| Abstract: | Field and laboratory observations suggest that the porosity within fault zones varies over earthquake cycles so that fluid pressure is in long-term equilibrium with hydrostatic fluid pressure in the country rock. Between earthquakes, ductile creep compacts the fault zone, increasing fluid pressure, and finally allowing frictional failure at relatively low shear stress. Earthquake faulting restores porosity and decreases fluid pressure to below hydrostatic. This mechanism may explain why major faults, such as the San Andreas system, are weak. |
| Genre: | Article |
| ProdID: | 70017260 |
| Citation Author: | Sleep, N. H.; Blanpied, M. L. |
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| Citation End Page: | 692 |
| Citation Issue: | 6397 |
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| Citation Language: | English |
| Citation Larger Work Title: | Nature |
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| Citation Number Of Pages: | 6 |
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| Citation Search Results Text: | Creep, compaction and the weak rheology of major faults; 1992; Article; Journal; Nature; Sleep, N. H.; Blanpied, M. L. |
| Citation Start Page: | 687 |
| Citation Volume: | 359 |
| Citation Year: | 1992 |
| Type: | citation/reference |
| Text: | Creep, compaction and the weak rheology of major faults; 1992; Article; Journal; Nature; Sleep, N. H.; Blanpied, M. L. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1992 00:00 -0600 |
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