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Science 13 January 1978:
Vol. 199. no. 4325, pp. 179 - 181
DOI: 10.1126/science.199.4325.179
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Articles

Evidence for 115 Kilometers of Right Slip on the San Gregorio-Hosgri Fault Trend

S. A. GRAHAM 1 and W. R. DICKINSON 2

1 Exploration Department, Western Region, Chevron U.S.A. Inc., San Francisco, California 94119
2 Department of Geology, Stanford University, Stanford, California 94305

The San Gregorio—Hosgri fault trend is a component of the San Andreas fault system on which there may have been about 115 kilometers of post-early Miocene right-lateral strike slip. If so, right slip on the San Andreas and San Gregorio-Hosgri faults accounts for most of the movement between the Pacific and North American plates since mid-Miocene time. Furthermore, the magnitude of right slip on a Paleogene proto-San Andreas fault inferred from the present distribution of granitic basement is reduced considerably when Neogene-Recent San Gregorio-Hosgri right slip is taken into account.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Tectonic evolution of the Northern Salinian Block, California, USA: Paleogene to Recent shortening in a transform fault-bounded continental fragment.
E. Tavarnelli (1998)
Geological Society, London, Special Publications 135, 107-118
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Strike-slip partitioned transpression of the San Andreas fault system: a lithospheric-scale approach.
C. Teyssier and B. Tikoff (1998)
Geological Society, London, Special Publications 135, 143-158
   Abstract »    PDF »
A generalized simulated-annealing optimization for inversion of first-arrival times.
S. K. Pullammanappallil and J. N. Louie (1994)
Bulletin of the Seismological Society of America 84, 1397-1409
   Abstract »    PDF »
North American--Pacific Relative Plate Motion in Southern California from Interferometry.
G. A. Lyzenga, G. A. LYZENGA, and M. P. GOLOMBEK (1986)
Science 233, 1181-1183
   Abstract »    PDF »
The San Andreas fault system through time.
J. C. Crowell (1979)
Journal of the Geological Society 136, 293-302
   Abstract »    PDF »
The Lompoc, California, earthquake (November 4, 1927; M = 7.3) and its aftershocks.
T. C. HANKS (1979)
Bulletin of the Seismological Society of America 69, 451-462
   Abstract »    PDF »
Geodetic control and the 1927 Lompoc, California earthquake.
J. C. SAVAGE and W. H. PRESCOTT (1978)
Bulletin of the Seismological Society of America 68, 1699-1703
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