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Geologic Atlas of California - Westwood Sheet



Geologic Atlas of California - Westwood Sheet


California Geological Survey, Geologic Atlas of California Map No. 027, 1:250,000 scale

Compilation by: P.A. Lydon, T.E. Gay. JR. and C.W. Jennings

1960

DESCRIPTION OF MAP UNITS

Dune sand
Alluvium
Fan deposits
Recent volcanic rocks
Qrvr-rhyolite
Qrva-andesite
Qrvb-basalt
Qrvp-pyroclastic rocks
Lake deposits
Glacial deposits
River terrace deposits
Pleistocene volcanic rocks
Qpvr-rhyolite
Qpva-andesite
Qpvb-basalt
Qpvp-pyroclastic rocks
Pleistocene nonmarine
Undivided Pliocene nonmarine
Pliocene volcanic rocks
Pvr-rhyolite
Pva-andesite
Pvb-basalt
Pvp-pyroclastic rocks
Miocene volcanic rocks
Mvr-rhyolite
Mva-andesite
Mvb-basalt
Mvp-pyroclastic rocks 
Oligocene volcanic rocks
Ovr-rhyolite
Ova-andesite
Ovb-basalt
Ovp-pyroclastic rocks  
Eocene nonmarine
Eocene volcanic rocks
Evr-rhyolite
Eva-andesite
Evb-basalt
Evp-pyroclastic rocks   
Tertiary nonmarine
Tertiary intrusive (hypabyssal) rocks
Tir-rhyolite
Tia-andesite
Tib-basalt
Tertiary lake deposits
Tertiary volcanic rocks
Tvr-rhyolite
Tva-andesite
Tvb-basalt
Tvp-pyroclastic rocks
Upper Cretaceous marine
Upper Jurasssic marine
Middle and/or Lower Jurassic marine
Triassic marine
Mesozoic granitic rocks 
Mesozoic ultrabasic intrusive rocks
Jurassic-Triassic metavolcanic rocks
Pre-Cretaceous metamorphic rocks (ls=limestone)
Paleozoic marine (ls=limestone)
Pre-Cretaceous metavolcanic rocks
Paleozoic metavolcanic rocks
Permian marine
Permian metavolcanic rocks
Mississippian marine
Silurian marine 

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