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Legend

Earth's Tectonic Plates

Plates
Deep beneath California, the Pacific and North American Plates relentlessly grind past one another, straining or "loading" faults in the Earth's rigid crust above. The horizontal ("strike-slip") movement between these plates along the San Andreas Fault Zone is about 1.7 inches per year (40 mm/year), about as fast as your fingernails grow. At this rate, Los Angeles will be west of San Francisco in about 12 million years.
For more information: This Dynamic Earth

Plate Boundaries

Divergent

Transform

Convergent

Diffuse

Plate names

African Plate

Antarctic Plate

Arabian Plate

Australian Plate

Burma Plate

Caribbean Plate

Cocos Plate

Eurasian Plate

Indian Plate

Juan de Fuca Plate

North American Plate

Nazca Plate

Okhotsk Plate

Pacific Plate

Philippine Plate

Rivera Plate

Scotia Plate

South American Plate

Text 3D

San Andreas label

Cascadia label

Arrows 3D

Plates Legend

Profile

Geology of California
Preliminary integrated geologic map databases for California
The paper map of California (Jennings and others, 1977) is at a scale of 1:750,000. This map is available from the California Geological Survey (CGS). It is accompanied by a detailed explanatory text ( Jennings, 1985).
A digital representation of this map (Saucedo and others, 2000) is available from the CGS on a compact disc. The digital representation was produced as a cooperative venture between the USGS and the CGS over a period of several years in the late 1990s. Information for obtaining the CGS products can be found at: http://www.consrv.ca.gov/cgs/
Data from:
Western States: California, Nevada, Arizona, Washington, Oregon, and Idaho
Version 1.1
By: Steve Ludington, Barry C. Moring, Robert J. Miller, Paul A. Stone, Authur A. Bookstrom, David R. Bedford, James G. Evans, Gordon A. Haxel, Contstance J. Nutt, Kathryn S. Flynee and Melanie J. Hopkins
http://pubs.usgs.gov/of/2005/1305/
Google Earth Overlays
Tony Carrasco

Geologic Units

Cenozoic

Quaternary

Marine / Non-Marine Sediments

Qs
Extensive marine and nonmarine sand deposits, generally near the coast or desert playas.

Unknown Area Type
GM_LAYER = Unknown Area Type
GM_TYPE = Unknown Area Type
LAYER = Unknown Area Type
CAGEOL_DD_ = 12104
CAGEOL_DD1 = 12131
ORIG_LABEL = Qs
SGMC_LABEL = Qs2;0
UNIT_LINK = CAQs2;0
SOURCE = CA001
UNIT_AGE = Quaternary
ROCKTYPE1 = dune sand
ROCKTYPE2 = lake or marine deposit

Unknown Area Type
GM_LAYER = Unknown Area Type
GM_TYPE = Unknown Area Type
LAYER = Unknown Area Type
CAGEOL_DD_ = 12087
CAGEOL_DD1 = 12130
ORIG_LABEL = Qs
SGMC_LABEL = Qs2;0
UNIT_LINK = CAQs2;0
SOURCE = CA001
UNIT_AGE = Quaternary
ROCKTYPE1 = dune sand
ROCKTYPE2 = lake or marine deposit

Unknown Area Type
GM_LAYER = Unknown Area Type
GM_TYPE = Unknown Area Type
LAYER = Unknown Area Type
CAGEOL_DD_ = 11894
CAGEOL_DD1 = 12088
ORIG_LABEL = Qs
SGMC_LABEL = Qs2;0
UNIT_LINK = CAQs2;0
SOURCE = CA001
UNIT_AGE = Quaternary
ROCKTYPE1 = dune sand
ROCKTYPE2 = lake or marine deposit

ROCKTYPE2 = beach sand

Alluvium, lake, playa, and terrace deposits; unconsolidated and semi−consolidated. Mostly nonmarine, but includes marine deposits near the coast.

Lake, > 500 sq. mi.
GM_LAYER = Lake, > 500 sq. mi.
LAYER = Lake, > 500 sq. mi.
PERIMETER = 462 miles
ORIG_LABEL = Q
SGMC_LABEL = Q;0
UNIT_LINK = CAQ;0
UNIT_AGE = Pliocene to Holocene
ROCKTYPE1 = alluvium
ROCKTYPE2 = terrace

Lake, > 500 sq. mi.
GM_LAYER = Lake, > 500 sq. mi.
LAYER = Lake, > 500 sq. mi.
PERIMETER = 983 miles
ORIG_LABEL = Q
SGMC_LABEL = Q;0
UNIT_LINK = CAQ;0
UNIT_AGE = Pliocene to Holocene
ROCKTYPE1 = alluvium
ROCKTYPE2 = terrace

Lake, > 500 sq. mi.
GM_LAYER = Lake, > 500 sq. mi.
GM_TYPE = Lake, > 500 sq. mi.
LAYER = Lake, > 500 sq. mi.
ORIG_LABEL = Q
SGMC_LABEL = Q;0
UNIT_LINK = CAQ;0
UNIT_AGE = Pliocene to Holocene
ROCKTYPE1 = alluvium
ROCKTYPE2 = terrace

PERIMETER = 419 miles

Non-Marine Sediments

Qls
Selected large landslides, such as Blackhawk Slide on north side of San Gabriel Mountains; early to late Quaternary.

ORIG_LABEL = Qls
SGMC_LABEL = Qls;0
UNIT_LINK = CAQls;0
ROCKTYPE1 = landslide
ROCKTYPE2 =

Qg
Glacial till and moraines. Found at high elevations mostly in the Sierra Nevada and Klamath Mountains.

ORIG_LABEL = Qg
SGMC_LABEL = Qg;0
UNIT_LINK = CAQg;0
UNIT_AGE = Pleistocene
ROCKTYPE1 = glacial drift

Volcanic

Qrv
Recent (Holocene) volcanic flow rocks; minor pyroclastic deposits.

ORIG_LABEL = Qrv
SGMC_LABEL = QHv5;0
UNIT_LINK = CAQHv5;0
UNIT_AGE = Holocene
ROCKTYPE1 = rhyolite

ROCKTYPE1 = tephrite (basanite)
ROCKTYPE2 = basalt

ROCKTYPE1 = andesite

ROCKTYPE2 = dacite

Qrvp
Recent (Holocene) pyroclastic and volcanic mudflow deposits.

ORIG_LABEL = Qrvp
SGMC_LABEL = QHvp2;0
UNIT_LINK = CAQHvp2;0
ROCKTYPE2 = pumice

Qv
Quaternary volcanic flow rocks; minor pyroclastic deposits.

ORIG_LABEL = Qv
SGMC_LABEL = Qv8;0
UNIT_LINK = CAQv8;0

UNIT_AGE = Quaternary (0-4 Ma)

UNIT_AGE = Quaternary (1.5-2.5 Ma)

Qv?
Quaternary volcanic flow rocks; minor pyroclastic deposits.

ORIG_LABEL = Qv?
SGMC_LABEL = Qv7?;0
UNIT_LINK = CAQv7?;0

Qvp
Quaternary pyroclastic and volcanic mudflow deposits.

ORIG_LABEL = Qvp
SGMC_LABEL = Qvp5;0
UNIT_LINK = CAQvp5;0
ROCKTYPE2 = tuff

ORIG_LABEL = Qvp
SGMC_LABEL = Qvp4;0
UNIT_LINK = CAQvp4;0
ROCKTYPE2 = volcanic breccia (agglomerate)

ROCKTYPE2 = ash-flow tuff

Qvp?
Quaternary pyroclastic and volcanic mudflow deposits.

ORIG_LABEL = Qvp?
SGMC_LABEL = Qvp1?;0
UNIT_LINK = CAQvp1?;0

Pleistocene

Qpc
Pliocene and/or Pleistocene sandstone, shale, and gravel deposits; mostly loosely consolidated.

Area Features

ORIG_LABEL = QPc
SGMC_LABEL = QPOc;0
UNIT_LINK = CAQPOc;0
UNIT_AGE = Miocene to Pleistocene
ROCKTYPE1 = sandstone
ROCKTYPE2 = conglomerate

Tertiary

Pliocene

Marine Sediments

Sandstone, siltstone, shale, and conglomerate; mostly moderately consolidated.

ORIG_LABEL = P
SGMC_LABEL = PO;0
UNIT_LINK = CAPO;0
ROCKTYPE2 = mudstone

SGMC_LABEL = P1;0
UNIT_LINK = CAP1;0
UNIT_AGE = Pennsylvanian to Triassic
ROCKTYPE1 = limestone

UNIT_AGE = Paleozoic or Mesozoic
ROCKTYPE1 = phyllite
ROCKTYPE2 = marble

UNIT_AGE = Early to Late Permian
ROCKTYPE1 = slate
ROCKTYPE2 = graywacke

UNIT_AGE = Early Permian

Miocene

Sandstone, shale, siltstone, conglomerate and breccia; in part Pliocene and Oligocene.

ORIG_LABEL = M
SGMC_LABEL = MI;0
UNIT_LINK = CAMI;0
UNIT_AGE = Oligocene to Pliocene

Mc
Sandstone, shale, conglomerate, and fanglomerate; in part Pliocene and Oligocene.

ORIG_LABEL = Mc
SGMC_LABEL = MIc;0
UNIT_LINK = CAMIc;0
UNIT_AGE = Oligocene to Pleistocene

Oligocene

Sandstone, shale, and conglomerate; in part Miocene and Eocene.

ORIG_LABEL = O
SGMC_LABEL = OG;0
UNIT_LINK = CAOG;0
UNIT_AGE = Eocene to Miocene

Non-marine Sediments

Oc
Sandstone, shale, and conglomerate; in part Miocene and Eocene.

ORIG_LABEL = Oc
SGMC_LABEL = OGc2;0
UNIT_LINK = CAOGc2;0
UNIT_AGE = middle Eocene to early Miocene

UNIT_AGE = Oligoceneto Miocene

Oc?
A single small outcrop area in the Klamath Mountains. Most recently mapped as Pliocene to Pleistocene terrace alluvium, but could be as old as Oligocene

ORIG_LABEL = Oc?
SGMC_LABEL = OGc2?;0
UNIT_LINK = CAOGc2?;0
UNIT_AGE = Cretaceous(?) to Oligocene(?)
ROCKTYPE2 = sedimentary breccia

ORIG_LABEL = Oc?
SGMC_LABEL = OGc1?;0
UNIT_LINK = CAOGc1?;0
UNIT_AGE = Oligocene(?) to Pleistocene(?)
ROCKTYPE1 = sand
ROCKTYPE2 = gravel

Eocene

Shale, sandstone, conglomerate, and minor limestone; in part Oligocene and Paleocene.

ORIG_LABEL = E
SGMC_LABEL = EO;0
UNIT_LINK = CAEO;0
UNIT_AGE = Paleocene to Oligocene

Ec
Sandstone, shale, and conglomerate.

ORIG_LABEL = Ec
SGMC_LABEL = EOc2;0
UNIT_LINK = CAEOc2;0
UNIT_AGE = middle to late Eocene

UNIT_AGE = Eocene

Eocene-Paleocene

E-Ep
Shale, sandstone, conglomerate, and minor limestone; in part Oligocene and Paleocene.

ORIG_LABEL = E-Ep
SGMC_LABEL = EO-PN;0
UNIT_LINK = CAEO-PN;0
UNIT_AGE = Paleocene to middle Eocene

Paleocene

Ep
Sandstone, shale, and conglomerate; mostly well consolidated

ORIG_LABEL = Ep
SGMC_LABEL = PN1;0
UNIT_LINK = CAPN1;0
UNIT_AGE = Paleocene

UNIT_AGE = Late Cretaceous(?) to Eocene(?)
ROCKTYPE2 = siltstone

UNIT_AGE = Paleocene to late Eocene

Tc
Undivided Tertiary sandstone, shale, conglomerate, breccia, and ancient lake deposits.

ORIG_LABEL = Tc
SGMC_LABEL = Tc;0
UNIT_LINK = CATc;0
UNIT_AGE = Paleocene to Pliocene

Tv
Tertiary volcanic flow rocks; minor pyroclastic deposits.

ORIG_LABEL = Tv
SGMC_LABEL = Tv11;0
UNIT_LINK = CATv11;0
UNIT_AGE = Tertiary (12-19 Ma)

UNIT_AGE = Tertiary (8-25 Ma; most near 15)

ROCKTYPE2 = pyroclastic rock

ROCKTYPE2 = trachybasalt

UNIT_AGE = Tertiary (9.5-13 Ma)

UNIT_AGE = Tertiary (7.5-9.5 Ma)

UNIT_AGE = Tertiary (2.5-3.5 Ma)

Tvp
Tertiary pyroclastic and volcanic mudflow deposits.

ORIG_LABEL = Tvp
SGMC_LABEL = Tvp6;0
UNIT_LINK = CATvp6;0

ROCKTYPE2 = tuff

Ti
Tertiary intrusive rocks; mostly shallow (hypabyssal) plugs and dikes. Includes some Mesozoic rocks.

ORIG_LABEL = Ti
SGMC_LABEL = Ti6;0
UNIT_LINK = CATi6;0
UNIT_AGE = Tertiary

UNIT_AGE = Jurassic
ROCKTYPE1 = gabbro

Cenozoic Plutonic

grCz
Cenozoic (Tertiary) granitic rocks--quartz monzonite, quartz latite, and minor monzonite, granodiorite, and granite; found in the Kingston, Panamint, Amargosa, and Greenwater Ranges in southeastern California.

ORIG_LABEL = grCz
SGMC_LABEL = grCZ2;0
UNIT_LINK = CAgrCZ2;0
UNIT_AGE = early Miocene
ROCKTYPE1 = quartz diorite

ORIG_LABEL = grCz
SGMC_LABEL = grCZ1;0
UNIT_LINK = CAgrCZ1;0
UNIT_AGE = middle to late Miocene
ROCKTYPE1 = quartz monzonite
ROCKTYPE2 = granite

UNIT_AGE = middle to late Miocene
ROCKTYPE1 = quartz monzonite
ROCKTYPE2 = granite

Mesozoic

Cretaceous-Paleocene (undivided)

Ku-Ep
Sandstone, shale, and conglomerate

ORIG_LABEL = Ku-Ep
SGMC_LABEL = Ku-PE;0
UNIT_LINK = CAKu-PE;0
UNIT_AGE = Late Cretaceous to Paleocene

Cretaceous

Undivided Cretaceous sandstone, shale, and conglomerate; minor nonmarine rocks in Peninsular Ranges

ORIG_LABEL = K
SGMC_LABEL = K1;0
UNIT_LINK = CAK1;0
UNIT_AGE = Early to Late Cretaceous

UNIT_AGE = Middle Jurassic to late Early Cretaceous
ROCKTYPE1 = felsic volcanic rock

UNIT_AGE = Triassic(?) and/or Jurassic(?)

Undivided Cretaceous sandstone, shale, and conglomerate; minor nonmarine rocks in Peninsular Ranges(?)

ORIG_LABEL = K?
SGMC_LABEL = K?2;0
UNIT_LINK = CAK?2;0
UNIT_AGE = Late Cretaceous(?) to Miocene(?)

UNIT_AGE = Middle Jurassic(?) to Late Cretaceous

TK
Sandstone, shale and minor conglomerate in coastal belt of northwestern California; included by some in Franciscan Complex. Previously considered Cretaceous, but now known to contain early Tertiary microfossils in places.

ORIG_LABEL = TK
SGMC_LABEL = TK;0
UNIT_LINK = CATK;0
UNIT_AGE = Late Cretaceous to Pliocene

Ku
Upper Cretaceous sandstone, shale, and conglomerate

ORIG_LABEL = Ku
SGMC_LABEL = Ku1;0
UNIT_LINK = CAKu1;0
UNIT_AGE = Late Cretaceous

UNIT_AGE = late Early to Late Cretaceous

Kl
Lower Cretaceous sandstone, shale, and conglomerate

ORIG_LABEL = Kl
SGMC_LABEL = Kl;0
UNIT_LINK = CAKl;0
UNIT_AGE = Early Cretaceous

Cretaceous-Jurassic Franciscan Formation

Kjfs
Blueschist and semi-schist of Franciscan complex

ORIG_LABEL = KJfs
SGMC_LABEL = KJfs;0
UNIT_LINK = CAKJfs;0
ROCKTYPE1 = blueschist
ROCKTYPE2 = metasedimentary rock

KJfm
Melange of fragmented and sheared Franciscan complex rocks.

ORIG_LABEL = KJfm
SGMC_LABEL = KJfm;0
UNIT_LINK = CAKJfm;0
UNIT_AGE = Jurassic to Cretaceous
ROCKTYPE1 = melange

KJf
Franciscan complex: Cretaceous and Jurassic sandstone with smaller amounts of shale, chert, limestone, and conglomerate. Includes Franciscan melange, except where separated--see KJfm.

ORIG_LABEL = KJf
SGMC_LABEL = KJf2;0
UNIT_LINK = CAKJf2;0
UNIT_AGE = late Early to early Late Cretaceous
ROCKTYPE1 = schist

Jurassic

Marine

Shale, sandstone, minor conglomerate, chert, slate, limestone; minor pyroclastic rocks

ORIG_LABEL = J
SGMC_LABEL = J4;0
UNIT_LINK = CAJ4;0
UNIT_AGE = Paleozoic(?) to Late Jurassic
ROCKTYPE1 = argillite

UNIT_AGE = Late Jurassic to Early Cretaceous

ROCKTYPE1 = orthoquartzite
ROCKTYPE2 = felsic volcanic rock

UNIT_AGE = Triassic to Late Jurassic

UNIT_AGE = Ordovician(?) to Triassic(?)
ROCKTYPE1 = hornfels

UNIT_AGE = Devonian to Late Jurassic

Triassic

Tr
Shale, conglomerate, limestone and dolomite, sandstone, slate, hornfels, quartzite; minor pyroclastic rocks

ORIG_LABEL = Tr
SGMC_LABEL = TR1;0
UNIT_LINK = CATR1;0
UNIT_AGE = Early to Middle Triassic

UNIT_AGE = Late Triassic to Early Jurassic

ROCKTYPE2 = quartzite

UNIT_AGE = Triassic(?)

UNIT_AGE = Middle to Late Triassic

UNIT_AGE = Permian to Jurassic

Mesozic Non-marine

sch
Schists of various types; mostly Paleozoic or Mesozoic age; some Precambrian.

ORIG_LABEL = sch
SGMC_LABEL = sch1;0
UNIT_LINK = CAsch1;0
UNIT_AGE = Triassic(?)
ROCKTYPE1 = pelitic schist
ROCKTYPE2 = mica schist

ORIG_LABEL = sch
SGMC_LABEL = sch9;0
UNIT_LINK = CAsch9;0
UNIT_AGE = Jurassic(?)
ROCKTYPE1 = gneiss

ROCKTYPE1 = pelitic schist
ROCKTYPE2 = mica schist

UNIT_AGE = Jurassic(?)
ROCKTYPE1 = gneiss

UNIT_AGE = Late Cretaceous to Eocene

ROCKTYPE1 = metavolcanic rock
ROCKTYPE2 = greenschist

UNIT_AGE = Precambrian

UNIT_AGE = Paleozoic

UNIT_AGE = Mesozoic

UNIT_AGE = Late Proterozoic(?) to Paleozoic(?)

UNIT_AGE = Devonian
ROCKTYPE2 = amphibolite

ROCKTYPE1 = greenschist

Mesozoic Mixed

Undivided pre-Cenozoic metasedimentary and metavolcanic rocks of great variety. Mostly slate, quartzite, hornfels, chert, phyllite, mylonite, schist, gneiss, and minor marble.

ORIG_LABEL = m
SGMC_LABEL = m;0
UNIT_LINK = CAm;0
UNIT_AGE = Early Proterozoic to Cretaceous

Mesozoic Plutonic

grMz
Mesozoic granite, quartz monzonite, granodiorite, and quartz diorite

ORIG_LABEL = grMz
SGMC_LABEL = grMZ3;0
UNIT_LINK = CAgrMZ3;0
UNIT_AGE = Permian to Tertiary; most Mesozoic
ROCKTYPE1 = granodiorite

UNIT_AGE = Middle Jurassic to Late Cretaceous
ROCKTYPE1 = tonalite
ROCKTYPE2 = quartz diorite

UNIT_AGE = Middle Jurassic to Late Cretaceous
ROCKTYPE1 = tonalite

ROCKTYPE2 = trondhjemite

UNIT_AGE = Jurassic to early Cretaceous
ROCKTYPE1 = diorite

UNIT_AGE = Permian

grMz?
Mesozoic granite, quartz monzonite, granodiorite, and quartz diorite(?) (Northern Klamath Mountains)

ORIG_LABEL = grMz?
SGMC_LABEL = grMZ?;0
UNIT_LINK = CAgrMZ?;0

gb
Gabbro and dark dioritic rocks; chiefly Mesozoic

ORIG_LABEL = gb
SGMC_LABEL = gb2;0
UNIT_LINK = CAgb2;0
UNIT_AGE = Triassic to Cretaceous

UNIT_AGE = Ordovician

um
Ultramafic rocks, mostly serpentine. Minor peridotite, gabbro, and diabase. Chiefly Mesozoic unit 1

ORIG_LABEL = um
SGMC_LABEL = um3;0
UNIT_LINK = CAum3;0
UNIT_AGE = Middle to Late Jurassic
ROCKTYPE1 = serpentinite
ROCKTYPE2 = peridotite

UNIT_AGE = Late Proterozoic(?) to Early Jurassic

ROCKTYPE2 = pyroxenite

gr
Undated granitic rocks

ORIG_LABEL = gr
SGMC_LABEL = gr3;0
UNIT_LINK = CAgr3;0
UNIT_AGE = Jurassic(?) to Cretaceous(?)
ROCKTYPE1 = plutonic rock

UNIT_AGE = Oligocene to Miocene

Mesozoic Volcanics

mv
Undivided pre-Cenozoic metavolcanic rocks. Includes latite, dacite, tuff, and greenstone; commonly schistose.

ORIG_LABEL = mv
SGMC_LABEL = mv2;0
UNIT_LINK = CAmv2;0
UNIT_AGE = Paleozoic(?) to Mesozoic(?)
ROCKTYPE1 = intermediate volcanic rock
ROCKTYPE2 = mafic volcanic rock

UNIT_AGE = Ordovician(?) to Permian(?)

Mzv
Undivided Mesozoic volcanic and metavolcanic rocks. Andesite and rhyolite flow rocks, greenstone, volcanic breccia and other pyroclastic rocks; in part strongly metamorphosed. Includes volcanic rocks of Franciscan Complex: basaltic pillow lava, diabase, greenstone, and minor pyroclastic rocks

ORIG_LABEL = Mzv
SGMC_LABEL = MZv4;0
UNIT_LINK = CAMZv4;0

ROCKTYPE1 = greenstone

UNIT_AGE = Late Permian(?) to Jurassic

Paleozoic

Permian

Carboniferous

Shale, sandstone, conglomerate, limestone, dolomite, chert, hornfels, marble, quartzite; in part pyroclastic rocks

ORIG_LABEL = C
SGMC_LABEL = C1;0
UNIT_LINK = CAC1;0
UNIT_AGE = Late Proterozoic to Pennsylvanian

UNIT_AGE = Mississippian to Early Permian

UNIT_AGE = Late Devonian to Early Permian
ROCKTYPE1 = shale

UNIT_AGE = Ordovician to Devonian
ROCKTYPE2 = chert

Devonian

Limestone and dolomite, sandstone and shale; in part tuffaceous

ORIG_LABEL = D
SGMC_LABEL = D1;0
UNIT_LINK = CAD1;0
UNIT_AGE = Middle to Late Devonian
ROCKTYPE2 = dolostone

Silurian

Silurian - Ordovician

SO
Sandstone, shale, conglomerate, chert, slate, quartzite, hornfels, marble, dolomite, phyllite; some greenstone

ORIG_LABEL = SO
SGMC_LABEL = SO1;0
UNIT_LINK = CASO1;0
UNIT_AGE = Ordovician to Early Devonian

UNIT_AGE = Late Cambrian(?) to Early Permian(?)

Ordovician

Cambrian

Ca
Sandstone, shale, limestone, dolomite, chert, quartzite, and phyllite; includes some rocks that are possibly Precambrian

ORIG_LABEL = Ca
SGMC_LABEL = CA;0
UNIT_LINK = CACA;0
UNIT_AGE = Late Proterozoic to Middle Devonian

Paleozoic Marine

ls
Limestone, dolomite, and marble whose age is uncertain but probably Paleozoic or Mesozoic

ORIG_LABEL = ls
SGMC_LABEL = ls;0
UNIT_LINK = CAls;0
UNIT_AGE = Paleozoic to Mesozoic

Paleozoic Non-Marine

Pz
Undivided Paleozoic metasedimentary rocks. Includes slate, sandstone, shale, chert, conglomerate, limestone, dolomite, marble, phyllite, schist, hornfels, and quartzite

ORIG_LABEL = PZ
SGMC_LABEL = PZ1;0
UNIT_LINK = CAPZ1;0
UNIT_AGE = Late Proterozoic to Jurassic

UNIT_AGE = Cambrian to Jurassic

UNIT_AGE = Late Proterozoic(?) to Mesozoic(?)

UNIT_AGE = Ordovician to Triassic

UNIT_AGE = Permian(?) to Jurassic(?)

UNIT_AGE = Ordovician to Jurassic
ROCKTYPE2 = metavolcanic rock

UNIT_AGE = Ordovician to Jurassic

UNIT_AGE = Devonian to Jurassic

UNIT_AGE = Devonian(?)

UNIT_AGE = Ordovician(?) to Devonian(?)

Paleozoic Volcanics

Pzv
Undivided Paleozoic metavolcanic rocks. Mostly flows, breccia and tuff, including greenstone, diabase, and pillow lavas; minor interbedded sedimentary rocks

ORIG_LABEL = Pzv
SGMC_LABEL = PZv6;0
UNIT_LINK = CAPZv6;0
UNIT_AGE = Devonian(?) and Permian

UNIT_AGE = Triassic to Jurassic

UNIT_AGE = Devonian and Permian

Paleozoic Plutonics

grPz
Paleozoic and Permo-Triassic granitic rocks in the San Gabriel and Klamath Mountains

ORIG_LABEL = grPz
SGMC_LABEL = grPZ2;0
UNIT_LINK = CAgrPZ2;0
UNIT_AGE = Late Triassic
ROCKTYPE2 = quartz monzodiorite

gr-m
Granitic and metamorphic rocks, mostly gneiss and other metamorphic rocks injected by granitic rocks. Mesozoic to Precambrian.

ORIG_LABEL = gr-m
SGMC_LABEL = gr-m;0
UNIT_LINK = CAgr-m;0
UNIT_AGE = Early Proterozoic to Late Cretaceous

Precambrian

pC
Conglomerate, shale, sandstone, limestone, dolomite, marble, gneiss, hornfels, and quartzite; may be Paleozoic in part

ORIG_LABEL = pC
SGMC_LABEL = pCA2;0
UNIT_LINK = CApCA2;0
UNIT_AGE = Early Proterozoic to Miocene
ROCKTYPE2 = granitoid

UNIT_AGE = Early Proterozoic to Mesozoic

Non-marine

pCc
Complex of Precambrian igneous and metamorphic rocks. Mostly gneiss and schist intruded by igneous rocks; may be Mesozoic in part.

ORIG_LABEL = pCc
SGMC_LABEL = pCAc;0
UNIT_LINK = CApCAc;0

Plutonic

grpC?
Precambrian granite, syenite, anorthosite, and gabbroic rocks in the San Gabriel Mountains; also various Precambrian plutonic rocks elsewhere in southeastern California (?)

ORIG_LABEL = grpC?
SGMC_LABEL = grpCA?;0
UNIT_LINK = CAgrpCA?;0
UNIT_AGE = Miocene

grpC
Precambrian granite, syenite, anorthosite, and gabbroic rocks in the San Gabriel Mountains; also various Precambrian plutonic rocks elsewhere in southeastern California

ORIG_LABEL = grpC
SGMC_LABEL = grpCA1;0
UNIT_LINK = CAgrpCA1;0

UNIT_AGE = Middle Proterozoic
ROCKTYPE1 = anorthosite

UNIT_AGE = Miocene

ORIG_LABEL = M+KJfs
SGMC_LABEL = MI+KJfs;0
UNIT_LINK = CAMI+KJfs;0
UNIT_AGE = Cretaceous(?) to Miocene

ORIG_LABEL = M?
SGMC_LABEL = MI?;0
UNIT_LINK = CAMI?;0
UNIT_AGE = Miocene(?) or Pliocene(?)

ORIG_LABEL = grCz?
SGMC_LABEL = grCZ?;0
UNIT_LINK = CAgrCZ?;0
ROCKTYPE1 = peraluminous granite

ORIG_LABEL = Ku?
SGMC_LABEL = Ku?;0
UNIT_LINK = CAKu?;0
UNIT_AGE = Cretaceous

ORIG_LABEL = J?
SGMC_LABEL = J?;0
UNIT_LINK = CAJ?;0

ORIG_LABEL = Kl?
SGMC_LABEL = Kl?;0
UNIT_LINK = CAKl?;0
UNIT_AGE = Cretaceous (?)

Water

ORIG_LABEL = water
SGMC_LABEL = water;0
UNIT_LINK = CAwater;0
UNIT_AGE =
ROCKTYPE1 = water

Faults

left-lateral

certain

Line Features

Unknown Line Type
GM_LAYER = Unknown Line Type
GM_TYPE = Unknown Line Type
LAYER = Unknown Line Type
LPOLY_ = 4400
RPOLY_ = 4400
CAFAULTS_D = 12194
CAFAULTS_1 = 34198
ARC_CODE = 90
ARC_PARA1 = 0
ARC_PARA2 = 0

Unknown Line Type
GM_LAYER = Unknown Line Type
GM_TYPE = Unknown Line Type
LAYER = Unknown Line Type
LPOLY_ = 4400
RPOLY_ = 4400
CAFAULTS_D = 12311
CAFAULTS_1 = 50806
ARC_CODE = 90
ARC_PARA1 = 0

Unknown Line Type
GM_LAYER = Unknown Line Type
GM_TYPE = Unknown Line Type
LAYER = Unknown Line Type
LPOLY_ = 4400
RPOLY_ = 4400
CAFAULTS_D = 12506
CAFAULTS_1 = 50805
ARC_CODE = 90

concealed

inferred

approximate

right-lateral

FNODE_ = 2505
TNODE_ = 2511

FNODE_ = 2511
TNODE_ = 2520

FNODE_ = 2520
TNODE_ = 2614

normal

thrust

located

Image Overlays

Tour Stops

Western North America Overview

Death Valley Overview

Looking North

Outcrop Patterns

Lake Changes

Lake Changes (2)

Lake Changes (3)