Published July 9, 1999
| public
Journal Article
Role of fluids in faulting inferred from stress field signatures
- Creators
- Hardebeck, Jeanne L.
-
Hauksson, Egill
Abstract
The stress orientation signature of weak faults containing high-pressure fluids has been observed for segments of the San Andreas fault system in southern California. The inferred lithostatic fluid pressures extend into the surrounding relatively intact rock in a zone scaling with the width of the interseismic strain accumulation. Repeated strain-related fracturing and crack sealing may have created low-permeability barriers that seal fluids into the network of currently active fractures.
Additional Information
© 1999 American Association for the Advancement of Science. Received 18 November 1998; accepted 7 June 1999. Supported by the Southern California Earthquake Center (SCEC), NSF Cooperative Agreement EAR-8920136, U.S. Geological Survey (USGS) Cooperative Agreements 14-08-0001-A0899 and 1434-HQ-97AG01718, and USGS grant 99HQGR0039. We thank H. Kanamori, L. M. Jones, J. Deng, M. D. Zoback, and S. Hickman for valuable reviews and A. J. Michael and J. W. Gephart for sharing their stress inversion programs. This is SCEC contribution 452 and Caltech DGPS contribution 8586.Additional details
- Eprint ID
- 36965
- DOI
- 10.1126/science.285.5425.236
- Resolver ID
- CaltechAUTHORS:20130215-143153973
- Southern California Earthquake Center (SCEC)
- EAR-8920136
- NSF
- 14-08-0001-A0899
- USGS
- 1434-HQ-97AG01718
- USGS
- 99HQGR0039
- USGS
- Created
-
2013-02-15Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Seismological Laboratory, Division of Geological and Planetary Sciences
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 8586