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GSA Special Papers
Late Quaternary Climate, Tectonism, and Sedimentation in Clear Lake, Northern California Coast Ranges
Author(s)
Geological Society of America

Volume
214
Copyright:
© 1988 Geological Society of America
Geological Society of America
ISBN print:
9780813722146
Publication date:
January 01, 1988
Book Chapter
Seismicity in the Clear Lake area, California, 1975–1983
Author(s)
-
Published:January 01, 1988
Earthquake locations for the time period March 1975 through March 1983 indicate diffuse seismicity in the Clear Lake area, with the area to the southeast of the lake having the highest level of activity. Swarms lasting 2 days, with events of magnitude ≥3.5, have been observed in the Konocti Bay fault zone. In contrast, almost no microearthquake activity is associated with the Collayomi fault zone. A 10-km-wide northeast-southwest-trending zone of seismicity is apparent although there is no known corresponding geologic feature. Earthquake depths in the Clear Lake area are shallower than in the surrounding major right-lateral fault zones. Focal mechanism...
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Index Terms/Descriptors
- arrays
- arrival time
- body waves
- California
- Clear Lake
- earthquakes
- elastic waves
- epicenters
- extension
- faults
- focal mechanism
- lateral faults
- magnitude
- microearthquakes
- networks
- P-waves
- right-lateral faults
- seismic waves
- seismicity
- seismology
- seismotectonics
- stress
- strike-slip faults
- swarms
- tectonics
- transform faults
- United States
- Konocti Bay fault zone
- Collayomi fault zone
Latitude & Longitude
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