Microearthquake activity adjacent to the Rocklin pluton near Auburn, California
- Creators
- McNally, K. C.
- Simila, G. W.
- Von Dollen, F. J.
Abstract
The occurrence of the Oroville earthquake (M_L = 5.7) of August 1, 1975 heightened interest in the seismotectonics of the Sierra foothills region and particularly the Foothills fault system. Clark (1960) recognized the Foothills fault system as being a major structural feature of the western Sierra Nevada. An 11-week reconnalssance microearthquake study was conducted by Woodward-Clyde Consultants (WCC) for the U.S. Bureau of Reclamation (USBR) to assess the seismic activity of the Sierra foothills 75 km S-SE of Oroville near Auburn, California. Microearthquake activity was detected in the Rocklin-Auburn region with eight events recorded during July 1 to July 24 and seven events during August 15 to October 8, 1976 (see Figure 1). The mobile seismic array consisted of eight Sprengnether MEQ-800 portable seismographs with Mark Products L-4C vertical seismometers. Data recordings were normally 48 hours in length, with a record speed of 1 mm/sec.
Additional Information
Copyright © 1978, by the Seismological Society of America. Manuscript received May 11, 1977. We gratefully thank the U.S. Bureau of Reclamation for support in conducting this study, and the U.S. Geological Survey and the California Division of Mines and Geology for generously sharing data. We sincerely thank P. Corbett, B. Foxall, F. Arioli, and B. Todd for field work; B. Munden and V. Chernock for preliminary data processing; and R. Thompson for technical instrumentation assistance. Woody Savage, Tom Turcotte, and Don Tocher provided helpful comments and suggestions.Attached Files
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Additional details
- Eprint ID
- 48413
- Resolver ID
- CaltechAUTHORS:20140812-133132958
- U.S. Bureau of Reclamation
- Created
-
2014-08-12Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 2925