Welcome to the California Department of Conservation

Click here to go to the California Geological Survey

Geologic Atlas of California - Trona Sheet



Geologic Atlas of California - Trona Sheet


California Geological Survey, Geologic Atlas of California Map No. 023, 1:250,000 scale

Compilation by: Charles W. Jennings, John L. Burnett, and Bennie W. Troxel

1962

DESCRIPTION OF MAP UNITS

Dune sand
Alluvium
Salt deposits
Lake deposits
Pleistocene volcanic rocks
Qpvr-rhyolite
Qpva-andesite
Qpvb-basalt
Qpvp-pyroclastic rocks
Pleistocene nonmarine
Plio-Pleistocene nonmarine
Quaternary and/or Pliocene cinder cones
Undivided Pliocene nonmarine
Middle and/or lower Pliocene nonmarine
Pliocene volcanic rocks
Pvr-rhyolite
Pva-andesite
Pvb-basalt
Pvp-pyroclastic rocks
Undivided Miocene nonmarine
Upper Miocene nonmarine
Middle Miocene nonmarine
Miocene volcanic rocks
Mvr-rhyolite
Mva-andesite
Mvb-basalt
Mvp-pyroclastic rocks 
Oligocene nonmarine
Oligocene volcanic rocks
Ovr-rhyolite
Ova-andesite
Ovb-basalt
Ovp-pyroclastic rocks  
Paleocene nonmarine
Cenozoic nonmarine
Cenozoic volcanic rocks
QTvr-rhyolite
QTva-andesite
QTvb-basalt
QTvp-pyroclastic rocks
Tertiary nonmarine
Tertiary intrusive (hypabyssal) rocks
Tir-rhyolite
Tia-andesite
Tib-basalt
Tertiary volcanic rocks
Tvr-rhyolite
Tva-andesite
Tvb-basalt
Tvp-pyroclastic rocks
Triassic marine
Mesozoic granitic rocks 
Mesozoic basic intrusive rocks
Jurassic-Triassic metavolcanic rocks
Pre-Cretaceous metamorphic rocks (ls=limestone)
Pre-Cretaceous metasedimentary rocks
Paleozoic marine (ls=limestone)
Pre-Cretaceous metavolcanic rocks
Pre-Cenozoic granitic and metamorphic rocks
Paleozoic metavolcanic rocks
Permian marine
Undivided Carboniferous marine
Mississippian marine
Cambrian marine
Cambrian - Precambrian marine
Undivided Precambrian metamorphic rocks
pCg=gneiss
pCs=schist
pCls=limestone and/or dolomite
Later Precambrian sedimentary and metamorphic rocks
Earlier Precambrian metamorphic rocks

Click here for the Index to Geologic Mapping in California.

Click here to order this CGS map.