geologic map of the mescal 7.5' quadrangle, pima and...
TRANSCRIPT
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26.5 ± 0.08 Ma
GEOLOGIC MAP SYMBOLSHorizontal bedding
Inclined beddingoOverturned beddingsInclined tectonic foliation¦Inclined eutaxitic foliation in tuffsnLineation defined by mineral alignment or elongationñStratigraphic up-direction defined by cross-beddingì
23
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Contact; dashed where approximately located, queried where location guessed@
marker bed
Normal fault showing attitude of fault surface (dashed where approximate; querried where guessed; dotted where concealed; ball and bar symbol on downdropped side)
quartz vein> > > > > > > > > > >felsic dikefold hinge line
GEOLOGIC MAP UNITS
Late Holocene alluvial deposits (< 100 yr)Qy£
Middle to early Holocene alluvial deposits (< 10 ka)Qy¢Late Pleistocene and early Holocene alluvial deposits (<10 to 250 ka)Qly
Late Pleistocene alluvial deposits (10 to 250 ka)Ql
Middle Pleistocene alluvial deposits (250 to 750 ka)Qm
Early Pleistocene alluvial deposits (750 ka to 1.6 Ma)Qo
Late Tertiary and Quaternary depositsQTsCaliche deposit at the base of the late Tertiary and Quaternary depositsQTc
Late Tertiary basin-fill deposits (quartzite-clast dominated)Tsq
Late Tertiary basin-fill deposits (granite- and quartzite-clast dominated)Tsg Late Tertiary basin-fill deposits (granite-clast dominated)
TsgqLate Tertiary basin-fill deposits (limestone-clast dominated)Tsl
Quartz-rich tuffTt¢
Siltstone and sandstoneTss
Porphyritic andesiteTaLower conglomerateTdclCarbonate-clast conglomerateTdcc
Conglomerate (Wakefield Canyon facies)TwUpper conglomerateTcuSiltstoneTs
Middle ConglomerateTcm
Red ConglomerateTKcr
Intermediate intrusive rockTKiFelsic intrusive rockTKfi
DioriteTYd
Bisbee GroupKbGlance ConglomerateKJc
Upper Paleozoic sedimentary rocks, undivided¼l
Earp Formation³Pe
Horquilla Limestone³hEscabrosa LimestoneMeDistinctive chert layer in the Escabrosa LimestoneMec
Upper Martin FormationDmu
Martin FormationDm
Abrigo Formationºa
Bolsa Quartziteºq
Hematite-stained, red, coarse-grained graniteYgaMedium- to fine-grained graniteYgm
Coarse-grained graniteYg
Pinal SchistXp
Quaternary Deposits
Quaternary and Tertiary Deposits
Late Tertiary Deposits
Tertiary Sedimentary and Volcanic Rocks (Pantano Formation)
Tertiary or Cretaceous Sedimentary Rocks (Fort Crittenden Formation?)
Tertiary or Cretaceous Intrusive Rocks
Tertiary or Proterozoic Intrusive Rocks
Mesozoic Rocks
Paleozoic Rocks
Middle Proterozoic Intrusive Rocks
Early Proterozoic Metamorphic Rocks
MAP EXPLANATION
Tt£ Sanidine-rich tuff
GEOLOGIC MAP OF THEMESCAL 7.5' QUADRANGLE,
PIMA AND COCHISE COUNTIES,ARIZONA
November, 2001Arizona Geological Survey Digital Geologic Map 9
citation for this map:Skotnicki, S.J., 2001, Geologic map of the Mescal 7.5' quadrangle, Pima and Cochise Counties, Arizona:
Arizona Geological Survey, Digital Geologic Map 9 (DGM-09), 2 Adobe PDF files (1 plate), layout scale 1:24,000.
Research supported by the Arizona Geological Survey and the U.S. Geological Survey, National Cooperative Geologic Mapping Program,under USGS award #00HQAG0149. The view and conclusions contained in this document are those of the author and should not be
interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government.
Not to be reproduced for commercial purposes
BySteven J. Skotnicki
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SAGUARONATL.
MON.
CORONADONATL.
FOREST
FORESTNATL.
CORONADO
NATL.
FOREST
CORONADO
Benson
Tucson
1n
Galleta Flat West
Rincon Peak
Mount Fagan
Vail
The Narrows
Green Valley
MescalMAP AREA
INDEX MAP OF THE CIENEGA GAP AREAShowing the location of the map area in relation to Pima and Cochise Counties, Arizona, and the greater Tucson area
Arizona Geological SurveyDigital Geologic Map 9, Plate 1 of 1
Arizona Geological SurveyDigital Geologic Map 9, Plate 1 of 1
548000
548000
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3528000 3528000
3530000 3530000
3532000 3532000
3534000 3534000
3536000 3536000
3538000 3538000
3540000 3540000
110º 22'30"32º 00'
32º 00'110º 30'
110º 30'31º 52'30"
31º 52'30"110º 22'30"
N
1 0 1 Miles
1000 0 1000 2000 3000 4000 5000 6000 7000 Feet
1 0 1 Kilometers
R. 18 E. R. 19 E.
T. 17 S.T. 18 S.
T. 16 S.T. 17 S.