California earthquakes: Why only shallow focus?
Frictional sliding on sawcuts and faults in laboratory samples of granite and gabbro is markedly temperature-dependent. At pressures from 1 to 5 kilobars, stick-slip gave way to stable sliding as temperature was increased from 200 to 500 degrees Celsius. Increased temperature with depth could thus cause the abrupt disappearance of earthquakes noted at shallow depths in California.
Citation Information
Publication Year | 1970 |
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Title | California earthquakes: Why only shallow focus? |
Authors | W.F. Brace, J. D. Byerlee |
Publication Type | Article |
Publication Subtype | Journal Article |
Series Title | Science |
Index ID | 70010284 |
Record Source | USGS Publications Warehouse |