Definition of the Brittle-Ductile Transition in the Coso Geothermal Field East-Central California USA

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Conference Paper: Definition of the Brittle-Ductile Transition in the Coso Geothermal Field East-Central California USA

Abstract
C-35 DEFINITION OF THE BRITTLE-DUCTILE TRANSITION IN THE COSO GEOTHERMAL FIELD EAST-CENTRAL CALIFORNIA USA Abstract 1 The brittle-ductile transition (BDT) beneath the Coso geothermal field is investigated using a combination of receiver function analyses reflection seismic data microseismic hypocenter distribution and inversion of microearthquake focal mechanisms for incremental strain. The BDT occurs at a depth of about 4 km which marks the base of seismicity and is the depth at which a subhorizontal reflecting horizon (“A”) is visible on depth-migrated images. At a slightly greater depth (about 5-6 km) receiver function studies image a significant low velocity zone that may

Authors 
F.C. Monastero and J.R. Unruh






Conference 
64th EAGE Conference & Exhibition Special Session: Geophysical Technologies for Renewable Geothermal Resources; Florence, Italy; 2002/05/27


Published 
European Association of Geoscientists and Engineers, 2002





DOI 
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Online 
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Citation

F.C. Monastero,J.R. Unruh. 2002. Definition of the Brittle-Ductile Transition in the Coso Geothermal Field East-Central California USA. In: EAGE Annual Meeting, extended abstracts. 64th EAGE Conference & Exhibition Special Session: Geophysical Technologies for Renewable Geothermal Resources; 2002/05/27; Florence, Italy. Florence, Italy: European Association of Geoscientists and Engineers; p. # of pages not indicated