geology of california - california department of conservation · ey. g lt nes t e r mountains lt...
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SE
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EMERSON
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FAULT
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VALLEY
CREEK FAULT
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FAULT
FLT.
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MTNS
CALAVERAS
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CREEK
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HEALDSBURG
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ANDREAS
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F.
FLT.
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HONEYLAKE
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FAULT
THRUST
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COAST
LITTLESALM
ONFLT.
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PRISEVA
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ULT
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BARTLETTSPRINGS
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5
5
10
15
15
40
101
101
101
101
101
8
80
Bishop
Redding
San Francisco
Eureka
Fresno
Susanville
Ukiah
Bakersfield
Needles
San LuisObispo
El Centro
Nevada City
Sacramento
Monterey
SanBernardino
San Diego
Santa Barbara
Los Angeles
Placerville
Mount Whitney
O R E G O N
M E X I C O
N E V A D A
A
R
I
Z
O
N
A
SaltonSea
BristolLake
RogersLake
ClearLake
LakeTahoe
Clear LakeReservoir
EagleLake
Lake Almanor
GooseLake Upper
Lake
HoneyLake
MonoLake
Merced Rive r
San Joaquin River
Pit River
Tule R iver
Americ
anRi
ver
Feat
her Rive
r
Kaweah River
ShastaRiver
Calavera
s River
KlamathRiver
SanDiego River
Eel River
Susan Riv er
Stanis
laus River
Cosu
mnes Rive
r
Kings R iver
MokelumneRiver
Tuolumne River
Alamo
R
iver
Fresno Riv er
Yuba River
Trin
ityR iv
er
Amargosa
River
Sacrament o
River
Tule Ri ver
White River
Noyo Rive r
Mad River
Owens River
KernRiver
BigR iver
120°0'0"W
115°0'0"W
125°0'0"W
124°0'0"W
123°0'0"W
122°0'0"W
121°0'0"W
119°0'0"W
118°0'0"W
124°0'0"W123°0'0"W 122°0'0"W 121°0'0"W
120°0'0"W
117°0'0"W
117°0'0"W
116°0'0"W
116°0'0"W
115°0'0"W
40°0'0"N
38°0'0"N
36°0'0"N
35°0'0"N
32°0'0"N
42°0'0"N
41°0'0"N
41°0'0"N
40°0'0"N
39°0'0"N
39°0'0"N
37°0'0"N 37°0'0"N
33°0'0"N
32°0'0"N
119°0'0"W
118°0'0"W
34°0'0"N
33°0'0"N
38°0'0"N
36°0'0"N
35°0'0"N
34°0'0"N
125°0'0"W
42°0'0"N
SEAW
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PITAS POINT FAULTVENTUR A F.
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MALIBU COAST FAULT
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F.
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HILLS
SUPERSTITION
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SUPERSTITION
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BLUE CUT FAULT
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MOUNTAINPINTO FAULT
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FAULT
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FAULT
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NTA
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NORTHERN
DEATH
VALLEY
FAULT
Z ONE
GREENVILLEFAULT
5
5
10
15
15
40
101
101
101
101
101
8
80
Bishop
Redding
San Francisco
Eureka
Fresno
Susanville
Ukiah
Bakersfield
Needles
San LuisObispo
El Centro
Nevada City
Sacramento
Monterey
SanBernardino
San Diego
Santa Barbara
Los Angeles
Placerville
Mount Whitney
O R E G O N
M E X I C O
N E V A D A
A
R
I
Z
O
N
A
SaltonSea
BristolLake
RogersLake
ClearLake
LakeTahoe
Clear LakeReservoir
EagleLake
Lake Almanor
GooseLake Upper
Lake
HoneyLake
MonoLake
Merced River
San Joaquin River
Pit River
Tule R iver
Americ
anRi
ver
Feat
her Rive
r
Kaweah River
ShastaRiver
Calaver
as R iver
KlamathRiver
SanDiego River
Eel River
Susan Riv er
Stanis
laus River
Cosu
mnes Rive
r
Kings River
MokelumneRiver
Tuolumne River
Alamo
R
iver
Fresno Riv er
YubaRi
ver
Trin
ityR iv
er
Amargo sa
River
Sacramento
River
Tule Ri ver
White River
Noyo Rive r
Mad River
Owens River
KernRiver
BigR iver
124°0'0"W123°0'0"W
122°0'0"W
122°0'0"W 121°0'0"W
125°0'0"W
120°0'0"W
119°0'0"W
118°0'0"W
117°0'0"W
117°0'0"W
116°0'0"W
116°0'0"W
115°0'0"W
41°0'0"N
41°0'0"N
40°0'0"N
40°0'0"N
39°0'0"N
39°0'0"N
37°0'0"N
36°0'0"N
35°0'0"N
33°0'0"N
33°0'0"N
32°0'0"N
32°0'0"N
124°0'0"W
123°0'0"W
121°0'0"W
125°0'0"W
118°0'0"W
42°0'0"N
42°0'0"N
38°0'0"N38°0'0"N
37°0'0"N
36°0'0"N
35°0'0"N
34°0'0"N
34°0'0"N
120°0'0"W
119°0'0"W
116°0'0"W
Paleozoic metasedimentary rocks. Includes slate, sandstone, shale, chert, conglomerate, limestone, dolomite, marble, phyllite, schist, hornfels, and quartzite.
MESOZOIC
PALEOZOIC
PRECAMBRIAN
PLUTONIC ROCKSMIXED ROCKSMARINE SEDIMENTARY AND METASEDIMENTARY ROCKS
Cretaceous sandstone, shale, and conglomerate; minor non-marine rocks in Peninsular Ranges.
Limestone, dolomite, and marble, probably of Paleozoic or Mesozoic age.
Precambrian igneous and metamorphic rocks.
Gabbro and dark dioritic rocks;chiefly Mesozoic.
Paleogen
eNeogen
e CENOZOIC
Quatern
ary
VOLCANIC ROCKSNONMARINE (CONTINENTAL) SEDIMENTARY ROCKSMARINE SEDIMENTARY ROCKS
Neogene and Paleogene volcanic flows and ash deposits.
GENERALIZED GEOLOGIC UNITS
Quaternary and Neogene non-marine deposits.
Franciscan Complex metavolcanic rock.
Neogene sandstone and shale.
Quaternary surficial deposits. Quaternary glacial deposits. Quaternary volcanic flows and ash deposits.
Sandstone, shale, and minor conglomerate in coastal belt of northwestern California.
Franciscan Complex: Cretaceous and Jurassic sandstone with shale, chert, limestone, and conglomerate. Includes Franciscan melange.
Granitic and metamorphic rocks; mostly gneiss and other meta-morphic rocks intruded by granitic rocks. Mesozoic to Precambrian.
Undivided Mesozoic volcanic, meta-volcanic, and metamorphic rocks.
Ultramafic rocks; mostly serpentine.Minor peridotite, gabbro, and diabase; chiefly Mesozoic.
Granitic rocks; chiefly Mesozoic.
Paleogene sandstone and shale.
Fault − Solid where accurately located; dashed where approximately located; dotted where concealed; queried where uncertain. Arrows along fault indicate relative direction of lateral movement; ball and bar indicates downthrown side of normal fault.
Thrust fault − Solid where accurately located; dashed where approximately located; dotted where concealed; queried where uncertain. Teeth on upper plate.
Contact between geologic units
CaliforniaGeomorphicProvinces
Map Scale: 1:2,000,000
0 10050Miles
0 10050Kilometers
:Copyright © 2018 by the California Department of Conservation, California Geological Survey. All rights reserved. No part of this publication may be reproduced without written consent of theCalifornia Geological Survey.
“The California Department of Conservation makes no warrantiesas to the suitability of this product for any particular purpose.”
www.consrv.ca.gov/cgs Base Map Sources: U.S. Geological Survey, California Department of Fish and Wildlife, California Department of Transportation
A geologic map shows the distribution, relationship, and composition of earth materials including rocks and surficial deposits―such as sediments and landslides―on the earth’s surface. Each color on the map represents a different type or age of rock. Thick black lines represent the locations of faults.
Geologic maps help us understand the geologic history of an area, and to plan for the future. Geologists use the maps to interpret what resources might lie below the surface, such as oil and natural gas, groundwater, and mineral deposits. Geologic maps are also used to identify potential hazards such as landslides, volcanoes, earthquake faults, liquefaction zones, and tsunami hazard zones. Geologic maps are used in environmental and engineering studies to identify areas suitable for agriculture, urban development, and construction. They provide important information needed to build a safer and more sustainable world.
Geology of California
CALIFORNIA GEOLOGICAL SURVEYJOHN G. PARRISH, PH.D., STATE GEOLOGIST
STATE OF CALIFORNIA – EDMUND G. BROWN JR., GOVERNORTHE NATURAL RESOURCES AGENCY – JOHN LAIRD, SECRETARY
DEPARTMENT OF CONSERVATION – DAVID BUNN, DIRECTORMAP SHEET 57
GEOLOGY OF CALIFORNIA