Description: Preliminary geologic map emphasizing bedrock formations in Contra Costa County, California

Main Author:	Geological Survey (U.S.)
Other Authors:	Graymer, R. W., Jones, David Lawrence, 1930-, Brabb, Earl E., 1929-
Format:	Microfilm
Language:	English
Published:	[Menlo Park, CA] : [Denver, CO] : The Survey ; [USGS Information Services], 1994.
Physical Description:	8 pages, 2 unnumbered leaves ; 28 cm.
Series:	U.S. Geological Survey open-file report ; 94-622.
Subjects:	Geology -- California -- Contra Costa County -- Maps. Geology, Structural -- California -- Contra Costa County -- Maps.

Item Description:	Cover title. Shipping list no.: 95-0621-M. Imprint from transmittal sheet. Header has R.W. Graymar in error. Includes bibliographical references (leaf [2]). Microfiche. [Denver, Colo. : U.S. Geological Survey, 1995?] 1 microfiche : negative.
Physical Description:	8 pages, 2 unnumbered leaves ; 28 cm.
Bibliography:	Includes bibliographical references (leaf [2]).