccorall OIhcr!'>pcl·ies. 1ñc lo .....esl fl.'lalh'c propon ion ofplanklOnie fonllllinifcra ¡lIld Ihc minimumnumbcr of spccies occur in lhe uppcr p:1rt oflhe Mid-Paleocenc Biolic Evcnl inlcrval."here mosl oflhe spccimens prescrvcd belonglO lhc S,lbbmi,w genus. Thcs<: l-hangc~.
howcvcr. were Ir.msienl. a.. a relum lO lheeonl!ilion.. lhal prev:Jilcd before lhe MidP"It.'OCcne Biolic Evcnl is obscrved aboye lhcevenl. A nOliccable decrease in Ihc proportionof morozovcllids across lhe Danian1Selandianbuundary. frum 20-25'l of lhe lolala,'ltCmblage in lhe Danian samplcs. 10 1(Yl, Of
les~ in lhe ScI:lIldian ~mllples .....a.. reponcd byOrue-Elxebarria cl al. (2007b: 2010). OrucElxcbarria Cl al. (2010) funhcr documcmcd:lIlrogresshe bUI syslcmalie ehllnge in lheeoiling direetion of MtJro:'QI'~1I0 ocdustl.
whieh evoh'es from having approxim:ucly50% sini~tr;Jl ..nd dcxlr,¡1 individuals in Dani;lllsamples lO bccoming progressivcly domimlledby a dexlral populalion i!llhe lowcr fcw loclc!"of the Selandian succC'.ssion. so Ihal 10 mabo,·c lhe base of lhe llzuron Fonnalion ca.80% of lhe les!.'> show a predominanl deXIr:lIcoiling. The FO of I,lIl1ril1a allw/lri. m¡lrker ofZone P3b by Bcrggrcn and Pearson (2005).
occun. e:l. 10 m :Jbo\'c Ihc base of lhe h:zurnn Fonnalion (Fig. 13)
according lO Arenillas and Malina (2000) and Orue-Etxebarria CI al.(2007a). The lowcrboundary oflhe Zone N by Ikrggren and Pcaf"<OO(2005). markcd by lhe FOof GIQ/)a,IOllll,fil,(j p~elld(}/II~Iltmlii.lXcurs
c.,. 16 m aboYe lhe base of lhc It/urun FOrtll:llion aecording lO OmeElxcbalTia el al. (2oo7a). Inlhe loVo'cr pan 01' lhe Zone 1'4 lllere i":lnincrease in planklonic forJminifera din:rsilY. e..pccially in acarininidsand globanorna1inids. Arenillas and Molin., (2000) ~uggeslcd lhallhe luwer boundary or!he Zone P-I •Of ÚJterbtlCh~ri(jpSf'lldOlIlt'l1tmlii
C27n
C26n
(b)
~
."NU
~
<DNU
(a)
-e: __ l H. ridielli
" pusilfa~S.primus
.--.J /. e/beari
...-J M. velascoensisM. occJusa
......-J F. tympaniformis
~ N. perfectus
"
."
40 ;1
""1=""'=
.10 1fI
l'm
E-cycle ---,
"m
'll G/. pseudomenardii
" 1---'- +-'15~
~~ 1'='T-."mClllbcr A 31
"00-
"¡¡ f--;:'--
'""s::!J...--••.•• --- ·unxl mar! :üGSSpom~
"
:zs~
"'--_..._---~'"
20~..,
AitzgorriFonnalion
ItzunmFOnnalion
r-/
M. engulata
Hgun /J. lmegrotetf IitllOstrotigrapIJJ'. bioslrotigrop¡'y a"d lIIaglltlostratigrapllY oflhe ",id·Po/tocellt! ollht Zumaia su,ion. (A) lIIai" calcaruJIIs planklolf bjtn¡"ellts. (8) Magllttic:polarit)' stratigraphy. (e) PIÚllktOllit: fOMl1li/lifero bitr.•OIlQtioll. (D) Hio:tJllolil", of Buggrtllel ul. (/995). (E) Ca/cureoas "al/llOfo.~si/ biozlll/{ltioll. Bioslratigrapllic tl'tJllIJ represellf ftrstQCCllrrCllce.f. "rQlII IJflreta el (/1. (1006) al/d IJillflre.f·Tllrell el al. (2007).
hif{'/Il1u lUid TlJlrriu.1 fi'rrlu.olS. 1be mosl importanl change in Ihel'alcareou~ nannoros.~il assembla!,!cs 3CnKS lhe A and B nlcmbers oflhe hzurnn Formation i... lhe occurrencc and di\'c~ificalion or lIJegenus Hrfio/itlm.1 and lhe (irsl Ol,:l;urrenct' of Ihe genus Di.'icooster.
onc of lhe nllJsl importanl ca1carcous nannofossil grou]l" providingnumcrous bio~lnlligml)hic l11:Jrkers Ihroughoullhe Paleogenc. Acrosslhe uppcr A and l<Mer B I'1'leIllDeN of lhe h/urun r"OfTllalion Ihe r"Ús
or Coromx:"c1I1.1 nile.1crfl.1. Zrgooiscus brmnll'fft'i. TUlI'riln emillens,
lfrliolitll1u clmll,brillr. Spllenolillllu onorrtJl1/lS. Heli"fillws
f)er"m}¡a 2UII
133
Zumaia-Itzurun section Ibaeta section
Inclination
·90 O 90(degrees)
•NO
l'r"
'.
1 ;
• .
lN....
•NO
'" ""(degrees)
lITHOlOGY
l~imCSlone!urbidite
Declinalion
.-r;;-'¡.. u ...... - -'1
6ll'~.,~
7,;;"...........-::"'66 t:.n.......- _ $--'
" '..... GSSP --:" J ••: M
.:¡; 6J_____ .:~ 61
n)~
;-~.
· .. · ..... ····7¡j~
n .
E-eycle '.4" .4)::'
"
Inclinalionu. TU.,"" I~ U.....
•
•:» :: ::::,¡ . :.
• I" ,J¡ .:llll~
'U 'Vu,
•
".~.
•""""" ~..."" •" o."•k.f•, ,• ,,•,•,
'N ..... GSSP
·90 , 90(degrees) (degrees)
"
.~
• samples
Declination
"'""'""
"
"""""
"E;F="'¡;;;;¡-
70~
"".~~
6ll~~
67,1-
•66 7C_Ir65 j=.--,-
M
Figure 14. Dedillalioll alld ¡/ldillalioll of lile dwmelCristie remUl/e"t II/agl/etiu¡tioll (ChRM) eIJlllfJ(JIIe"t.~ al/d JilJlOlugie lug.l' fur Ihe
Zlllllaia-flzurllII (/lId Ibaeta seeliol/s. Ded;/Il/t;uII.IIor the ZUII/ail/ seelifm IWI'e been IlIIrolated b)' lO". Opell eirele:> dellole llllre!iable dalaalld eroue.~ mark lile f}fJ.~ilioll of wllll/Jfes II/(/t ¡¡nJl'ided /10 dala. The PO:>i/;OIl of bOl/¡ GSSl's, of CllrulI C1611 allll tOrrelMiol/ bel'Weell lile:>ect;IJ/I.~ l/re SIIllIl'II. MI'UE deuotes lile Mid-I'u/coec/le lJiolic Erenl (lJerl/l/ola el (If. 1006) l/mi da.~IIedUnes eorrelale SOl/U! (U.I·tillct rclatil'ely
ll¡iek carbo/late beds. NUlllberil/g oflile eccelltricity (110 kyr) re/ated E·e)'clesfo//oM's Ilumberillg for IIl/(lerlyillg Slmla/ltal slarls abol'e lileCreluceoll.I·!I'aletJgelle bmllldary a.~ reportel/ by Dillares-Tllre/l el al. (1003). N/lmberillg of 'he carbol/(lIe layers frol/l lile Jm.l'le col/pfels orIJrece.I·.I'iml I'-cycles arbitmrily sWrl~' lit tite MPlJE el'c/u (jrulII /JillarC,~-Tllre/l el n/. 1010, .I·/iglilfy IIIQ(fijic(I).
Epis/K/O' \',,/. 3-1. "0.-1
234
D. multiradiatus
C26n
~A. soldadoensis
; F3
~mJ H. riedelli
ID]
1El~
C25n
67 ~.e;;;;;;;;;;~
~~I¡==-----ESSP66 .165
64
73
72
71
81
?80
?79
?78
?- m-77 ..!
?-~.~~76 ~
? - w-'-]¡¡¡¡¡¡¡¡75 _, .:- d3~'
74
l25~-'70 ;
?
~
'"NU
i ..
C26n
~ H. kleinpel/i
~ l. albeari
_ MPBE
...-J F. tympaniformis
lIlE GSSP 2nd radiationi .... of FasciculithusLeO Braarudosphaera
~ N. pertee/us
G/. pseudomenardii
~
]1m
nKllre 15, MaglleuJslraligrap/¡J', lIIai" lIiQslraligrapllie CI'CIIIS, lil/IO/ogy olld C)'cffJ,~traligrafJllyocros,~ lile mid'/'ll/eocelle ill lile Zml/llia
.veclillll. MI'UF: flelloles tlle Mid·/'u/eoce"e Bia/;c El'elll. Nf//llherillg oItlle eccell/riÓ/y (cu. l/O k)'r) refflled E-C)'c1e,\1o/loll's I/II/11beriugIor
IlIIf/er/)'illg ~'tm/ll t/IlII.I'/lIm· abol'e lile Crelaceomll'aleflgelle btllllldllry, relJOrled by f);ulIres-1itre1l ellll. (2003). Nlllllbcrillg o/tlle cllrbuml/e
Ill)'er~' Imm lile bus;c c(JllfJlel,~ 01 precessioll P.C)'c1es urbilrori/)' slart~· al/hc MPIJE. Uioslmtigmpllic el'ems represelll first OCCl/rrel/ce.\·
(FO~'J, Qtlierwise IlIey are illdieatelf m; fir~'t eOII1lIIf)1I (¡cel/rreuces (FCOs),firsl rare oeel/rrellce (FRo.~) Ilr /1l.1't COJIIIIIOII oeCllrrellces (LeOs).
From Dillllres·1ilref/ el al. (2007).
1Je<'t'mlH'f 201/
Znoe of Arenillas aOO Molina (1997) - shoukl be placcd close lO lhe
C26r1C26n boundary al l'.umaia.
Magneto- afUl cydosrratigraphy
Thc precise pOSilioll and dur:llion of Chron C26n has been
eSlablished by delailed p:lll'Ol1lugnetic work in lhe ZUl11aia seclion.und confirnlcd by complemcnt:lry work in lhe Ile:lrby lbacla seclion(Figs. 11-15) toinares-Turell el al. 2(07). The magneloslraligrJphy
ha~ been linlt.'t.!IO delaile<! cycloslraligraphy providing an cxcellcnlAS!f()flOmical Polarily Time Seale. The cyde..tfuralion ~Iimales for
Ihe mid-Paleoccne crilical chronozones whcre Ihe SclandianThanelian lran~ilion oceUD are as follows: C26r (133 precessionC)'cles. 2793 kyr), C26n (11 prcccssion cycles, 231 tyr) aOO C25r
(69 prece.<¡sion cycles, 1449 kyrl, The base 01' lhe Th:melian SllIgc is
105 Im:ees~ion cycles above lhe b.1se 01' lhe Sehllldian Stage, whichindicales a lol¡i1 dllralion 01' 21 03 kyr 1'01' lhe Selandian Slage, Thercis no dislincl lilhological ch:lnge (e.g., in carbonate col11em orlurbidile
abundancc) or nOliceablc biologic,ll change in connCClion Wilh lheChron C26rlC26n re\'crsal. bullhe Ie\'d can be localoo and OO~I:lI(,-d
toolhcr basin~by refeTCIlCC lO lhe distincl Mid·P'Jlcoccne BiOlic E\'cnl(sec belo",,),
Cm'bon isotope sIrarigraphy
The b..1!>C ofChron C26roccurs in abollllhc middle oflhe imerval
wherc whule-roek I)"C values gradually increase lowartls l11axilll\llllvullles in the I:lte P¡¡k-ocenc. 11lere i,s no I)I'C annmaly as~ocialcd
wilh lhe b:lllC 01' Ihe Thanelian. In lhe clayey interval corrcspondin,g
lO lhe Mid-Palctx-cnc BiOlic Evenl. in addilion 10 a JO<.i. dttrcase incarbonale conlenl. a 1'1. negali\'c ólJC shifl is rcpont.'t.! by Bcmaola
el al. (2007). howc\cr. such iSOlnpie shiflS asS(x.-ialed wilh a ehangc
fmm limcslone lO mar! may not ncc~ly ref1ee1 originallrcOOs.lKx-ause diagelk:lic mincrab can fonn in thc sof! marls (Sehmilz el al.1997a). In lhe Zumaia scclion rcliable iSOlopic re.~uh;, can primanly
be rclriC\'OO from Ihe lime.~tonc bl.--ds. The...e bcd~ werc lilhified dllringeMly diagcnc,i, which rcslrictcd lhe eltclmnge of iSOlOpcS withpcrcolaling pore wlllers.
Seqllence srmrigraphy
According lO gcncrJI and dt..1ailed com.-Ialions carried out bcIwcen
basinaL slope and platform successions in thc wC"lcm Pyrencan basin(Bacela 1996: Pl.Ijalte el al. 1998a.b: Baceta el al. 2Ol).f, 20(5). lheTh11lClian GSSP occurs wilhin lhe IrJns~hc sy~lcms lrael (TST)
of depo~ilional sequcnee Scffh-l (Fig. 10). This ~yslems lmcl isrnarked al platfornl margin sellLngS by lhe onlap of shallow marine
uppcr Selandian :IIlU Thanclian ,'Irala onto lhe renwrkable Mid·Pale<x:ene Uncnnfonnily c:lpping lhe shclf Danian carbonale.s, lhu,n:cording Ihe progrcssivc marine re-nooding of lhe extensh'e 11:\110Ppcd Danian plalforms afler Ihc sea-Ievel drop al lhe Dani:m·Selandian lransilion (Pujalte el al. 1998a: 2000). This regional
renooding JlfOCOS i, rn'Ol'dcd in lhe ba~inal 'lICces~ionoflhe IlzunmNlrmalion by a progres;,i\e bul relalhely rapld \·CTtic-JI increase in
lhe calcite conlenl of bolh limcslones and marls. lhe apparilion andiocrease 01' aUlhigenic glaut.-onile.inlilled forJllIiniferJllesls :md lhe
apparilion of ca1caJ1,,'Ou~lurbidiles etllllaining plalfonll-derived fossils;j('ross lhe 10 Illlhick illlerv:t1lhal in lhc Zumaia scclion encompasses
lhe Mitl·Palcocene Bel1lhic Evem (see below) and lhe magnelochron
""¡Hwtks \iN. J4, ¡¡(J. 4
2Jj
C26n (Bacela 1996: Pujahe et al. 1998a,b: Bacela el al. 2006). Similar
fealUres are recorded in lhe ncarb)' lb3cta scclion. near S¡m Sebaslian,and in Iypical base-of-slopc sections such as Ennua (Bacela 1996). a
facl reneeling Ihe direcl innuence of lhe sca-Ievel signalurc ondeposilional proecsscs l:Iking place across Ihe Pyrenean baJoin,
Relatioll ro Mid-Paleocene Biotic Eve1lr
A fe"" melcrs bclow lhe base of Chron C26n a global !>hon·livede\'enl of e\Olulionary ;,ignificarx:c is recordoo aOO possibly relaled lOa hyperthemml evenl (Fig. 11) (Bernaola el al. 2(07). This :>o callcd
Mid-Paleocene BiOlic E\'enl is rcprcsc:nled al l'.umaia by a dislincl
c1ay-rich intcl"'a1 charJCleril.ed by imponan! calcarcous nannofossiland forarninifer as~lllbla,ge change.<¡. Thi~ inlcrval. which is alsocharaelcrized by a si};nificanl drOIl in carbonale conlclll and a
pronollllce<1 peak in Ilmgnclic susceptibiJity, is localed ca. 4.5 111 abtwelhe first occurrencc 01' N. kll'ill/Jelli.lhe IllMker spccics ofZollc NP6,and w¡¡hin lhe planklOnie foraminifera Zone 1'4. Thi!> is al a
slrati};rJphic Ie\'el equivalenllO lhe red day layeroflhe Mid·PalcocencBiotic E\'em foond al Shalsky Risc in Ihe Central Pacific and WalvisRidge in lhe Soulh AlIanlic (Bralowerel al. 2002: Zachos el al. 2()().¡).
Al Zumaia lhe calcarcous nannofos<¡il. planllonic and bcnthicfornminifcra experienccd a rapid and ren\arkabJc lransfonnalion(Bcrnaola el al. 20(7). Calcarcous nannofossil a~scmbla};c chan};es
suggest a shift from rclali\'cly cool mcsolrophic lO warmer, more
oligolrophic condilions. Al lhc sea noor, lhc di\'crsilY of bcnlhicforal11inifcral assembluges, and lhe pcrccnlagc 01' buliminids :md of
cllifalln:r1 !>uspcnsion feedcrs decreased. whereas low food untlopporlUnislic laxa (c.g. rr"r,ropJ¡rllg/lloi(/es. Karreflllil/(I ¡¡nd
Rt'{'lln'oirli's) show quantilati\'t.' peak!> al the day.rich la)'er. These
faunal chan};cs are ~imilar 10 lhose reponed ffOm othcr carly Eocencdccp--waler dislUrbcd en\ ironments during h)"lX'nhennal eplsodcs......hich possibly affected mctabolic rales of dccp--sea fauna.s (Thotnas
2(05). Thc eaJcarcous nannofo~sil antl planllonic foraminiferalIUmO\CD !>laned carlier lhan lhe bcnthic foraminiferal ch:lIlges,
indicatin,g Ilml Ihe environmenlal change al lhe sea noor occurrcdafter lhe changes il1 Ihe surface wa!ers, This p¡lllCm is consistenl wilha lop-doWIl w:lrIlling of lhe ot.-can, and i~ ~imilar lO th:ll repol1ed by
BrJlowcr el al. (2002) for lhe PalcOt.-cnclEocene Ihenoal ma.~imum.
The ""lid·Palcoccne BiOlic Evem was shorl·li\'ed: according lOpreccs.<¡ion cycles lhe e\cnlla.<¡led for ca. 52-53 kyr, wjlh lhe {'OA: of
lhe c\'ent rc~nling ca. 10-11 kyr (Bernaola el al. 2001).
Correlation to the historical stralotypeareasBase of Selol1diol/
In al! OUICrop sccliollS in Dcnmarl, lhe hislorical lypc region forlhe ScI:mdi:m Slage. lhe DanianlSelandian boundary is marlcd by :In
uneonformilY wilh a variable number of biozoocs mbsing {8eq!gren1971: Thomsen and Hcilmann·Clauscn 1985: sce funher re\'iew inCJcmmenscn 0100 lltomscn 20051. 11 hM lherefore becn dilTlCuh lOdelcnnine lhe exaet biostmligraphic po!>ilion of lhe hislorical Danianl
SelaOOian boundary. Thcsc difficu1ties are e~acerbalcd by lhe faet
lhallhc relevam index f""si" uo;OO in internalional zonation schemcsare mre 01' lIb!>l:nl in lhe Nonh Sea Basin (lJcq!gren 1971: Percho
Nielscn 1979: King 1989: Thomscn alld 1-lcillllann-C1auo,cll 1985:Varol 1(89), The b:lsal Selantli:m is genemlly corrcl:tlcd wilh
116
plankltlllic for.lIuinifcra Zonc P3¡1. while lhe uppcrmOSl D¡¡nian is
rcferred lO lOnes Pie or 1'2. TIlC!<oC l'Orrclations are primarily based(Xl a sin.@le(lC("urrence of lhe planklonie fOr.Iminifcl1l Mom:tJI·t'I/(1
(lIlglll(lf(l. irKlcx f05$il of Zone P3a. in lhe SelaOOian :11 Copcnhólgen
(Hanscn 1968). ¡md on lhe presente of G/obocOlIll.m (/(mbjergell.\¡.f
in lhe uppcrrn()~l Dunian ul 1l1()~t oollndary IOC:llities. The highesloceurrcncc of G (itmbjt'rgt'lI.fis is widely 1I ....-d lO ¡¡pproximale lhe 10p
of Zone Pk (Obson el al. 1999). Bcrggren el al. (1995. 2000)prollO"'---U lo place lhe Danial1lSclaOOian bouOOary (arbilrarily) allhe
P2IP3lonul bollndary eom:laling. approximulely, wilh lhe milldle oflhe Cale¡lrcous n¡l1\nofos~il Zonc NP4 and wilh the base of Chron
C26r.A~ predieted by Bermlren (1971). youngcr I>.lf1ian dcposils which
narrow the slrilligr.Jphie gap in lhe suñace exposurcs are prcsenl in
lhe subsurfaee of lhe D¡mish Basin. With lhe f\."<:(jvcry of moreeonlinuous drill cnrcs, ineluding ~Olne from lhe SlOreba:1t arca, a
gr.ldu:lt and eomplele sucl·cssion oflhc Danian·Selandian lmnsiliuneould be studied in greal delail, Thc sueeession of cakarcousnannofossils in Ihcse cores. and panicularly Ihe appcar.mee of
Nt'Q('IIifls/o::.ygIlJ /Jt'rft'CIIIS clase lO lhe boondary. indicales lhal lheDani¡ll1 lO Setandi¡1ll c1mngc from limestonc lO CI¡IY oceurs in lhe
upper pan llfZllllC NP4. c10se lO lhe NP4/NP5 boundary Cl1lOmSCIland Hcilmann·C1ausen 1985;nlOlll~n 1994; von Sulis Pcrch-Nicbcn
1994; Clemmensen :ll1d Tholllscn 20(5). Aeeording 10 Berggrcll el
al. (1995) lhe NN/NP5 boundary is silualed in Ihe lower part 01'planklonic foraminifcrJ ZOne P3b, ~uggesling lhallhc uppemlOSl part
of lhe Danian dcposilS in lhe Sloreb:eh cores should be referrcd lO
7..om: P3a. This agn:cs weU wilh magnclOslr.Jligr.Jpl1ie swdics of lhe
Slorcb:clt eorc 8604A showing lhallhc D:llIi¡ll1/Sclnndian ooundaryoccurs a short diSlancc up in Chron C26r (Ali el al. 199-1).
Thc dclailcd sequencc ofC'Jlcarcous nanoofossil al>pcarJoccs aOOlhe magnelochronology al Zumaiasuggest mal lhe lilhological changefrorn lhe Aillgorri Linle'\IOOC FormaliOll 10 lhe marls of thc ItzunmFonnation reneels lhe sarne p:11cogl'Ogr.lphie cvcnl lha! callscd lhefacies shift from Dunian lirnc.~lones lo Selandian gn:cnsands. daysand murl~ in Dcnmark. Sueh a rclalionship was firsl proposed by
Schmilz el al. (1998) who foond lhe ro of N. ~if«lIls in Zumaiac10se lO Ihe Aillgorri Limc5londlt.lUrun formalional boundary.
SubSCl:IUCnl m:lgneloslr.Jligr.tphic and bioslrnl igmphie sllldies refcrrcdlu alxwe givc fllrlhcr supporl for sucll a corrdalion (c.g.. Arcnillusand Molina 2000: Dinares-TlIrcll Cl al. 2003. 2007; Arenillas el al.
2Q08: Bcmaola el al. 2(09). This included a relocalion of lhe FO ofN. /}~rf~CIfjS lO ca. 3 m below Ihe AitJ;gorri LimestonelltlUrunforrnalional boundary (Fig. 16). Considering Ihe slrong regionalevidcn(;c for u .'>C:.-Icvcl f¡lll c10se lO Ihe NP4/NP5 bound¡¡ry ¡md in
lhe lower pm1 of magnclochron C26rbolh in Denm'lrk aOO the l3asque
Clemmensen & Thomsen, 2005 Bemaola et al. 2009 Rodriguez & Aubry, 2006
North Sea Zumaia
*
GSSP•
e ......
,,'¡--,
FD 1"F. tympan;fonnis
Qreiya
* O/S boundary accordingto previous studies
.. 12--_ ...,----"0 !.o/.._- -
26 bedding ,
couplets Feto r-,:;s. primus .~ ...-~'1 ""u-_.'" " ......
" ""__FO C. edentulus 2......
"'iiif 1st rad~tiono, (m) OJ.i"'""D
~ Fascicullthu$
(b)(a)
NTp9
EA B. bigelowii ~JAIS:
ss.••
FO N. perfectus NT....
/..;;' .........~
.".. ryNTp7b
FO C. edentulus
FigJlr~ '6. Biostroligropllic CDrTdot;Oll oll/¡e ZUIIIO;O tectioll ",'ji" Soul/¡ T~I/lyJ (Qr~i.)'o) alld l)o,,;sll secliolls. (o) Colcorrous 1IOI/IIOI0ssiJ
ZOIU,~ loUv""jllg lile bj('ZOllOlioll 01 1'arol (1989). 01111 (h) maglleIVSlri/ligrap"y aJier lJillaris·Tflrel1 ~t al. (1007). 111 Nvrtll Sta log:
(1)= Ilr}'vwII Limes/flllt', (1)= Ctl/Ú,'illite, (3)= Le/Jillgc GreclI.\·{wd, (4)= Kertemi//(Ie Mad, (5)= ""'be/II Farmotioll. "rolll Ilernoufi/ el tl/.(2009). 711t ptlfCUIIIOglIClic di/to fr,r Ihe Nort/¡ Sea be/vl\' lile 1'0 01 N. l)Crfcc.lus are 01/0"" qlltlfily allt/ ¡IIterprem/iolU' are I/l/cerloill,
region (Knm I994b: B¡¡Cela clal. 2007). "nd lhe facllhallhcsc regionsare on Ihc order of only 1500 km a¡X1f1 ¡¡Iung lhe nol1heaslern Allanli('margino makcs il likely lh:n lhe S:llllC cvelll has bccn rcgislcred.
TIICsc conclu~ions are further supportcd by a recenl sludy uf lhc
Bidan alld Loubieng oUlcrop scctions in A<luilaine in soulhwcSICrrlFranee (Slellrl)aul :md SZlr.1kos 2008). High-resolulion ea1careous
n:mnofossil and foraminiferal invesligalÍons oflhcse sCclions dcfincd<l limc calibraled ~cquencc of 47 bio-evellls wilhin lhe DanianScI;llIdian lnlll,iliun inlerval. The Dall;an/Sel;mdian ooundary. a~
originally defillcd in Dcllmar\.;. is cocv¡11 wilh Ihe lilholugie change
from limCSlOnc-dominalcd (Lasscubc Formalion) lO marly."CdimcnulIion (Lalapy Mcmber uf lhe POIll-Labau Formalion) in
soUlhwi.'Slern Aquilainc. This horizon is also eocv¡¡1 Wilh lhc AilzgorriLimcslOllcfllzurun f0rl11¡llional ooundary ¡ll ZUfllaia. The Dimi;lIIf
Selandian boundary in lhese areas is markcd by Ihe end of lhe :lemeof lhe nannofossil family Braarudosphaeraceac. possibly due lO lhedisruplion 01' frcsh walcr illnux rclmcd lO c1imatie ehanges (Steurbaul
amI S/.lrákus 2008: Bernaula el al. 20(9). Sludies of S<.."X:lions aerosslhe upper Dani:1Il and 10wer Sel¡lIldian in Bclgium indiclIle:l similar
>ea-Ievcl hi~lory in rclalion 10 bio,lmligraphy as in Dcnrnark and lheBay of Bisc¡lY rcgioll (Sleurb¡Ull ¡uld SZln¡ko~ 2008). TIle sea-leve!changes lhercfore arc cilher cU~lalie or relaled lO large-scale leClonic
evenls affccling lhe enlirc norlhweslern Europe. Cyc1o- andmagneloslmligmphic sludies oflhe Loubieng scrlion wilh corrcl:llions
lO ZlImaia have fllrther refincd lhe slmligraphic schcme aeross lheD¡¡nian-Sclalldian lmnsilioll (Dinarh-Turell el al. 2(10).
Base of Thalletitlfl
Corrclalion lo lhe hislorie:ll1Ype area is slraighlforward w;lh lhehclp of rnagncloSlmligmphy (base 01' Chroll C26n) aud calcareous
n:Jnnofossils (uppcrZone NP6) (Aubry 1')94: Hine 1')94: Knox 1994a:
Ali and Jolley 1996). TIle basal Thanelian in ilS original lype arcaand ils ellslem prulongalion in Belgiul1l. as wcll as al Zumaia and inshallow-waler sectiolls in lhe Pyrenecs retlcets a major lransgression.
mnsl likely rclaled lO lhe same euslalic or regional isoslalic eve!11(Knox 1994l1.b: Sleurbaul 1998: Puj¡¡11e el ¡ll, I998a.b. 2000).
Correlation lo lhe TelhysIn lhe soulhern TClhyan re;lIm (e.g. Egypl. Tunisia. l¡,m(1)
sedirnenlalion condilions in lhe early and middle Paleucenc arc \'ery
difTerent fromlhe weSlcm Europcan b:lsins. Seclions in Ihe soulhemTClhys over lhis irllcrval are lypic:JlIy eharaelerized by monolonOllSbrownish grey marls. One particular mid-Pa!cocenc evenl levcl.
represenled eilher by an uneOnf0rt11ilY (in severa! Tunisian sccions)oro as ¡l promincnl organic-rich,.bcd.laminalcd and rich in tish debris
(in several EgY]Jli.rn seelions). has been considered lo possiblyrepresem a Danian/Selandian boundary cvenl (SleurbaUl el al. 2000:Spcijer 2000. 2003: GuaSli el ;11. 2006: Van IUerbceck el al. 2007:
Obaidalla el al. 2009: Soliman and Obaidalla 2010). This leve! haspreviously bcen lhoughllO correspond lO lhe now dclined base of lheSe1:mdian al Zunmi¡¡ (e.g.. Spcijer 2003). bul recenl ca1carcousnannofossil and fomminifeml ~tudies ,how lhat lhis evenl is ca. 4()(}
600 kyr oldcr (Bcrnaola 2007: Slcurbaul and SZiriÍkos 2008: Sprongel al. 2(09) and is now lenlled lhe L;llesl Danian Event (Borncmannel al. 2(09). In lhe Qreiya scclion lhe organie-rich I¡¡yer OC('urs
appro:"¡lIHllcly 1 m lIbove lhe FOs 01' C. ('ll('IlW/I/S ¡¡lid lhe smallfasciclllilhs (Sprong el al. 2(X)')). According lO lhe cycloslrmignrphie
t¡,¡sodes \i>/. j.¡. l/O. 4
237
sludie.~ al Zunmi:l lhe FO of C. edl;'lrlll/I/,\' :lnd \he lirsl cnnlinunusQCcurrem:c 01' SI'!lellu/il/III.\' ¡¡re 32 and 22. re~pcclively. bedding
COuplclsfprecession cycles bclo\\' Ihe IOp 01' lhe AilzgOni Limeslone
Fonnalion (Bcmaola 2007: 13emaola el nI. 2009). Assuming a II\cunpcriod 01'21 kyr rur lhe precession cyc1es lhis means lhallhe* e\'ent~
are respcclivcly 672 and 462 kyr older lhan Ihe 10]J 01' lhe Danian
limeslones. Al Qreiya lhe organie-rieh layer is silualed belween lheselWO events. and il is appro:l:ill1alc1y 570 kyr older Ihan lhe IOp 01' lhe
Ailzgorri Limc~lonc Formalion in ZUl11aia and lhe OunianfSclandianboundary in lhe originallYpe arca 01' Denmark.
Primary and secondary markers
Base 01 'he Se/alldiall
The besl c\'ent for global. marine corrc!alion is lhe second
radial ion 01' lhe il11pol'l<lnl c¡¡lcarcous n:rnnofossil group. lhefaseiculilhs (charaCleril.ed by lhe lir~l OCeurren('c of rasl'Ículil/lfls
u/ii s.s.). CycloSlr.tligmphy combined wilh rnagnelOslrm¡graphy lmlYalso be crud;ll. for e:l:lllJlple. in correJalion lO caminenl:ll scclions.For regional marine eorrclalion. al leasl in nul1hweslcm Eum~. lheend 01' lhc acme of lhe nallnofo,~il farnily 13nt:1rudosphacnlCC¡le
logelhcr wilh Ihe cess:uion of long-Icrm c¡lrbonale deposilion and
evidcnce uf sea-leve! fall ean also be used.
Base DI fhe Tlwlleliafl
The C26rfC26n magnelOchron reversal is lhe besl globalcorrclalioll 1001 ;md can be applicd lO a varielY of f¡Kies.
Cycloslr:lligraphy logelher wilh lhe posilion of lhe Mid-Paleocene13i01ie Evenl ean be used for delailed rn¡lrine correl:llion.
Accessibilily, conservalion andprOleclion
Considering lhe exposure ¡¡long lhe main "playa" of lhe lownZumai¡¡ aecessibililY lO lhe GSSPs is oplirmll. There is cvcn ¡l holel
loealed on 101' uf lhe c1iff seclion (on lhe uppcr Thanelian pan of lheslrala). TIle lihed nmurc of lhe sImia ulJows cxccllcnt access along
Ihe be;leh ul lhe sall1c lime as one ascends ()J' descends lhrough Ihegeologic record. Aecess is limiloo during high lide ;md slmng 1,1I1dwardwaves. howevcr. bolh GSSPs arc aboye lhe highesllevcl whcre wave
:lclion normally erodes lhe cliffs. and lherc is no risk lhm the scclionwill be 10Sl beeausc of erosion. TIle ditl's and lhe beach are major
lourisl allnlc1Íons aud lhe loe¡¡l eomrmrnilY llnderswnds lhe "alue ofpreserving Ihe arca frolll exploilalion lhal may dam:rgc lhe GSSPs.Morcover. lhe enlirc oulcrop was prolccled by lhe Basque Govemmenl
in FebruMY 2009 wilh lhe "Deba Zumaia Coaslal 13iolOpC"'. adcclamlion lhirl guarantces lhe conscrvalion of lhe oulcrop. 11 is lhet1rsl gcological oUlcrop prolecled by law ill lhe Basque Counlry. The
managemel1l of lhe l3iolOpC. incJuding lhe Palcocene seclion. is ineharge of lhe COUlllY Council of Gipu~.ko¡l. which has crealed apal1icular "scienlifie rnanagcmen¡" 10 ensure Ihe pcrforrll¡lncc of lhe
lhree lllain objeclives 01' lhe nalural reservc: lhe proleclion 01' lheoulcrop. lhe prornolion and coordinalion of the scienlÍfic rcscarch
amllhe popul;lrizaÜon 01' the gcologieal V¡¡llle 01' lhe area. Therc areno rcslriclions lO salllllling. bUl il is advis;lble lO conlacllhe scienlitkmanagemenl orlhe scrlion ([email protected])IOOblainlhespccial
238
~ ... t....-",.
~"'" .pcnnil dial is rcqum:d lO worl. in the arca. It i~ also imponam 10 note
lhal lhere i.. an Inlerprelation Ccnler in Zumaia caUed Algorri and
that 3 complele progrom ""ilh geologieal guirJed cxcursion:. has bcendc\'elopcd lO promote Ihe knowledge of lhe section among scholaTSand \'i~itors. TIIC Zumaia M:Clion also contains excellcnl records oflhe CrclaceomJPaleogene and PalcoccnefEocelle bounuaries. :jdtlillg
lO ilS gcological significan<.-c.
bl ContnD.lI_.."""
--._--
...... _1 _ bI.l \herw " lT>I poultldity 10
-...~WIltl c:ycIottmigr~
v_ n.llUII:r<lp. n:l"*' no ... Oooez........ e-.I 8o<*Ille, _ jo -.g 10~ _ promohIlhIo oarUic-=tMtyn .... _ An~Io'm,*,~_
frcm~""'__ ~1íIed
10 __., 1*fTI1S""" 1O_.,1hIo HCl"""
Ya ThlIIClIDI'1" -..;no lhIo rt__al ..~ ••~
t'1- ThlloelIl vo-m-na..---a...._,...... .. ~....,.IO~.
. -_......__...._._.1l~"'_,_-o.'1
"-
lWO jeeps plus desen pcrmils. The ZUmai¡1 scelion is abo more
exp.1nded Ihan Ihc Qrciya seclion. alleaSl across the Dani:m-Sel:mdianIr.Jnsilion. An importunl <'·onsider.llion is Ihc facllh31 high.resolUlioncyclrn.lr.Jligraphy aOO good magnelostr.lligrophy exisl for Zumai¡¡.
wlw:reas lhese parameters canOOl be uscd al Qreiya. This i$ a very'ilrong argumem in fa\'or of Zumai;). Prescn"alion of fOl"3lllinifem
and calC".lreous oannofossils is superior al Qrciya rclatl\'e 10 Zumaia.bul preservalioo al Zumaia is slill sumeienl for csl¡¡blishing a high~
resolUlioo bioslrotigrJphy. Al Zumai:l cOlTclalions and ('olllpamti\'c
sludies eunl:e madc Wilh nearby coeval scdimenl scctions rcprescminga wiuc mnge of facies and envimnmenls. including base of slopeapron. inner and OUler shelf. deep-sc¡j ch:mnels and even cOntinenlal
f¡leics in Ihe Trcmp Basin lO thc southe¡ISI (Schmilz and Pujalte 2003).TI,is correlation pOlcntial opens the prospccl for del¡¡iled Icmporo'
and spalial reconslruclions of sea-Ievel changes al Ihe DanianlSel300ian aOO $ebndianffhanelian boundaries. Al Qrciya llw:re isalso subSlantial eorrelalion pOlenlial. bul lhe speetrum of
paleoenvironments is 001 as wide as in lhe Pyrenean regioo. Al lhefinal nt<.'Cling of lhe Palcocenc Working Gmup. held in Zumai¡¡ in
June 2007. lhesc issuc:. were discus.~ed in delail. and based onevalu:llion.~ of eXlensivc ¡jnd detailed dalu SCIS lhe Zumaia scclionwas unanimously considercd Ihe mosl suitable seclion lO host lhe
II)F__ larlongrro;. TelhyIVES
-9"Ill!'oc~""" _OCMnVESNom~.... YES
.....................................1 ..
,) ""*-Y'"-
"'ig/ln J7. SUII/I1Itlry ofelYlJualiol/ oftlle ZIII1Itlio sectiollfor 1I0ldil/glile Se/OIldiQII O/Id T/J(I/u!lioll GSSI's ill re/aliOli 10 lilerecommellllaliol/s by the IlIlematiOllll1 COlllmissioll (JI/ Slr(lligropl!J.
lllCre was a general rttOgnilion early in lhe !toCleclion procedurc
lhat Zum:lia would be onc of lhe prime caOOidatcs for GSSPs.. butne\'erthclcs.., (klaik-d orpilot :.Iudics have becn madc of ¡¡ large numbcrof set1ion, mainly in the COUnlrics ¡¡rounu lhe Medilerrnnean. ll1c
following ahemalive seclionl> halle been l>Criou'>ly considcr\:d: GebclAwcina. Gebel Duwi and Gebel Qreiya in thc E;l'>te01 Desert of Egypl
(e.g.. Charisi and Schmil~ 1995. 1995: Speijer and Schmilz 1998;Spcijer2000. 2003: Sprong el ul. 20(9). Sen Gurion in Israel (Schlllilzel al. 1997b; Churisi :md &hmilz 1998). Ihe Sidi Nasscur und Ain$eltar.l seclions near Kalaat Senan in Tunisi¡¡ (Sleumaul el ¡¡l. 2000:
Guasti CI al. 2())6; Van hterbceck el al. 2007: Sprong el al. 2Ol9).Botlacciooe Gorge and Conlcss:l Highway in haly (Corficld et al.
1991). aOO Carav0C3 in Spain (Arenilla~ and Molilla 1997). In ilsfinal stage lhe sclcetion proccdure was naITOwcd down 10 a comparison
of lWO ~tions. Zum¡¡ia. anu Ihe Qrciya seclion in lhe Eastcm OcSCr1of Egypt. Beeuu'>e of lheir cxedlenl records both s..:clions halle beC11Sludied in uetail by several groups aud cnll~iderable dala elli.,t. A
delailed profile ueross Ihe Qreiyu section was sumpled by B. Schl\1iv;.
R. Knox. N. Obaidal1ah and M. Solim:lll in 2004. Thc.~ sumpleswere di:.lribuled wilhin Ihe Paleocene Working Group and ha\'crcsulu:d in sc\"crol detailed :.Iudies (e.g.. Bemaola 2007; Monedli
aOO Reale 2007: Oruc-Et~ebaniact al. 2007a.b: Rodríguez and Aubry2(07). Slr.lligr.lphy aOO p:lleoeo\irooments were also intensi\"e1y
sludied in sc\·cral parallel sectioo!> al Gcbel Qrciya (e.g.. Spcijer2000. 2003; Bornemann et al. 2009; Sprong el al. 2009).
One major ¡¡dvanlage of ZUIll¡¡i" is il!> poo:.ition interrnedi:llebclwccn lhe North Se:l (or borc¡ll) region. whcrc lhe original slr.Jlotypcseetion:. for Ihe Selandian and ·nmnetian were detined. :md lhe more
southerly Tethys region. e.g. Egypt. Tllllisia and South Spain (SchrnilJ;et 31. 1998)" 11lc Zum3ia seclion contains faunal and nor.J1 clernenl.'>
represcnlati\"c of both regions aOO this facililalcs corrclalioo belwccnlile Nonh Sea aOO lhe resl of lhe world. During lhe P3lcoccne lheZumaia sile appear.¡ to ha\'e been alTecled by the <;ame sea-1e\"el ¡md
lilhology ch¡¡ngcs as other northwCSlern European siles. Placiog lheGSSPforlhc bascoflhe$clandian allhcshifi fmm limeSlooc lO marl
in the upper NP"¡ Zone P.1YS homage lO Alfrcd R<bCnkrontz's origin:lldefinilion of Ihe Selandian (1924) al Ihe ,>hifl frorn lime.~lone lO grey
marl illlhe Danish Basin. beC:lUSC mosllikely lhe change in lilhologyal Zumuia regislers the sarne regional evenl. The lirncstoncfmarl shiftofZumai:1 has :llso becn irJcnlificd in Ihe Loubieng scction in Aquilainc(SW Fmnce) (Steurbaul ¡¡nd SIIr.1kos 2008). Both scclioos are markcd
by a (:ommon dcposilional hislory. as shown by lhe ¡¡Irnosl idcnlicalstrotal QlCCcssion and scqueoce ofbio-ncnts. Zumaia excels IhrOlJgh
ilS beller aOO more pennancnl acccssibility of lhe OUIcn>p (roastalSttlion \eISUS quarry) and lhe wider gamul of sciemific informalion(preseoce of magoctoslroligrophic and cyclosllmigrophic sludies). bUl
Loubieng i!> :LlI excellent auxiliary seclion. The Zumaia scclion isalso superior rclative 10 Qrei)'a bccause ofits mllch bellcr aCl.:cssibility.
A visillO lhe Qreiya '>ection rcquires a smal! expedition wilh al leasl
Summary of selection procedures
GSS~ for lhe Selandian ¡¡nd Thanelian Slal;c.... 1ñe .....orking group
earefulJ) cvalualcd lhe slanding of lhe Zumaia M.'t:tion in rclalion \O
lhe requiremenls for a GSSP according lO Ihc I",croalional
Commission on Slruligrnphy. and foond lhm Zumaia is c10se lO idealfor placing Ihe GSSPs lhere (see fUl1her rompilalion in Fig. 17). 1ñeInlemational Union of Gcological Scienees rnlified lhe propo:.cd
GSSPs forthc Sclandian :mdlllanetian slab'CS al Zurnaiaon Scpternhcr23.2008.
Rel"erences
Adalle. T.. Boile. M.P.. de Kaencl. E.. Gawcnda. P.. Winkler. W. and\'on Salis. K.. 2000. Climalicevolulion from P.Jlcocene locarliCSIEoo.-ne infem:d from c1ay-nlinernls: a lmnsccl from IIOI1hcm Spain
(Zumaya) lO soulhem (Spain. Tunisia) and soulheaslem TClhysmargins (Ismcl. Negcv). GFF. v. 122. pp. 7-8.
Agnini. C. Fomaciari. E. Ram. L Rio. D.• Rühl. U. and Weslerhold.T.. 2007. Evolulion of middJe PaJeocene lhrough early Eocenecakareous nanoofossil (001' Sile 1262. Walvi'i Ridge. soolhcrnAllamic Occan). Marine Micropaleontology. \'. 6-4. pp. 215-248.
Ali.1. R. andJolley. D. W.. 1996. Ou'OnoslrJtigraphic frumcwork forlhe Thanelian and lower Ypresian dcposits of SE England.
Gcological SocielY of Londoll SpcÓ¡¡1 Publicalion. v. 101. pp.129-144.
Afi. J. Ro. Heill11anll·Clall~cn. c.. '11OI11scn. E. :ll1d Abr,¡hamscn. N..199-1. Magnclostruligmphy of the typc Sclandian: preliminaryrcsults: OFF. v. 116. pp. 4].
Alvarcz. W..Alvarcl.. L W.. Asaro. Eand Michcl. H. V.. 1982.CurrcnlS1alus oflhe impac11heoty fOl' lhe lerminal Crclxeous eXlinclion.
Geological SOctCIY of Amcrica Special Papero v. 190. pp. 305·]15.
Apcllani7.. E.. 1998. los foraminíferos planclóniCQ!, en el lránsitoCrclácico-Terciario: análisis de cuatro secciones en depósilos de
cuenca profunda de la Rcgión Vasco-Cantábriea. Tesis docloml.Uni\'ersidad del País Vasco. 390 p.
ApcJlanil.. E.. LllInolda. M. A. alld Oroc-Etxcbarria. X.. 1983. Posicióncslrmigráfiea de hls "Calizas del Danés". Pa(s Vasco. Revista
Española de Micropllleolltología. v. 15. pp. 447-455.
Arenillas. 1. and Malina. E.. 1997. Am'llisis eualllitalivo dc losforalllinífcros planctónicos del Palcoceno de Cara vaca(Cordillems Béticas); Cronocslratigrafía. biocstr;¡(igrafía y
evolución de las asociaciones. Revisla Española de Paleonlología.v. 12. pp. 207-232.
Arenillas. l. and Molina. E.. 2000. Reconslrucción palcoambientalcon foraminifel"O!> planctónicos y t:T'OOOCStrnligrafia del tránsiloPaleoceno-Eot:eno de Zumaya (GuipUzcoo). Revista Española de
Micropaleonlologia. v. 32. pp. 283-.300.Arcnilla-'i. 1.. Ar¡;. J. A.. and Molina. E.. 1998. Ellímile Crctáci..:<i
Terciario de Zumaya. Osinaga y Músqui' (Pirineos): controlbiocslraligráfico y euantitalivo de hilllos con foraminíferosplllnclónicos. Revisla de la Sociedad Geológica dc España. v. 11.
pp. 127-138.Arcnill'IS. 1.. Ar¡;. 1. A. and Molin¡¡. E.. 200-1. A new high-rcsolulioll
planklic fornminiferal zonlllion alld subwnatioll for lhe lower
Danian. Lcthaia. v. 37. pp. 79-95.Arenillas.!.. Molina. E.. Ortiz. S. and SchmiI7.. B.• 2008. ForaminifcrJl
:lOO ljl1c isompic c"clll-slratigraphy across lhe Danian-Selandianlransilion al Zumaya (northem Spain): chronoslr.uigraphicimplicalions. Tem Nova. v. 20. pp. 38-44.
Eptwdu Ib/. 34. no. 4
1J9
Arl.. J. A.. Arenillas. 1. and t\'lolina. E.. 1999. Extinción deforaminífcrU\ plal1C1ónicos cn el trán,ito Crclácico-Terciario de
Zumaya (Guipúzcoo): supcrvi\oencia o relaboración? Re\islaEspañola de MicropaleonlOlogfa. \'. 31. pp. 297-3()..I.
Aubry. M.-!'.. 199". Thc Thanelian Slagc in NW Europc and ib
signifleant:e in lcml' of global e\·ellls. GFF. v. 116. pp. 43-44.Aubl)'. M.-P.. Omi.1. K.. Dupuis. c.. Rerggren. W. A.. Van Coovering.
J. A. alld lhe Membcrs of the Working Group 00 lhe PlllcoccncJ
Eoccne Boundary. 2oo7. Global Sland:m:1 SlrJIOlype-St-clioll lllldPoinl (GSSP) fUI" lhe base of the Eoccnc Series in lhc Dababiya
seclioll (EgYPl). Episodes. v. ]0. pp. 271-286.Bacela. J. L 1996. El Maaslriehiensc superior. Palcoceno e Ilcrdien-.c
inferior de la Región Vasco-Cantábrica: Secuencia~
Deposicionales. Facies y Evolución Paleogeográfiea. Tcsi~
Docloral. Uni\'ersKlad del P-Jí!> Vas4.'O. 372 p.Baceta. J. 1.. Wrighl. V. P. and Pujalte. V.. 2001. Palaco-mixing 70ne
\:anol fealures from Paleocenc earbonales of nol1hcm Spain:crilena for rcrogni¡;ing a potentially wide~pread bul rarely
documentcd diagcnelic syslem. Sedimcnlary Geology. \. 139. pp.105-116.
Bacela. J. 1.. Pujalle. V.. Serra-Kicl. J.. Robador. A. and Orue
Etxcbarria. X.. 20C». El Maa~lriclllicnsc final. Palcoccllo eI1crdicn....c inli:rior de la Cordillera Pirenaica, [n: Vera. J.A. (Ed.).
Geología de Esp:liía. Sociedad Geológica de España-lnslilulOGeológico y Minero de España. Madrid. pp. 308-]13.
Bacela. J. 1.. Pujalle V. and Bernaol¡l. G. 2005. Pa1ctx:cnc coralllgalreefs ofthe WC!>lcrn Pyrenean basin. oor1hern Spain: Newevideoce
SUpporling an earlicsl Palcogenc J"CCO\'el)' of reefal ecosystcms.
Palaeogeogmphy. Palacoclimalology. Palaeoecology. \. 22-1. pp.117-143.
Baceta. J. L Bemaola. G and Aroslegi. J.. 2006. 1ñe mid·PalCOC"t'oc
imer....al al Zumaia. 4.2 Líthostrnligraphy. In: Bemaola. G. Bacela.
J. l.. ?ayros. A.. Oroc-Eoteb.arria. X.. Apcllaniz. E. (Eds.). ThePaleocene and lower Eocenc of the Zumaia scction (BasqucBasin). Clim:lle and Biota of Ihe Earl)' Paleogene 2006. PO<;I
Confercnce Ficid Trip Guidcbook. Ililbao. pp. ]8.-42.Baceta. J. 1.. Wriglll. V. P.. Beavillglon-Pellncy. S. J. and Pujahe. V..
2007. Palat'Ohydrological comrol of p:tlacok:1rst mat'ro-porosil)'
gencsis during:l major sea-levellowSland: D:mian of lhe UrbasaAndia plmeau. Navarra. North Sp:lin. Sedimentary Geology. v.199. pp. 141·169.
Ilcrggren. W. A.. 1971. Tel1iary boundarics and correlation~. In:FunnclJ. B. M. and Riedel. W. R. (Eds.). 1ñe Micropalcomology
oflhe (k:cans. Cambridge Uni\'miIY Prcss. pp. 693-809.Berggren. W. A.. 1994. In óefenscoflhe 5elandian AgcJSlage. GFF.
v. 116. pp. 4446.Berggren. W. A. and Aubert. J.. 1975. Paleocenc benlhonic
foraminiferal bioslratigraphy. paleobiogcography and
paleoccology of Atlantic-Telhyan regions: MidwaY-IYPC fauna.Palaeogcogr,lphy. Palacoclimalology. Palacoccology. v. 18. pp.
73·192.Berggrcn. W. A. and I>earson. P. N.. 2005. A revised lropical lO
subtropical !'alcogene plaoklonic for.lminifemIlOnation. Joumalof Fomminiferal Rcscarch. v. 35. pp. 279-298.
Bcrggren. W. A.. Kcnl. D. V.. Swishcr. 11I. C. C. and Aubry 1\'I.-p..1995. A revise<! Ccnol.Oic geochronology aOO chronoslmligrnphy.
SEPM Spt'Cial Publicalion. v. 5-1. pp. 129-212.Berggren. W. A.. Aubry. 1.1.-1'.• van Fossen. M.. Kent. D. V.• Norris.
R. D. aOO Quillé\·tré. F.. 2000. Imcgratoo Paleocenc cakareous
140
planklOfl magllelobiochronology alld slllble isotope ~Ir.llignlphy:
DSDP Sile 384 (NW Atlanlie Oeean). Palaeogeography.
P-.J1aeodimlllology. Palacoc<:ology. v. 159. pp. 1-51.
Bcmaola. G. 2002. LU'> nannorósiles calcáreos del Palcoccno en elDominio Pirenai¡;;o. Bioeslraligrafía. ¡;;ronoeslraligrafía y
paleoeeología. Tesi" Docloral. Uni~er.sidad del País Va~¡;;o.
445 p.8em:tola. G. 2007. t ew high-resolulion cakareous nannoros.. il
analY"il> OCTOSl> lhe Danian·ScI:mdian lransilion al the Zumaya
..cetion: Comparison wilh Soulh Tethys and Danish scction...
Inlemaliooal Workshop orIlle Palcoccne Worl.:in~Group.Abstrocl
Volume. Zumaia. Basque Counlry. pp. 13·17.
Ilcrn:lola. G and Nuño-Aran:l. y.. 2006. Cakarcou" ll:mn{)fo~,i1
:1"M:mblagel> acro"~ lhe mid·P:llcocene. In: Bemaola. G. Baceta,
J. 1.. PayTOS. A. Orue·ElxcbalTia. X.. Apellaniz. E. (EtIs.j. 111CPaleoccnc and lower Eocenc 01' lhe ZUIII;¡i:l scelion masque
Basin). Clirn:lll.' ami !JiOI:! nI' Ihe Early Palcogene 2006. POSI
Conrercnce Fidd Trip Guidcbook. Bilbao. pp. 44-46.
Benmola. G. Baeela. J. l.. Orue·Elxebarria. X.. Alegre!. L.. M:Jnín·
Rubio. M.. Aroslegui. J. and Dinarc..-Turcll. J .. 2007. Evidcnce
01' an abrupl environmcnl:ll di ..nlplion during lhe mid-P:llcoeenc
biOlic e\enl (Zumaia "l'Clion. weqern Pyreneelo). Geological
Socicly 01' Amcrica Bullelill. v. 119. pp. 71:15-795.
Bcmaola. G. Manín-Rubio. M. and Bacela. J. 1.. 2009. New high
rc..olulioo cakareoulo oannofm."il aoaly~¡s across lhe Danian/
SclaOOian tr.lIl~ilion allhe Zunuia "CClion: comp:ui:>Oll .... ith Somh
Telhys and Danish §cctioos. Gcologica Aeta.. v. 7. pp. 79·92.
8ignot. G. CUIT). D. :md Pomero!. C.. 1997. The resislible risc 01' lhc
Selandian. Neues Jahrbuch flir Gcologie und PallioOlologic
Mooabhefle. v. 1997. pp. 114-128.
Rr.t1o.... er. T. 1.. fumoli Siha. 1.. Malonc. M. J. and 24 OdlCD. 2002.
Procecdings 01' Ihe Occan Drilliog Progmm loitia! Reports. Lcg198. hnp:llwww-odp.lamu.cdul publicalionslI98_IRJI98ir.hlm.
lJomcrn:ulO. A.. Sl;hullc. P.. Spmng. 1. Sleurbaut. E.. Yous;,ef. M.
:lI1d Speijcr. R.P.. 2009. Llle,l Danian eamon isotope anontaly
and <Issocialcd clwironlllentnl change in lhe soUlhem TClhy~
(Nile Ba.~in. Egypt).lourmrl ofthe Gcological Sociely ofLllndon.
v. 166. pp. 1135-1142.
C:Lballero. F.. 2007. Análisis micropnleonlológico de lo~ límilc~
CretácicolTcrciario. DanicnsclSel:lOdicn~ y PalcoccnolEo(;eno
en la Cuenca Va~co·Canlábric:l. a lnlvés de for:trninífcro,
planeIÓoit·os. Te~i~ DOCloral. Univer~idad del Pals Va..co.
519 pp.
Canuelo. J. l. aod Molina. E.. 1992. 1>lanklic foraminifer.J.l faunal
IUmover aOO bio-chronostrJligraphy 01' lhe PalooccnclEoccne
bouOOary al Zumaya (Nonhem Spain). Revisla de la Sociedad
Geológica de Españ.a. \'. 5. pp. 145-157.
Canudo. J. L. Kellcr. G. Molin:t. E. aOO Oniz. N.. 1995. P1anllic
foraminiferal tumo\'er aOO 51 'c i~opes across lhe Palcoccoe·
Eocenc Iransilion al Caravaca aod Zum<lya. Spain.
Palaeogeogruphy. Palaeoclim:nology. P-Jlaeoecology. v. 114.
pp. 75·100.
Charisi. S. D. and Schmilz B.. 1995. SlabJc (51'C. 51&0) aOO slronlium
(.lSr~Sr) isolopes through lhe Paleocene al Gebel Awcina.
e:lslem Tethyan region. Palacogeography. Palacoclilllalology.
Palacoccology. v. 116. pp. 103·130.
Charisi. S.D. and SchmilZ. 13.. 1998. Pnlcocenc to carly Eoccne
Il:tlcoce:lOogrnphy 01' the Middlc Easl: 5l1C and 51~0 isowpcs
from foraminifeml calcite. P:llcoccnnography. v. 13. 1'1'.106-118.
Clelllrnenseo.A. aOOThom<ocn. E.. 2005. Palcoenvironmcnlal chaogcs
across lhe DanianfSelaOOiao bouOOary io lhe Nonh Sea Ra.~in.
Palaeogeography. Palacoclimatolog~. Palaeoccology. \. 219.
pp.351·39-l.Corlield. R. M .. I~. Palacoccne occans and dimate: An isotopic
pen>pecti\'e. Eotrth-Science Re\ie.....1ó. \'. 37. pp. 225-252.
Corficld. R. M. Canlidge. J. E.. Premoli-Sih·a. l. aOO Uousle~. R. A..
1991. OXygcn aOO carbon ¡"Olope MrJtigrJphy 01' lhe P.Jleogcnc
and Cretaceou~ limc....tones in lhe BOIlaccione Gorgc and the
Comessa Uighway seclions. UlIlbria. ltaly. Tcrra No\a. v. 3.
pp. 414-422
Dinares-TurclJ. J .. Bacela. J. 1" Pujaltc. V.• Orue·EIJlcbama. X. :lIld
Bemaola. G.. 2002. MagrlCto~lrJtigmphicaOO cyclostratigr;lphil'
calibration or a prospcclive l>alaeocene·Eoccne str:llOlype at
Zumaia (Basque Basin. nonhcm Spain). Tcrra Nova. v. 14. I)P.J71-37R.
Dinarh-Turell. J.. Bal·cta. J. l.. PlIjalte. V.. Orue·Elxcbarrin. X..Bernaola. G :md Lorilo. S.. 2003. Unlangling lhe I'alacoccne
c1imatic rhylhrn: :m a~lronolllically calibrJled E.1rly I'alcoccne
magncloslm\igmphy :lIKI bioslmligl"Jphy at Zum:lia (Ba'l:luc baloin.
oonhem Sp:lin). Eo.nh und PI:mctar) Science Lelle..... \. 216.
pp. "83-500.
Dinares-Turell. J.. Baceta. J. l.• Bcmaola. G. Oruc·Etxcbarria. X.and Pujalle. V.. 2007. Clo~ing lhe Mid-Palactll.:cne gap: To.... allJ
a complele :LSlrooomically luoed Pal3COl."roe Epoch and $elandian
and Thanel.ian GSSPs al Zumaia (Basque Basin. W. Pyrenees).
Eanh aOO P1anctary Scicocc Leuen.. \. 262. pp. 4.')0.467.
Dinares-Turel!. J.. Sto~ko\3. K.. Baceta. J.I..I\'aoo\'. M. aOO Pujalte.V.• 2010. High-rcsolulion ¡mm- and iruerbasínal correlalion 01'lhe Danian·Selandian transilioo (Early Paleoccoe): The Ojala
sectioo tBulgarial and lhe Sclandian GSSP al Zumaia (Spain).
PalacogeogrJphy. Palacoclimalology. Palacocrology. v. 297.
pp. 511-533.
Dollfu~.G F.. 1880. Essai sur I'c:<lension des tCrJ""Jins lel1iairelo dans
le basin anglo·parisicn. Bultelin de la Sociélé Géologi(IUC dc
Norm:lndie. v. 6. pp. 584-605.
Gómcl de L1arena. J .. 1946, Rcvi~ión de Hlgllno~ dalo~
p:lleonlológicos del Flysch crclkco y nUlllrnulílico de GlIiplll.(;O:I.
Instiluto Geológico y Mincrodc España. Nota.~ y Comunicaciones.
v. 15. pp. 113·165.
Goro~\idi. A.. 1993. N:m~Jfósib cakareous y evenlOS del Crelticico
Medio-Superior de la CuellC:l Vasco-Canttibrica. Tesis OoclorJ1.
Uoiversidad del País Vasco. 331 pp.
Guasli. E.. Speijer. R. Po. Brinl..huis. 1-1 .• Smi!. J. aOO Slcurbaul. E..2006. Paleocnvironrnental change al Ihe Danian·Se1andian
lmnsitioo in Tunisia: ForaminiferJ. organic.walled dioonagcJlale
cyst and caJcareous Ilannofossil records. Marine Micro·
paleonlOlogy. \. 59. pp. 21Q.229.
U:m"Cn. U. L 1968. On lhe biostraligraphical age 01' Ihe lo.....er
Selandian of Denmark. Meddelelser fra Daosk Geologisl
rorening. v. 18. pp. 2n-284.Ueilm:mn-Clausen. C .. 1985. Dioonagellale slr.J.ligraphy of lhe
uppermosl Daoian lO Ypresian in the Viborg 1 borellole. cenlml
Jyl1and. Denmark. Daornarl:s Geologiske Undersogelsc. v. A7.
pp. 1-89.
Heilmann·Clausen. C .. 1994. Review 01' Palcocene dinonageilalcs
fromlhe Nonh $e:l regioll. OFF. v. 116. pp. 51-53.
Hcillll:mn-Clausen. c.. 2007. Dinocysts ("mm an cxp:lOdcd seclion 01'lhe Selandian·Thuneli:rn lmnsilion: lhe Rodbyhavn.1 borchole.
lhctmrJNr 20//
SE Ocnm:lrl. Intemalional Workshop of lhe Paleocene WorkingGroup. Ab~lrJCl Volume. Zumaia. Basque Coulllry. pp. 26
27.Uilgcn. F. L Kuiper. K. F. ami Loorens. L. J.• 2010. E...alualioo of
lhe aSlronomil..-allime salle for lhe Paleocene aOO earlicsl Eocene.
Eanh aOO Planelary Science u'tlers..... 300. p. 139-151.Ull1cbr:lOOI. A. \"Oo. 1965. Foramioikren-Straligraphie in Alneniar
\'011 7..um3y... (Pro\·ill7. Guipúzcoa. W Spanien) uOO ein Vergleich
mil anderen Telh)'s-Gebielen. Ba)'eri~che Abdemie dcrWi~nsch3flen.Abhandlungen der MUlhematisch-NUluN'isscn
o;chafllichen Klasse. v. 123. pp. 1-62Hme. N. M.. 199-1. Calcareous nannop1:mklOO asscmblages from the
ThallCl Form:llion in Ihe Bmd\\'ell Borehole. E:.sex. EnglaOO. GFF..... 116. pp. 5-1-55.
Jenkins. D. o. and Lutcrbachcr. 1-1.-1'.• 1992. Plllcogcne slllgCS :lI1d
Ihcir bOlllldl1rics (Introductor)' rcmurks). Ncucs Jahrbuch rol'Geologic lInd Pa1:iontologic. Abh:llldlungen. v. 186. pp. 1·5.
K:lpellos. C. 11.. 1974. Ucber das Nannoplanklon im AlttcniÜr desl>ronls von Zumaya·Guetana (pro... inl. GUipUlCoa. Nordsplmicn).EdogllC geologica Hcl ...clica..... 67. IIp. 435~.
King. C .. 1989. Cenozoic of the Nonh Sea. In: Jenkins. D. G and~'Iuml)'. J. W. (Eds.). Stralignlphical Alias ofFossil Fonlminifern.
Secood Edilion. Ellis HON'ood LimilOO Publishcrs. Chicheslcr.pp. "'18-189.
Koox. R. W. O·B .. 199"'a. 1ñe age and regional eonleXI of lhe
Thanetian stnllOl:)'pe sec1ioos of SE England. GFF. \. 116. pp.55-56.
Koo.lt. R. W. 0'8.. 1mb. From regtonal <¡tage lO ~laOOard "lage:
imptication" for the hislorical Paleogene SIr.llOI)'peS of NWEurope. GFF. v. 116. pp. 56-57.
KIlO.It. R. W. 0'8.. 1998. Kaolinilc innux ",ithin PaleoccnelEoccne
boundary Slnlla of weslem Europe. Newsleuer 00 Strdlig....... ph)'.
.... 36. pp. "'9-53.Kuhn" W. llnd Kaminski. M. A.. 1997. Cenomnnian to tower Eocene
dccp-wmer ai:!glutinaled foraminiferu from Ihe Zumaya se<:lÍon.nonhem Spain. Annalc.~ Sociel:Llis Geologonllll Poloniae..... 67.
[JI'. 257-270.Kuiper. K. F.. Dcino. A.. Hilgen. F. L Krijgsm:ll1. w.. Renne. P. R..
and Wijbrnns. J. R.. 2008. Synchroni/ing roek clocks of Eunh
hi'lOr)'. Scicnee. v. 320. pp. 5QO.504.L¡lskar. J.. Robutcl. P.. Joulel. F.. Gaslinc:Ju. M.. Correiu. A. llnd
Lc\ TUrd. B.. 2004. A long.term numerical solution for the
insolalioo qual1lities of the Eanh. Aslrooom)' and Astrophysics.
v. "'28. pp. 261·285.Louren,. J. L. ~Iilgen. F. L L.:c.kar. J .. Shadletoo. N. J_ and Wilson.
D.. 200-1. The Neogene Period. In: A Geologic lilJlCS("ale 200-1.Gr.Kistein. F. M.• Ogg. J.~. aOO Smith. A. o. (Eds.). Cambridge
Unher.¡ill Press. pp. ..J09....-..w.Lulcrbac:her. H. P.. AH. J. R.. BrinJ..huis. H.. Grn(htein. F. M.. Hooler.
J Jo, Monechi. S.. Ogg. J. G. Powel!. J .• ROOI. U.. Sanfilippo. A.aOO Schmilz.. B.• 200-1. 1ñc Pakogene I)criod. In; A Geologic
limcsca1c 200-1. Grndslein. F. M.. Ogg. 1. G. and Smith. A. o.CEd'i.). Cambridge Uni\"e.....il)' ~s. pp. 38+408.
Manini. E.. 1971. Standard Tcniary and Qualemary ealcllrcousnannoplanklon 7.onalion. In: Farinacci. A. (Ed.). Procecdings uf
Ihe Second Planklonic Confcrcncc. Rome 1970. EdilizioneTcchllCN:icnl.l1. Rome. pp. 739·785.
Molin:J. E.. Arenillas. l. and Arl. J. A.. 191)lt Mass extinclÍon inplanktic foraminifcra al lhe Crclaccou~f1'crliary boundary in
1:¡Jl.<oi/... ltJJ. J4, 11O. .J
2.J1
SlIblropical and temperate lUlillldcs. Bulletin de la Sociélé
l,.>éologique de France. v. 169. pp. 351-363.Mulina. E..Arenil1as. J. aOO Pardo. A.. 1999. High-resollllion planktic
fo......minifernl biosnaligraphy and correlatioo across lhe Pak.'OCCneIEocene boundary in lhe Tcth)'S. Bulletin de la Sociélé géologiquc
de Francc. v. 170. pp. 521·531.Molina. E.. Alegret L.. Arenillas 1.. Arl. J. A.. Gallala. N.. Hanlcnbol.
J .. \'011 Sali". K.. Sleul'baut E.. Vandenberghe. . and ZaghbibTuri;i. D.. 2006. Thc Global Boundary SlratOl)'pe Scctioo and
Poinl for the base of lhe o-...nian Slage (PalcoccllC. Pa~'CIlC.
·"Tcrtiary··. Cenowic) al El Kcf. Tuni"ia· Originlll definilion aOO
re\"i,ion. Episode". v. 29. pp. 263-273.Molina. E.. Alegret. L.. Arenillas. 1.. An. lA .. Gallala. N.. Graja1cs·
Nishimura. M.• Murillo-Muñelon. o. and Zaghbib-TlIrki. D.•2009. TIle Glob:J1 Bound:lry Sll1ltOl)'pe Section and Point fol' theba~e of lhe Dani:l11 Sla~e (Palcoccne. Pa1cogenc. "Tcrtiar)'''.
CenolOic): auxiliary seclions and corrclation. Episodcs. v. 32.pp. 84-1)5.
MOllechi. S. and Rcale.. V.. 2007. D:miatl-Sclandian cI'olutiolmrylrelld uf Fll.IÓt·lIlirlllu :u ODP SilC 1262. comparison Wilh theQreiya (Eg)'pt) and Zumaia (Spain) scctions. InternationalWorkshop of the P.... lcocellC Working Group. Abstrael Volume.
Zumaia. Basque Coonlry. pp. 28·29.
Nic!'iell. S. B.. Thomsen. E.. Hanscn. D. L. and Clausen. O. R.. 2005.P1alcwidc stress rclaxalion explains European Palae(l(,:cne ba~in
ill\Cf'Sions. Nalure. v. 435. pp. 195-198.
Nielscn. S. B.. Slcphenson. R. aOO Thomsen. E.. 2007. D)"namics ofMid-Pal3eOCt':1lC 'Of1hAllanli~' rifling tinlOO ""im European inlr:t
plale dcformalions. 'ature. v. 450. pp. 1071·107....Obaidalla. N. A .. EI-Da'o\)'. M. H. and Kassab. A. S.. 2009.
Bi~lr"'lig"""'phyand paleocn\"iroomcm of lhe DanianlSelaOOian
(015) lrolnsilion in lhe Soulhem Telh)'s: A case sludy from IlOflhF..aslcm Desen. Eg)'p1. Joumal of Afriean Eanh SciellCCS..... 53.
pp. 1-15.0ISS011. R. K.• Hemlcben. C.. Berggren. W. A. and Huber. B. T.. 1999.
AlIas of Paleoeene planktonic foraminifera. SmithsonianContributions in Plllcobiolog)'. v. 85. pp. 1-252.
OI·lil.. N.. 1995. Differcnlial pallcrns of bctlthic fornminifenrl
extinclion~ ncar lhe Paleocel1e/Eocene bollndnry in Ihe NorlhAllanlic and the we~lern Tcthy~. M:ll'ine Micropaleontology.v. 136. pp. 17-30.
Orue·Elxebarria. X.. Bemaola. 0.. I):«:cla. J.I .. Angori. E.. Caballero.F.. fI.'loncchi. S.. Pujlllle. V.. Din:u·es-TlIrell. J .. Apellani7. E. andp....)'ros. A.. 200-1. New eon~lr.. ints 00 lhe e\olution of planktic
foraminifers and calcareous nannofossils 3CTOSS !he Palcoccnd
Eoccne boundary inlcrval: the Zumaill scclion re\ isiled. Nc~Jahrboch rur Geologie uOO Pal~lologie. Abhandlungen. \-. 234.pp. 223-259.
Orue-Euebarria. X.. Apellaniz. E. and Caballero. F.. 2oo7a.Discrepanc:ies in planktic foramrnifera bioslroltigraphics acros,lhe Danian-Sclandian Irnnsition al Zurnaia: NOI poorproet"\·atioo.
bul laxollornic difTerent COfK:Cptl>. Intematiooal Wori.shop of lhePalcoceoe Wori;ing Group. Abslnlt'l Volume. Zumaia. BusqueCountry. pp. 3(}"32.
Orue·Euebarria. X.• Alegret. L.. Apellani/. E.. Arenilla.'. l.. Uat:cla.J. 1.. Bemllola. 0.. Cabul1ero. F.. Din:u-es-Turel1. 1.. Martín·Rubio.
M.. Molina. E.. Ortiz. S.. Pujalte. V. and Schmitz. B.. 2oo7b. TheZumaia seclion: a robUSI cundidlllc rOl' lhe placemCrll 01' lheDalliall/Selandian und Sclandi¡lIIffhancti:ln boundaries.
241
lnlcrllalional Workshop of Ihe Palcocene Working Group.
Abslr:lCIS Volulllc. Zurnaia. llasquc Coorury. pp. 33·35.
Oruc-EIXebalTi:l. X.. Apclhllli.f_ E.. Oniz. S.. Pujahc. V. and Caballero.
F.. 2010. Ncw forallliniferal crilcria 10 pinpoim lhe ncwly
dcfined GSSI' for lhe Mid-Paleoccne Sclandian Slage in lhe
Zumaia Scclion (Rasque Coonlry). Inlemaliollal Symposium Ofl:
Fonarniniferd (FOr.Ulh 2010). Ab~lrdel ...olume with progrJ.m_
pp. 151.
Pcdcrsen. G K. and Surlyk. F.. 1983. 1llc Fur Fonnalion. a late
P.dlcocene a-..tl·bcaring dialomile fmm llOr1hcm Dcnmari:. Bullctin
of the Geological Socicly of Dcnmark. v. 32. pp. 43-65.
Pcrch-Nicl'iCn. K.. 1979. Calcareous nannofossil zonal ion ;u Ihe
CretaceousfTeT1iary boundary in Dcnmark. In: Birt.cluOO. T. aOO
Brornlcy. R. G IEds.). Procecdings CrctaceousfTCT1iary BouOOary
E\ents Symposiulll. \01. l. Uniq~rsity of Copenhagen.
Copenhagen. pp. 115·135.
Pcrch·Niclscn. K. aOO Hanscn. J. 11.1 .• 1981. SclaOOian.ln: PomcroL
C. (Ed.). Stmtoty¡lO of Pal~elll: stages. Mémoire hors série 2du HuUdin d'infonnation do géologues du Bassin de Paris. pp.
215-230.
Pujalte. V.. Baceta. J.I .• Oinares-Turcll. J.• Oruc·EtJl.cbarria. x .. Pares.J. 1>1. and Payros. A.• 1995. Biostratigraphic and magnclo
strJ.ligmphic intcrcalibmtion of lale Maa.~richlian aOO p-J.loocene
depo:-.ilional sequences fmm lhe deep·watcr Basque basin.
W. Pyrcnccs. Spain. Eanh and l'l;metary Science Leucrs. v. 136.
pp. I7-JO.Pujalte. V.. Barela. J. L Orue-Eucoorri:l. X. aOO Payros. A.. 1998a:
Paleocene "tmta of lhe BaMlue Counlry. W Pyrenees. N Spain:
rack:'> and SC(luencc dc\'clopmcm in a dccp-watcr. slar'OO basin:
In: Gr:lcian~ki el al. (Ed.). Mc.'>Ozoic and Ccnozoie Scquence
SIr:tligrJ.phy nf European B¡lsins. Spccial Publications of lhe
SEPM. v. 60. pp. 311-325.
l'ujalte. V" Bacela. J. l .. Apellani .... E.. On.lc·Elxcb¡lITia. Xh Payros.
A. and Serm-Kiel. J.. 1998b. Paleoccne of Ihe Pyrcnccs and Ihe
North SCll B¡I~il1: diffcrcnccl> Hnd similaritics. Ncwslellcr un
Slrnligraphy. v. 36. pp. 43-47.
Pujalte. v.. Robles. S.. On.lc-EIXebalTia. X.. Baceta. J. l.. Payros. A.
llnd LarruzclI. 1. F.. 2000. Uppcl'mOSI Crclaccolls-middlc Eocel1c
~1I";lla of lhe BaMlllc.C:lIllnbrian n.~gion and wcslcrn Pyrcnecs: ;1
sClJuence l>lr:lligr¡lphic pcrl>pecli ...c. Re... isla de la Sociedad
Gcologica de Esrmña. v. 13. pp. 191- 21 l.
Quillévéré. F.. Aubry. M.-P.. Norris. R. D. and Berggrcn W. A.. 2002.
Palcoc-cllc oceunogmphy oflhe castcm liublropicullndiul1 OcC¡lll:
An il1legr:lled magnelobioslr:lligmphic and stable iSOlopc study
of OOP !lolc 761 B (Wombal Plalcau). Palaeogeography.
Palacoclim¡lIology. Palaooet:ology..... 184. pp. 371-405.
Rene... ier. E.. 1873. Tableau ~es tcrrain.. !iédimenlaircs fom16 pendan!
les époques de la ph:ISC u'l;anique du globe lClTCStre. Bullelin de
la Sociélé ValK!oi'>C des Sciences Nmurellcs. Laussal"lC. v. 12. pp.
211'-252.
R\x!rigue.f_ O. M. aOO Aubl'y. M.-P.. 2007. Lowcrto middlc (Oanian
Selarx!ian) Palctx:ene ealc¡lI\.'Ou~ nanoofrn.sil strJ.tigrJ.phy of Ihe
Qrciya scction (Egyptj. Inlemational \\'orkshop of the PaICOCCrlC
Working Group. Abstrdct VolulllC. Zumaia. Basquc Counuy.
pp. -ID.Rosenkmmz. A.• 192·t De k,menha\'nske Gron.....ndslag og dere...
Placering i den dansl..e Lagr.ckke. MOO et Skema overdct danlike
Paleoc¡en. Meddclclscr fra Dansk 8,-COlogisk Forening.. \. 6.
pp. 22·39.
Salis Pcrch·Nielscn. K. von. 1994. Ncogcne and Palcogcne calcareous
n;mllofossils from the Harre borcholc. Dcnmark. In: NieJsen. O.B.
(Ed.). Lillmsll':lligrJ.l)hy and Biostratigraphy of Ihe Tcniary
Sequencc fro1111hc Harre Borcholc. Dcmnart.. AarlluS Gooscicncc.
.... 1. pp. 45·51.
SchmilL, IJ., 1m. TIlC Palcocene Epoch - strJtigraphy. global changc
alx! e\'Cf1ls. GFF. v. 116. pp. 39-41.
Schmil/.. B. aOO Pujahe. V.. 2003. Sca-Ic\·cl. humidilY and land
erosion rcconIs across the initial Eocene thcrmallllaximum in a
ooolinenlal·marinc transcct in nonhem Spain. Geology. \'. 31.
pp. 689-692.Schmil/.. B.• Asam. F.. Molina. E.. Moncchi. S.• \'00 Salis. K. aoo
Speijer. R. 1).. 1997a. High-rcsolulion iridium. lil'C, li'·O.
für.lminifcra aOO nanoofossil profilcs across the latesl Palcoccnc
bcnlhic extinction e\'ent al Zumaya. Spain. Palacogcogr.aphy.
PalaetJClimalology. Palaooet."ology. v. 133. pp. 49-68.
Schmiv. B.• Charisi,S. O.. Thompsoo. E. 1. and Speijer. R. p.. 1997b.
Barium. SiO:-cxccssand P:0, as proxics ofbiologkal productivity
in the Middle Easl durin! lhe r-...Ioottne aOO!he lalest Paleoccnc
bcnthic eXlinction e\·clll. TCffil Nova. v. 9. pp. 95-99.
SchmilZ. B.. Malina. E. aOO \'00 Salis. K.. 1998.1lle Zumaya scclion
in Spain: A possible global str.atotypc scction for the SelaOOian
aOO Thanctian stages. Ncwslcllers on Straligraphy. v. 36. pp. 35
42.Schmilz. B., Plljalte. V. and Núño-Bctclu. K .. 2001. Climate aOO
sea·le ...el perlUrbalions during lhc Initial Eocene Thermal
Maximum: c...idcnce fmm silicidastic units in (he Basque Basin
(Ermua. Zumaia and Trdb.1kua Pass). noT1hem Spain. ralaeo
geogrdphy. Pal¡Il..-oclilll:lIOlogy. Palaeoecology. v. 165 pp. 299·
320.Seilacher. A.. 1962. P;llellntological Sllldie.~ on turbidite scdilllcnlation
and cro~iun. JOllrnal ofGcology. v. 70. pp. 227·234.
Smil. J. ¡lIld Ten K¡llc. W. G. 1982. Tr:lce·element p;.lllerns ;u Ihe
Crclaceousfl"cl1i:¡ry boundary: conscqucnccs of a large impacto
Crct¡lcCQlll> Resc:lrch. v. 3. pp. 307·332.
Solim¡UI. M. F. Hnd Ob¡¡idlllla. N. A.. 2010. Danian-Sel:lI1dian
transilion :It Gab:t1 cl.QreiY:1 scclion. Nile Vullcy (Egypl):
lilhoslratigraphy. bioSll':llÍgr.tphy. mincmlogy and gcochcmislry.
Ncucs Jahrbuch !lir Gcologie und p¡L1tiolllologic-Abllandlungcn.
.... 258. Pll. 1·30.
Spcijcr. R. 1'.. 2000. Tlle lale Paloocene C"'Clll and a polcntial precursor
comparcd: Firsl rcsults from Egypl. GFF. Y. 122. pp. 150·151.
Speijer. R. P.. 2003. Danian·Selandian sea·lc,"el change and biolie
cxcllrsion on lhe soulhcrn TClhyan margin (Egypt). In: \Ving. S.L..
Gingcrieh. 1'.1).• Sdunilz. B. nnd Th0111US E. (Eds.). C;lllSCS and
Conscquenccs ofGlobaJly Wann Climales in lhe Early Paloogenc.
llouldcr. Colorado. Goological Socicty ofAmerica Spe("ial Paper.
v. 3(i9. pp. 275·290.
Speijer. R. P. aOO Schmilz. B.• 1998. A bcnlhic foraminiferJ.1 record
of Palcoccnc sea-Ievcl changes and trophic condilions al Gebcl
A.... cina. Egypl. Palaeogeography. Palaeoclimatology.
Palacoccology. v. 137. pp. 79-101.
Sprong. L Speijcr. R. 1'. and Sleurb:lut. E.. 2009. Biostratigr.lphy of
lhe OanianlSclandian transition in the southem Telhys- Spccial
reference lO Ihe Lowest ÜCCUITCOCC of planktie foraminifera
IgOri/lfl (l/l~(Jri. Gt.'Ologk-d Acta..... 7. pp. 63-77.
SleurbauI. Eh 1998. High'I\"~lution holuslraligraphy of MidJle
l'alcoccnc to Early Eoccnc strala of Belgium aOO adjacent are.L'>.
r-dl3COOlographiC""J.. Ab!. A. v. 247. 5-6. pp. 91-156. Slungan.
IH«tIlfwr 1011
Steurb3ul. E. and S7Irál:os K.. 2008. DanianlSclandi3n boundarycrileria and Nonh Sea Basin - Telhy, correlations oo!>Cd on
l'ak:areous nanoofossil and foraminifcl"'Jl IrcOOs in SW France.Marine Micropalcootology. Y. 67. pp. 1-29.
Steurbaul. E.. Dupuis. c.. Arenillas. l.• Molina. E. and M:ltmati. M.F..200:1.1lJc Kala;¡t Senan SI..'(:lion in central Tunisia: A potcnlialrcfercoce sccljon for lhe D:lni;¡,I!ScI:mdi:m bound;¡ry. GFF. y. 122.
pp. 158-160.Ten K:llc. W. G alld Sprcllgcr A., 199]. Orbital cyclicilies aboye :lOd
bclow Ihe CrelaceouslPalcogcne boundary al Zumaya (N o5l>:I;n).AgOSl :md Relleu (SE Spain). Scdimenlary Gcology. Y. 87. pp.69-10l.
Thomas. E .. 2005. Bcnlhic foraminifcra :md Early Eocenehypenhcnnal cvcnt~ (SE Allantic ÜCC:IO). Gcologil,:al Socicly uf
America. Alhlr:lcts ""ilh Programl>. ]7(7):"1].1ñom~n. E.. 1m. C:l.1careous nannofossil Sll"'Jligraphy across the
D:mianlSclaOOian bouOO:uy in Dcnmar\:. GFF. y. 116. pp. 65-67.
Thomscn. E. aOO Hcilmann-Clauscn. c.. 1985.1be Danian/SelaOOianbl:MJOdary al Svej~lrup wilh rcmar!:s 00 lhe biO'>lr..tigraphy of lhe
boundary in westem Denmar!:_ Bullelin ofthe Gcological SociclYof Dcnmar!:. v. ]]. pp. 341-362.
V:m Inerbccck. L Sprong. J., Dupujs. C .. Spcijcr. R.P. ¡md Slcufb:wl.
E.. 2007. Danian/Schmdian boundary slr:lligraphy and oslr.Jcodrccords from Sidi Nasscur. Tunisiu. M¡lrillc Microp¡t1eonlology.
v. 62. pp. 211·234.Van Vlic!. A.. 1982. Subm:lrine fans and associaloo dcposil' in Ihe
lowcr Teniary of GuipÚJ;Ctxl (nonhenl Sp:lin). Ph. D. thcsi~.
Lanbouy, ho~'cs(:hool Wageningen. 45 p.Varadi. F.. Runncgar. B. 300 Ghil. M.. 2003. Suce<:ssin~ rcfincmenl~
2-/J
in long-lerm integr.ilions of pl;metary orbits. A~lrophy~ical
Joumal. y. 592. pp. 620-630.V3rol. O.. 1989. I)alacocenc calcareous nannofossil bioslrnligr3phy.
In; CruJ(o J.A. aOO \'an Hed.• S.E. (fAs.). N3noofossill> and lheirApptit":llioos. British Micropalcoruological Sociely. v. 12. pp. 267
310.Ward. P. aoo Kcnncdy. K, G. 191)3. Maa.~lrichlian ammonile.., fmm
lhe Biscay rcgion (Fmnce. Sl'ain). Joumal of P:¡lconlology. v.
67. pp. l-SR.We.~lerhold. T.. Riihl. U.. Ram,!.. Forn¡lciHri. E.. MOllechi. S.. Reale.
v.. Bowles. J. and Evans. 1-1. F.. 2008. ASlronomical c:llibmlionof the Pa1eocelle time. P:llacogeography. Palaeoclim:l1ology.Palat·oe(:ology. y. 257. pp. 377-403.
Weslerhold. T.. Rohl. U.. Donoer. B.. McCarren. H. K. :lOO bchos.J. C.. 2011. A complele high-rcsolulioo P::llcocene bcnlhic lotableisolope record for lhe cenlral Pacific (ODP Sile 1209).
Paleoccanograph)'. no. PA2216. 001: 1O.I029I2OIOPAOO2092.While. . J.. Lowell. B.. 1997. Mea\uring lhe pulse of ~ plume y,ith
the sedirnenlury record. N3lure. \'. 387. pp. 888~891.\Vicdmann. J.. 1986. Macm-in\'crtebrnlCS 300 lhe Crelaceou~eniary
boundary. In: Walliscr. O. (fA.). Glob.11 Bio·E\'cnlS. LecIUn: Notes
in E:lrth Scicnl,-e~. v. 8. pp. 397-409.Z:lchos. J. c.. Kroon. D. 3nd 25 olhers. 2OW. Elrly Cen07.0ic extreme
climalCS: '''lC Walvb Ridge lr.lIlSCCI. Proceooings of lhe Occ:!nDrilling Programo Leg 208. hll]l:lIwww-odp.larnu/edul
publ icalionsl208·1 R/208ir.hlrn.Ziegler. P. A.. 1990. Gcological Alias 01" Weslem Europe :md Ccnlrnt
Europe. 2nd Edilion. Shell lntern:l1iona!c PClroleum
MaalSChappij. B.V.. Den Ha.1g. 239 pp.
.' ....••~" ~
.' ~Membcrs of lhe r-.. leoccnc Worl:jng Group in fmm of lhe basal Sel:mdian oUlerop 31 h7urun Beach. Junc 2007. From left lO righl; RobenSpeijer. Jorindc Sprong. Enk lbomscn. Annc Clemmcnscn. Bill Bcrggren. Fernando Caballero. EUSloquio Molina. Xabier Oruc-Elxebarria.
M:uia Rose Pclriu:O. Aitor Payros. Ignacio Arenillas. Robcrt KIlO" VICtoriano Pujallc. Marie·Pierre Aubry. Birgcr Schmilz. Gilen Bcmaola.Maile Manín-Rubio. Simonc:lla MOIllochi. CI;¡us Heilmann-Clau"Cn. Elienne Sleumaut. and Christian Dupui~. Memben not shown in photoare: Laia AI~gre1. Eslibalil Apellani/_ Juan-Ignacio Bxet3. burne Dinares·Turell. Asier Hil;¡rio Orús. Sih'ia Ortiz 300 Kalharina \00 Salis.