1981. 2014-04-01T14:48:20Z. 2014-04-15T22:13:37Z. Luedke, Robert G. Dept. of the Interior, U.S. Geological Survey. English. Public. California and Nevada. Cenozoic and From 65 million years ago.
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1980. 2002-06-01T04:00:00Z. 2022-12-06T21:50:51Z. Geological Survey (U.S.). The Survey. English. cartographic image. Public. Sacramento County (Calif.), San Joaquin County (Calif.), California, Sacramento County., and San Joaquin County. Cenozoic and From 65 million years ago.