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Science 9 July 1999:
Vol. 285. no. 5425, pp. 236 - 239
DOI: 10.1126/science.285.5425.236
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Reports

Role of Fluids in Faulting Inferred from Stress Field Signatures

Jeanne L. Hardebeck, * Egill Hauksson

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.

Seismological Laboratory, MC 252-21, California Institute of Technology, Pasadena, CA 91125, USA.
*   To whom correspondence should be addressed. E-mail: jlh{at}gps.caltech.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Frictional-viscous flow, seismicity and the geology of weak faults: a review and future directions.
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Determination of fault friction from reactivation of abyssal-hill faults in subduction zones.
M. Billen, E. Cowgill, and E. Buer (2007)
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Patterns of bedrock uplift along the San Andreas fault and implications for mechanisms of transpression.
J. A. Spotila, M. A. House, N. A. Niemi, R. C. Brady, M. Oskin, and J. T. Buscher (2007)
Geological Society of America Special Papers 434, 15-33
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Mapping stress and structurally controlled crustal shear velocity anisotropy in California.
N. L. Boness and M. D. Zoback (2006)
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Dynamics of the Salton block: Absolute fault strength and crust-mantle coupling in Southern California.
N. Fay and E. Humphreys (2006)
Geology 34, 261-264
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Fracture development within a stratovolcano: the Karaha-Telaga Bodas geothermal field, Java volcanic arc.
M. Nemcok, J. N. Moore, R. Allis, and J. McCulloch (2004)
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Stress Orientations Obtained from Earthquake Focal Mechanisms: What Are Appropriate Uncertainty Estimates?.
(2001)
Bulletin of the Seismological Society of America 91, 250-262
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J. Townend and M. D. Zoback (2001)
Geological Society, London, Special Publications 186, 13-21
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