Southern San Andreas Fault Evaluation Field Activity: Approaches to Measuring Small Geomorphic Offsets--Challenges and Recommendations for Active Fault Studies

2014 ◽  
Vol 85 (1) ◽  
pp. 68-76 ◽  
Author(s):  
K. M. Scharer ◽  
J. B. Salisbury ◽  
J. R. Arrowsmith ◽  
T. K. Rockwell
Keyword(s):  
Active Fault ◽  
San Andreas Fault ◽  
San Andreas ◽  
Field Activity

Weakness of the San Andreas Fault revealed by samples from the active fault zone

2011 ◽  
Vol 4 (4) ◽  
pp. 251-254 ◽  
Author(s):  
B. M. Carpenter ◽  
C. Marone ◽  
D. M. Saffer
Keyword(s):  
Fault Zone ◽  
Active Fault ◽  
San Andreas Fault ◽  
Active Fault Zone ◽  
San Andreas

Active displacement on the Calaveras fault zone at Hollister, California

1971 ◽  
Vol 61 (2) ◽  
pp. 399-416
Author(s):  
Thomas H. Rogers ◽  
Robert D. Nason
Keyword(s):  
San Francisco ◽  
Fault Zone ◽  
Active Fault ◽  
San Andreas Fault ◽  
Fault System ◽  
Fault Creep ◽  
San Andreas ◽  
San Andreas Fault System ◽  
Fault Trace ◽  
Fault Displacement

abstract The Calaveras fault zone, which is a major branch of the San Andreas fault system in northern California, passes through the City of Hollister 160 km (100 miles) southeast of San Francisco. Active fault displacement (fault creep slippage) has occurred in and near Hollister along a fault trace within the Calaveras fault zone. Various man-made structures crossing the fault trace have been deformed and gradually offset in a right-lateral sense. The amount of offset varies directly with age of the structure. The maximum offset is 33 cm (13 in) of a sidewalk constructed in the period 1909 to 1914. Offsets on dated structures indicate displacement rates of approximately 2 mm/yr (0.08 in/yr) from 1909 to 1925 and 6 mm/yr (0.24 in/yr) from 1925 to 1967. Data obtained from periodic measurement of specially designed survey lines and instruments have indicated a displacement rate of 9 mm/yr (0.4 in/yr) since May 1967. Displacements of the survey lines are not associated with local earthquake events. Rates of active fault displacement vary with time and position along the Calaveras and San Andreas fault zones in the Hollister area. The pattern of this variation suggests that active displacement on the San Andreas fault zone may be transferring northeastward to the Calaveras fault zone.

The San Andreas Fault

1993 ◽  
Author(s):  
Sandra S. Schulz ◽  
Robert E. Wallace
Keyword(s):  
San Andreas Fault ◽  
San Andreas
Sign in / Sign up

Export Citation Format

Share Document