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PIIOTOl lt A1M1S
i Castle Crags
iik Elsinore fault zone
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andesite basalt Basin beds California California Division Cambrian Canyon Cascade Cenozoic Coast Ranges conglomerate continental County crust Death Valley deposited Division of Mines domes earth earthquake east eastern Eocene erosion exposed fault zone feet flows folded formed fossils GEOLOGIC AGES geologic history Geologic Map GEOLOGIC VIEWS geologists glacial glaciers granitic rocks gravels Highway Klamath Mountains Lake landslides Lassen Late Cretaceous Late Jurassic lava limestone Map of California map sheet marine Mary Hill photo Mesozoic miles million minerals Mines and Geology Miocene Modoc Plateau Mojave Desert Mount Shasta NATURAL PROVINCES northern Paleozoic Peak Peninsular Ranges Pleistocene Pliocene Precambrian rhyolite River rock formations Salton Trough San Andreas fault San Francisco San Gabriel Mountains sand sandstone schist sea level sedimentary rocks sediments shale Sierra Nevada slopes strata structures surface terrace Tertiary Transverse Ranges U.S. Geological Survey unconformity uplift upper VIEWS AND IOURNEYS volcanic rocks western