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Preface and Introduction

iii

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Preface and Introduction

iv

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e&7&''AB$ +"#$ ,'3#,B$ +8<#,$ &(0$ '(/'0#(/#,$ )*$ ,#/+)1$ /)--&<,#$ #4#(+,$ &1#$ 6#(#1&--8$ 4#18$,'%'-&1$@=&11&/#0)$KddNU$k1&,+#-$#+$&-:$LWWKA:$!"',$'%<-'#,$/)%%)($*&/+)1,$+)$2#$1#,<)(9,'2-#:$ D1&4'+8$ *)1/#$ '+,#-*$ %&8$ /&.,#$ 4)-/&()$ ,<1#&0'(6$ &(0$ +#(,')(&-$ *-&(59,-'<$ &-)(6$0',/1#+#$0#+&/"%#(+$,.1*&/#,$@[#-&(#8$g$[#(-'(6#1$KdddU$4&($m85$0#$J1'#,$#+$&-:$KddYU$\)16'&$#+$&-:$LWWWA:$!"#,#$*)1/#,$&1#$%)1#)4#1$2'&,#0$28$0'5#K$'(+1.,')(,$+"&+$(./-#&+#$'($,7&1%,$&(0$1'*+$3)(#,:$e'6"$%&6%&+'/$)1$"801&.-'/$<1#,,.1#,$7'+"'($1'*+$3)(#,$%&8$<.,"$&$ 4)-/&()$ ,#6%#(+$ ,#&7&10$ &(0$ +".,$ +1'66#1$ 0f/)--#%#(+$ )*$ ".6#$ 4)-/&('/$ ,#/+)1,$@H'#2#1+$KdZNU$m&-5#1$KddLU$>4#1,)($KddOU$S-,7)1+"$g$J)'6"+$KddPA:$\&,#0$)($(.%#1'/&-$/&-/.-&+')(,$7#$5()7$+"&+$&$4)-/&()$',$'($/1'+'/&-$2&-&(/#$)*$'+,$-)&0B$'(+1.,')(,$&(0$+"#$%#/"&('/&-$ <1)<#1+'#,$ )*$ +"#$ 1)/5,$ @['#+#1'/"$ KdZZU$ >4#1,)($ KddOA:$ >(+1.,'4#$ 0)%'(6$'(/1#&,#,$+"#$'(,+&2'-'+8$)*$4)-/&('/$*-&(5,B$7"'/"$&1#$+1'66#1#0$+)$*&'-$28$#:6:$#&1+"T.&5#,$&(0$+1#%)1,B$*&.-+$1#&/+'4&+')($)1$)4#1,+##<#('(6$@J)'6"+$g$S-,7)1+"B$LWWWA:$[#/1#&,#$)*$+"#$ /)"#,')($ &(0$ '(+#1(&-$ *1'/+')($ /)#**'/'#(+$ )*$ 1)/5,$ 28B$ #:6$ &-+#1&+')($ )1$ "'6"$ <)1#$<1#,,.1#,B$#&,#$*&.-+$*)1%&+')($@>4#1,)($KddOA:$!"#1#*)1#B$+"#$0',+1'2.+')($)*$7#&5$-&8#1,$'(,'0#$ &$ 4)-/&()$ )1$ #&,8$ 0#*)1%&2-#$ ,.2,+1&+.%$ ',$ )*$ '%<)1+&(/#B$ *&/'-'+&+'(6$ 4)-/&()$0#*)1%&+')($&(0$,#/+)1$/)--&<,#$@n&5&%.1&$KdZWU$=-&6.#$g$[#(-'(6#1$KddNA:$$H'(/#$7#&5$%&+#1'&-,$*)/.,$+"#$4)-/&()$,+1&'(B$2.+$+"#$4)-/&()$0#*)1%&+')($0'1#/+,$0'5#$'(+1.,')(,B$7"'/"$&6&'($&-+#1,$+"#$,+1#,,$*'#-0B$&$,+#&08$,+1#,,o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

1 Dikes are thought to propagate as magmatic pressure-driven, liquid-filled fractures. They are thus orientated perpendicular to the main extensional stress direction. Analyzing dike arrangements therefore allows to infer the paleostress environment of the time of emplacement. If the magmatic pressure does not exceed strength criteria of the rocks, the tendency to intrude existing planes of weakness is enhanced.

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[(#2%('B#R) ['#$ k&(&1#($ .%*&,,#($ ,'#2#($ >(,#-(B$ 6#5#((3#'/"(#+$ 0.1/"$ #'(#$ ,#"1$ -&(6#$ S(+7'/59-.(6,6#,/"'/"+#B$7)2#'$&--#$ >(,#-(B$&.p#1$_&$D)%#1&B$ '($0#($ -#+3+#($OWWW$ j&"1#($&5+'4$7&1#($@H/"%'(/5#$KddNA:$D#7&-+'6#B$3.1$H##$6#1'/"+#+#$q!r-#1aB$)*+$h2#1$#'(#($k'-)%#+#1$+'#*$ .(0$ %#"1#1#$ s#"(#15'-)%#+#1$ -&(6B$ ,'(0$ &($ J.-5&(6#2r.0#($ &--6#%#'($ r.p#1,+$&.**&--#(0:$Q.*$ 0#($ k&(&1#($ 2#6&(($ 0'#$ [',5.,,')($ h2#1$ 0'#$ S(+,+#".(6$ ,)-/"#1$ %)1<")-)6',/"$&.**r--'6#1$ k&19r"(-'/"#1$ !r-#1$ ,/")($ 2#'$ Q:4:$ e.%2)-0+$ @KZKNA:$ m#('6#$ j&"1#$ ,<r+#1$#(+21&((+#$0'#$2',$"#.+#$&(0&.#1(0#$[',5.,,')($3.$'"1#1$S(+,+#".(6I$_f)<)-0$4)($\./"$0#*'('#1+#$ KZLO$ 0#($\#61'**$ q=&-0#1&a$ @S1"#2.(6,51&+#1AB$7r"1#(0$="&1-#,$ _8#--$ @KZOOA$#"#1$S1),')($&-,$e&.<+.1,&/"#$*h1$0'#$S(+,+#".(6$0#1$=&-0#1#($4)($!&2.1'#(+#$@_&$;&-%&A$.(0$_&,$=&`&0&,$@!#(#1'*#A$0#.+#+#:$Q./"$&(0#1#$61)p#$%)1<")-)6',/"#$H#(5#(B$7'#$0&,$^1)+&4&+&-$'%$Hh0),+#($!#(#1'*#,$7.10#($0.1/"$S1),')($#15-r1+$@F1'+,/"$.(0$]#',,$KZPZA:$S1,+$/&:$".(0#1+$j&"1#$,<r+#1$#17r6+$\1&4)$@KdOLB$KdPLAB$0'#$,+#'-#($1'#,'6#($H#(5#($0#1$_&,$=&`&0&,$=&-0#1&B$,)7'#$0'#$!r-#1$4)($^1)+&4&$.(0$Dhi%&1$&.*$!#(#1'*#$5t((+#($0&,$]#,.-+&+$4)($61&4'+&+'4#($\-)/51.+,/".(6#($,#'(:$J'#-*&/"$7.10#$0'#$0#1&1+$5h"(#$e&(691.+,/"9e8<)+"#,#$ &(6#37#'*#-+B$ 0&$ #,$ .(%t6-'/"$ ,/"'#($ 0&,,$ 6&(3#$ J.-5&(*-&(5#($ '(,$V##1$,+h13#($5t((+#(:$$S1,+$,#'+$0#%$2#3#.6+#($Q221./"$0#1$V).(+$H+:$e#-#(,$n)10*-&(5#$'%$j&"1#$KdZW$@_'<9%&($g$V.--'(#&.E$KdZLAB$2#6&(($%&($0'#$D#*&"1$4)($F-&(5#(5)--&<,#(B$2#'$0#(#($,'/"$.:&:$ V&,,#(2#7#6.(6#($ %#"1#1#1$ k.2'55'-)%#+#1$ #1#'6(#(B$ 3.$ .(+#1,./"#($ .(0$ 3.$4#1,+#"#(:$ H#'+"#1$ %#"1#($ ,'/"$ e'(7#',#$ 0&1&.*B$ 0&,,$ *&,+$ &--#$ )3#&(',/"#($ J.-5&(#$7r"1#(0$ '"1#,$ 1&,/"#($ Q.*2&.,+&0'.%,$ 0#*)1%'#1+$ .(0$ 0#,+&2'-','#1+$ 7#10#($ .(0$ &($'"1#($F-&(5#($#<',)0',/"$5)--&2'#1#($@3:\:$[.**'#-0$#+$&-:$KdZKU$H'#2#1+$KdZNU$e)-/)%2$g$H#&1-#$KdZNU$V))1#$#+$&-:$KddNA:$H)$3#'6#($YOX$0#1$Q(0#(4.-5&(#$h2#1$LBO$5%$et"#$e'(7#',#$&.*$#'(,+'6#$F-&(5#(5)--&<,#$@F1&(/',$KddNA:$=&:$KWW$H/".++,+1)%&2-&6#1.(6#($c$1#,.-+'#1#(0#$Q2-&6#1.(6#($4)($F-&(5#(5)--&<,#($c$7.10#($.%$0'#$T.&1+r1#($J.-5&(#$j&<&(,$ '0#(+'*'3'#1+$ @>()5./"'$ KdZZA:$ [1#'$ 61)p#$ F-&(5#(5)--&<,#$ 0#,$ LW:$ j":$ 7.10#($&--#'(#$ 4)($ k&%/"&+5&$ 2#,/"1'#2#($ @\#-).,)4$ KddNA:$ u2#1$ YW$ 4)-.%'(t,#$ ,.2%&1'(#$e&(61.+,/"9Q2-&6#1.(6#($ 7.10#($ .%$ 0'#$ e&7&''&(',/"#($ >(,#-($ 5&1+'#1+B$ 3:!:$ h2#1$LWW$5%$ -&(6$ 2#'$ 2',$ OWWW$5%l$ J)-.%#($ @V))1#$ #+$ &-:$ KddNA:$ Q--$ 0'#,#$ n&/"7#',#$)**#(2&1#($7'#$6#6#(7r1+'6$>(,+&2'-'+r+$.(0$k)--&<,6#*&"1#($&($J.-5&(#($,'(0:$v(+#1,./".(6#($0#,$V##1#,2)0#(,$'%$]&.%$0#1$k&(&1#($5)((+#($61)p#$e&(61.+,/".(96#($@KWM9KWN$5%lA$('/"+$(.1$&($0#($F-&(5#($0#1$r-+#1#($@KO9LW$V&AB$,)(0#1($&./"$&($0#($()/"$&5+'4#($>(,#-($&.*3#'6#(B$0)1+$%'+$#'(#1$%'++-#1#($er.*'65#'+$4)($#'(#%$e&(61.+,/"$<1)$KLO9KYW$5&$@k1&,+#-$#+$&-:$LWWKB$V&,,)($#+$&-:$LWWLA:$j.(6#$e&(61.+,/"&2-&6#1.(6#($4)1$n)109!#(#1'*#$-&,,#($4#1%.+#(B$0&,,$V&,,#(4#1-&6#1.(6#($0#($J.-5&(5)%<-#E$&./"$"#.+#$()/"$4#1r(0#1($@m&++,$g$V&,,)($LWWKA:$Q./"$&($_&(0$%#"1#($,'/"$0'#$e'(7#',#$&.*$#<',)0',/"$7'#0#15#"1#(0#$F-&(5#(5)--&<,#$@3:\:$n&4&11)$g$=)#--)$KdZdU$=&11&/#0)$KddNU$eh1-'%&(($#+$&-:$KdddA:$$

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Preface and Introduction

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Part I. Chapter 1

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Part I. Chapter 1

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Part I. Chapter 1

3

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4

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Chamber height(0.5-6 cm)

Chamber radius (6-12 cm)

Volume and pressureof the reservoir

Balloon

a

Chamber depth below summit (5-15 cm)

Slope angle

5 cm

Volcanic edifice

(sand or flour)

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Inflation of a reservoir beneath a plateau

Inflation of a reservoir beneath a cone

Pure doming

16 cm

10 cm

Initial stage

10˚

16 cm

12 cm

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Part I. Chapter 1

8

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Part I. Chapter 1

9

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Part I. Chapter 1

10

Peripheral circumferential faults (diameter)

Ring fault (diameter)

Subsidence at ring fault

Balloon (diameter)

5 7 9 11 13 15Chamber depth below surface (cm)

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Part I. Chapter 1

11

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Part I. Chapter 1

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37

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4#)343%Q)*+",/+%5"00/-0%6)X74%34*%T),34D%A,"B"%",3%94,)%SW/B;%IU;%H"/,*2%1"0"*$/+%",3%

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T"##"+43)%IZZLU;%

15˚W

La Palma

Gomera

Tenerife

Gran Canaria

Fuerte

vent

ura

Lanzarote

Hierro

17˚W

100 km

28˚N

30˚N

Santa Cruz

N

10 km

Anaga

Roque delConde

Güimar

Orotava

Teno

Las Cañadas

Caldera

Canary Islands

AFRICA

28˚15'N

16˚45' W 16˚30' W

28˚30'N

Primary structural axes of Tenerife

Older / secondary structural axes

Landslide paleo-scarp

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%

Ma

7

6

El PalmarFormation

CarrizalesFormation

Los GigantesFormation

Construction Destruction Dike swarms Max. e [%] of dikes

ConcentricRadial

Mazca RiftTeno Bajo Rift

8337

41?19

ConcentricRadial

Mazca RiftTeno Bajo Rift

Mazca RiftTeno Bajo Rift

NE-SW?

Carrizales Collapse

Los Gigantes Collapse

2810

Unconformity-1

Unconformity-2

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%

2 km

N

Mazca Santiago del Teide

Teno Alto

Teno Bajo

LosCarrizales

Buenavista del Norte

A T L A N T I C O C E A N

A

C

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F

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ba

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Scarp-1

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- 15- 20- 25- 30

Isolines of Teno dike density (in %)

< 2

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- 4

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Photolineaments

Dikes (measured in field)

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50

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/,$#7343%4##"$/+"**2D%5"/,*2%8"#"**4*%$)%$:4%5"/,%-#"+$7#4%3/#4+$/),%07##)7,3/,B%$:4%0+"#8;%

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%

II

II

II

I

II

I

I I I I

Dikes

Fractured dike

1000

700

Los Carrizales

800

500

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Crashed rocksSmall-scale fractures

50 cm

50 cm

2 km

NMazca

A T L A N T I C O C E A N

II

IIIII

II

II

IIII

I

NE

NE

CF

LGF

EPF

a

b50 m

distance

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54

Z^%3/.40D%[I%3/.40%P/$:%",%"Q4#"B4%Mwb;M%5%0:)P%"%,)#$:4"0$c0)7$:P40$%4R$4,0/),%)-%

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7,+),-)#5/$2;%9)P"#30% $:4%,)#$:4#,% 0:)#4*/,4D% $:4%X7",$/$2%)-%3/.40% $:"$%+/#+750+#/140%

$:4%0+"#8%)-% $:4%04+$)#>+)**"8040%34+#4"040% S+)58"#4%8#)-/*4%EUD%P:/*4%$:4%fIJbq%94,)%

]"e)%6/-$% $#4,3%8#4Q"/*0% S8#)-/*4%=U;%H)#4)Q4#D%3/.40%/,%$:4%*"#B4%Q"**42%)-%F*%!"*5"#%"#4%

"*0)%B4,4#"**2%)#/4,$43%+)58"#"1*4%$)%$:4%94,)%]"e)%6/-$%x),4D%07BB40$/,B%",%4R$4,0/),%

3/#4+$43%,)#$:4"0$c0)7$:P40$D%$:4#4%0$/**%4R/0$/,B%"-$4#%$:4%17*.%)-%$:4%F*%!"*5"#%W)#5"$/),%

:"3%144,%458*"+43;%

Profile D

Profile B

Profile A

Profile C

n=90D=18F=72

F > D

n=164D=63F=101

F > D

n=149D=117F=32

D > F

n=44D=33F=11

D > F

n=33max. dens.=18.97 (at 96/ 0)

n=11max. dens.=15.11 (at 90/ 0)

n=33; 36 classesl.p.: 8.00 Values, 24% of all

n=117max. dens.=12.67 (at 96/ 0)

n=18max. dens.=10.94 (at 90/ 0)

n=63max. dens.=11.84 (at 72/ 0)

n=63; 36 classesl.p.: 8.00 Values, 12% of all

n=18; 30 classesl.p: 4.00 Values, 22% of all

n=117; 36 classesl.p.: 24.00 Values, 20% of all

n=101max. dens.=8.12 (at 120/ 9)

n=72max. dens.=8.81 (at 13/ 9)

n=32max. dens.=9.96 (at 113/ 9)

n=101; 36 classesl.p.: 12.00 Values, 11% of all

n=72; 36 classesl.p.: 9.00 Values, 12% of all

n=32; 30 classesl.p.: 5.00 Values, 15% of all values

n=11; 30 classesl.p.: 3 Values, 27% of all values

Dike data plotted as polesto planes(Contouring 10 Bins)

Fracture data plotted as poles to planes(Contouring 10 Bins)

Rose diagram Bi-directional(l.p. - largest petal)

Rose diagram Bi-directional(l.p. - largest petal)

Dikes Fractures

N N N N

NNNN

N N N N

NNNN

!

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55

"#$%&'! 3! :*4&#$ H('+$ ()7$ H-+F&"8#$ H('+C_! R24.&7*^#$ H-"O+2*&")#A$ -"#+$ ()7$ 2")*"8-$ 7&('-(.#$ 3"-$ 7&Q+#$ ()7$3-(2*8-+#$ &)$>$H-"3&1+#$ *4-"8'4$M+)"$.(##&3$ &)7&2(*+7$(#$D$ W$ 6$ :#++$,&'<$\$7C<$)`$)8.E+-$"3$.+(#8-+.+)*#A$]`7&Q+#A$,`3(81*#$:G4&*+$2&-21+#C$()7$3-(2*8-+#$:E1(2Q$7"*#C<$$$

$

Profile G

Profile F

Profile E

Profile H

Profile I

n=54D=39F=15

D > F

n=36D=22F=14

D > F

n=41D=29F=12

D > F

n=129D=96F=33

D > F

n=84D=64F=20

D > F

n=96max. dens.=10.93 (at 30/ 0)

n=29max. dens.=12.72 (at 48/ 0)

n=39max. dens.=15.95 (at 24/ 0)

n=22max. dens.=11.04 (at 36/ 0)

n=15max. dens.=14.68 (at 18/ 0)

n=14max. dens.=14.74 (at 19/ 0)

n=12max. dens.=16.23 (at 78/ 0)

n=33max. dens.=11.97 (at 90/ 0)

n=64max. dens.=11.19 (at 30/ 0)

n=20max. dens.=12.69 (at 36/ 0)

n=39; 36 classesl.p.: 7 Values, 17% of all

n=32; 30 classesl.p.: 3 Values, 13% of all

n=29; 30 classesl.p: 5 Values, 17% of all

n=15; 30 classesl.p.: 4 Values, 26% of all

n=14; 30 classesl.p.: 3 Values, 21% of all

n=12; 30 classesl.p.: 3 Values, 25% of all

n=33; 36 classesl.p.: 4 Values, 12% of all values

n=96; 36 classesl.p.: 11 Values, 11% of all

n=64; 30 classesl.p.: 10 Values, 15% of all

n=20; 30 classesl.p.: 4 Values, 20% of all

N N

NN

N N N N

NN

N N

NNNN

NNNN

Dike data plotted as polesto planes(Contouring 10 Bins)

Fracture data plotted as poles to planes(Contouring 10 Bins)

Rose diagram Bi-directional(l.p. - largest petal)

Rose diagram Bi-directional(l.p. - largest petal)

Dikes Fractures

$$

%

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Part II. Chapter 4

56

0.5 m

N S

0.3 m

W E

NW SE

0.5 m

0.5 m

NW SE

W E

3 m

a b

c

d

e fN S

LGF

CF

Maz

ca r

ift d

ikes

Scoria/lapili

Debrite

Multiple dike

Dike

Sill

CF picrites

123

4

DikeDike

Faults

Debrite

Slickensides

!!

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Part II. Chapter 4

57

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1 m

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70

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Needle

Colored water

Lubricant

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Sand

Direction of creep

PVC-plate

'

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13

2

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"Dikes"

Injection point

Creeping sector

Direction of creep

a

c

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d

g

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Along strike axis

Acrossstrikeaxis

GELATIN RIDGE

High friction surface

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73

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20

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n=40

Unstable - dike at interface

20

40

1 2 3 4 5 axis No.6

n=78

Unstable - dike in unstable sector

20

60

1 2 3 4 5 axis No.

n=37

Unstable - dike in stable sector

20

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n=43

in %of experiments

in %of experiments

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diffu

se r

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Direction of main volcano growth(small arrow: minor intensity)

Direction of sector creep Inferred transition of stable edifice/creeping sector

Dikes(dark shading: strong rifting)

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Part II. Chapter 6

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#.2"?%&&%O0*J")=;<$)-<";I//)$0>2;")"M$2;2*<)<0%*")<"<.2")**I)&"-%*?2$2*-2"%?"<.2"P/2$0-)*"Q2%M.@;0-)&"5*0%*"6?)&&"/22<0*J9"0*"R2>2/=2$"7888!",)*":$)*-0;-%!"5,P"

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#.0;")=;<$)-<"J%2;"%A2$"<.2"/)0*"M%0*<;"%?")"M$2;2*<)<0%*")<"<.2"XI)+$2**0)&"-%*?2$2*-2"":%I$<."Z*<2$*)<0%*)&"R@12"Y%*?2$2*-2"6ZRY^9"0*"_I*2"788D!"RI$=)*!",%I<."P?$0-)"

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P*"0*<2$*)<0%*)&"O%$1;.%M"?%-I;0*J"%*"bW2O"<2-.*0XI2;"0*")*)&%J"/%+2&0*Jc"O);".2&+")<"<.2"Q2%:%$;-.I*J;d2*<$I/"6Q:d9"`%<;+)/"0*"T1<%=2$!"788D"

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AGU 2001 fall meeting: EOS, Transactions of the American Geophysical Union 82(47): 1299 (

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Acknowledgements ":0$;<&@!" /@" M$%?%I*+" <.)*1;" J%" <%" /@" ;IM2$A0;%$!" `$%?B" 3)*;45&$0-." ,-./0*-12B" 32"2*J)J2+"/2" 0*"<.2"?0$;<"M&)-2!"10*+&@"0*<$%+I-2+"/2"0*<%"<.2"?02&+"%?"Q$)*"Y)*)$0)")*+"#2*2$0?2!")*+"J)A2"I*<02+";<0/I&)<0*J"+0;-I;;0%*;!";IJJ2;<0%*;!")*+"BBB"-$0<0XI2B"W2K<"%*"/@" &0;<"%?" <.)*1;")$2" <.2"-%&&2)JI2;"%?" <.2"+2M)$</2*<" )<"QSTLP(!" Z" )MM$2-0)<2+")*+"&)$J2&@" =2*2?0<2+" ?$%/" &%<;" %?" +0;-I;;0%*;" O0<." <.2/!" 2;M2-0)&&@" L)<<.0);" 3%$<!" #.%$"3)*;<22*!"()&?",2@?$02+!"P&2K)*+2$"f2&%I;%A!"`)I&"AB+B"f%%J)$+!"Y)$;<2*",-.0$*0-1")*+"`2<2$" ,)-.;B" Z"M$%?0<2+" ?$%/"*I/2$%I;" +0;-I;;0%*;"%*" A)$0%I;"%--);0%*;"O0<."`2<2" a0M4/)*!" :)&1" P/2&I*J!" _%.*" ,<0K!" ()/" U20*=2$J2$!" P10$)" #)1)+)!" P*+$2);" h&iJ2&!" _I)*"Y)$&%;"Y)$$)-2+%!"R%IJ"L);;%*!"')&2$0%"P-%-2&&)")*+"R[%$+[2"Q$I[0-B",M2-0)&"<.)*1;"J%"<%"')&"#$%&&"?%$"2KM2$0/2*<)&"-%4O%$10*J")*+"-%*[%0*<&@"?02&+"O%$1"%*"<.2"Y)*)$@"Z;&)*+;!")*+"?%$"<.2"<2-.*0-)&"+0;-I;;0%*;"O2".)+"%*"`&)@)"+2&"Y.0XI);B"T*"#2*2$0?2"Z"<.)*1"_BLB"W)A)$$%"6)-<I)&&@"`2M29"?%$";.%O0*J"/2"<.2"0;&)*+")*+";.)$0*J".0;".)//%-1"O0<."bL02<4;-.@"<.2"-)<cB"`2M2"@"L2$-2+2;!"/I-.);"J$)-0);"M%$"AI2;<$)".%;M0<)&0+)+j"#.)*1;"J%"<%"<.2"/0*2$;")*+"J2%&%J0;<;"%?"Z#S(!"M)$<0-I&)$&@"(0-)$+%"f)&-2&&;")*+"_I)*"Y%2&&%B"T*"Q$)*"Y)*)$0)" Z")-1*%O&2+J2".2&M"=@"f2)<2"U2*;1%O;10!"h01%")*+"Q)=$02&&)!"L)*%&0*"ak%*!"_%;k" S;-I=)$" e" .0;" ?)/0&@!" ,2l%$" `)&/2$%" )*+" <.%;2" M&2*<@" 10&&2$4=22;" ?%$" )&&%O0*J"=@M);;B"L@"-%&&2)JI2;"0*"<.2"Q$)+I)<2",-.%%&")*+");;%-0)<2;")$2"<.)*12+"?%$"+0;-I;;0%*;!"/)*I;-$0M<" M$%%?$2)+0*J!" +)<)" -%*A2$;0%*;" )*+" &%<;" %?" -%??22" =$2)1;!" *)/2&@" ()&?",-./0+<!" fI++@" h$);<2&!" a%<.)$" ,-.O)$>1%M?!" W0-%" 5$=)*;10!" L0-.)2&" P=$)<0;!" '%&12$"h)$M2*!" f)$=)$)" #20-.2$<!" ,<2?)*" 5$M0!" P&2K)*+2$" ,-.0/)*;10!" PK2&" L%.$!" _2**@" h)*4+0)*%!"f$0<<)"a0;;0*)!"(0-.)$+"32)<.!"_m$J"Q2&+/)-.2$!",I;)**2":$2<>+%$?!"W0-%&2",<$%*-01")*+"P*J2&01)" ,-./0+<B"L@" -$2+0<;" J%" <%" ,)*+$)"O02" +);" f%&&O2$1" ?%$" =20*J"/@" %??0-2"/)<2!" )*+" ;.)$0*J" <%*;" %?" -.%-%&)<2;B" ,M2-0)&" <.)*1;" J%" <%" f2)<$0-2" Y)0&&2)I" ?%$" )*@";IMM%$<!"M)<02*-2!"?I*")*+")&;%"?%$"$%%/";.)$0*JB"`Y4/)*"P&2K)*+2$"32I;2$"A2$@"/I-.".2&M2+"/2"<%"?0*J2$"M&2*<@"%?"-%/MI<2$"=IJ;B"RI$0*J"<.2";)/M&2"M$2M)$)<0%*"Z"=2*2?0<2+"?$%/" .2&M" =@" <$)0*22;" ,);-.)" ,<)I=)-.!" S&12" 3)*2*1)/M!" ,A2*" h$20*!" L)$&02;" S*J2&4/)**!"5<2"#.I$%O")*+"h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bR@*)/0-;"%?"Q&%=)&"Y@-&2;c" " 6R:Q" ,-./" 7\84^N9" )*+" ?%$" <.2" ?%&&%O0*J" <0/2" ?$%/" <.2" R:Q" J$)*<;" 6,-./"7\8gHH4D")*+",-./"7\8gHH479"<%"3B45B",-./0*-12B""#.0;"O%$1"O%I&+".)A2"=22*"M%%$2$"O0<.%I<"<.2"-%*<$0=I<0%*"%?"2)-."%?"<.2/B""

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