The Earthquake Engineering Online Archive  NISEE e-Library

Identifier: Text-S29984
Title: Geologic map of Late Cenozoic deposits, Alameda County, California
Creator(s): Helley, Edward J.; Lajoie, Kenneth R.; Burke, D. B.

Identifier: Text-S30009
Title: Map showing evidence for recent fault activity in the vicinity of Antioch, Contra Costa County, California
Creator(s): Burke, D. B.; Helley, Edward J.