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The AAPG/Datapages Combined Publications Database

Pacific Section of AAPG


Field Guide to the Late Cenozoic Subduction Tectonics & Sedimentation of North Coastal California, 1992
Pages 21-30

Seismicity and Stress at the Southern End of the Cascadia Subduction Zone

Robert C. McPherson


Three dimensional distribution of well-located seismicity is used to delineate the geometry of lithospheric plates comprising the Mendocino triple junction in northern California. After an understanding of the geometry of the plates is established, first motions of the best located earthquakes are analyzed to identify stress orientations within each plate. Using both the first motion data and the distribution of the earthquakes, the style of faulting within each plate is determined.

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