Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Controls on timing and amount of right-lateral offset on the East Bay fault system, San Francisco Bay region, California

R. W. Graymer, A. M. Sarna-Wojcicki, J. P. Walker, R. J. McLaughlin and R. J. Fleck
Controls on timing and amount of right-lateral offset on the East Bay fault system, San Francisco Bay region, California
Geological Society of America Bulletin (December 2002) 114 (12): 1471-1479

Abstract

The distribution of offset, correlated rock units, relative position of northward-younging volcanic rocks, and distribution of units not offset together reveal the history of strike-slip deformation along the East Bay fault system. The system accumulated 175 km of right-lateral offset since 12 Ma, but of this amount, only approximately 25 km was accumulated between 12 and 10 Ma and only approximately 75 km between 12 and 6 Ma. The westernmost Hayward fault zone is responsible for more than half (100 km) of the total, and it, too, has undergone more offset (60 km) after 6 Ma than before. The activity on any single fault zone in the system has been sporadic, and alternating periods of activity and inactivity have been recorded on at least some of the fault zones.


ISSN: 0016-7606
EISSN: 1943-2674
Coden: BUGMAF
Serial Title: Geological Society of America Bulletin
Serial Volume: 114
Serial Issue: 12
Title: Controls on timing and amount of right-lateral offset on the East Bay fault system, San Francisco Bay region, California
Affiliation: U. S. Geological Survey, Menlo Park, CA, United States
Pages: 1471-1479
Published: 200212
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 33
Accession Number: 2002-079360
Categories: Structural geologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch maps
N36°52'60" - N38°55'60", W123°34'00" - W120°55'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200224
Program Name: USGSOPNon-USGS publications with USGS authors
Close Modal

or Create an Account

Close Modal
Close Modal