United States Geological Survey YearbookThe Survey, 1985 - Geology |
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Page 19
... Franciscan assemblage , that were added , or ac- creted , to the North American continent beginning about 100 million years ago . The concept that large masses of marine sediments and oceanic land masses have been moved long distances ...
... Franciscan assemblage , that were added , or ac- creted , to the North American continent beginning about 100 million years ago . The concept that large masses of marine sediments and oceanic land masses have been moved long distances ...
Page 20
... Franciscan terrane in the Coast Ranges and the exposed continental crust in the Sierra Nevada , 50 miles to the east , are buried beneath the Great Valley of California and a thick pile of sediments . The Franciscan assemblage consists ...
... Franciscan terrane in the Coast Ranges and the exposed continental crust in the Sierra Nevada , 50 miles to the east , are buried beneath the Great Valley of California and a thick pile of sediments . The Franciscan assemblage consists ...
Page 21
... Franciscan assemblage SIERRA NEVA レ A R -N . BL - O - CK- PACIFIC OCEAN Figure 3. Geologic map of central California . 0 Fresno E Ultramafic rocks Metamorphic rocks ; Granitic and associated Mesozoic L Bakersfield Paleozoic at the east ...
... Franciscan assemblage SIERRA NEVA レ A R -N . BL - O - CK- PACIFIC OCEAN Figure 3. Geologic map of central California . 0 Fresno E Ultramafic rocks Metamorphic rocks ; Granitic and associated Mesozoic L Bakersfield Paleozoic at the east ...
Page 22
... Franciscan assemblage was accreted to the continental margin along the Coast Range thrust at a sub- duction zone . B , New geophysical study indicates that , in- stead , the Franciscan mass has been thrust onto the conti- nental margin ...
... Franciscan assemblage was accreted to the continental margin along the Coast Range thrust at a sub- duction zone . B , New geophysical study indicates that , in- stead , the Franciscan mass has been thrust onto the conti- nental margin ...
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activities Administration Alaska aquifer system areas assessment Atlantic Coastal Plain Basin boundary Bureau California cartographic Central chemical chemical elements Chief City City of w Colorado Commission contain cooperative Coordination County cover mapping crust dams data base Denver Department of Public deposits Division earth science earthquake Energy Environmental feet fiscal year 1985 Flood Franciscan assemblage geologic mapping Geologist geophysical ground water ground-water hazards hydrologic image maps Information Systems investigations irrigation Lake land cover Landsat landslide major manganese mapping projects miles Mineral Resources mitigation National Center National Mapping North ocean Office oil and gas photographs Planning potential quadrangle Raton Basin remote sensing River rocks San Joaquin Valley sand blows sediment sedimentary seismic selenium Service slope soil sources Stop studies surface tion topographic Transportation U.S. Geological Survey United USGS Valley volcano Water Conservation District Water District water quality Water Resources water-quality Wildlife zone