Bibliographic Citation
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| Title | Mechanism of induced seismicity at the Geysers geothermal reservoir, California |
| Creator/Author | Allis, R.G. |
| Publication Date | 1982 Jun 01 |
| OSTI Identifier | OSTI ID: 6700985 |
| Other Number(s) | Journal ID: CODEN: GPRLA |
| Resource Type | Journal Article |
| Resource Relation | Journal Name: Geophys. Res. Lett.; (United States); Journal Volume: 9:6 |
| Research Org | Geophysics Div., D.S.I.R., Private Bag, Taupo, New Zealand |
| Subject | 58 GEOSCIENCES; 15 GEOTHERMAL ENERGY; GEYSERS GEOTHERMAL FIELD; SEISMICITY; CREEP; FRICTION; PLATE TECTONICS; RESERVOIR ROCK; SLIP; STRESSES; GEOTHERMAL FIELDS; MECHANICAL PROPERTIES; TECTONICS |
| Description/Abstract | The Geysers reservoir is situated in a 60--80 km-wide right-lateral shear zone associated with the North American-Pacific plate boundary. A small fraction of the shear may be occurring as permanent aseismic creep, which is being converted to stick-slip movement in the Geysers reservoir due to steam production. Two mechanisms could be responsible for the induced seismicity: a large (>100 bars) increase in effective rock pressure; and an increase in the coefficient of friction. The first mechanism requires that the initial state of the reservoir be predominantly liquid-dominated. The second mechanism is a consequence of dehydration of the reservoir causing both the 'hardening' of clay and fault gouge, and the precipitation of silica. |
| Country of Publication | United States |
| Language | English |
| Format | Medium: X; Size: Pages: 629-632 |
| System Entry Date | 2006 Aug 24 |
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Last Updated: 11/19/2009