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Publications

Publications from the staff of the Geology, Minerals, Energy, and Geophysics Science Center

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Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement Statistical relations among earthquake magnitude, surface rupture length, and surface fault displacement

In order to refine correlations of surface-wave magnitude, fault rupture length at the ground surface, and fault displacement at the surface by including the uncertainties in these variables, the existing data were critically reviewed and a new data base was compiled. Earthquake magnitudes were redetermined as necessary to make them as consistent as possible with the Gutenberg methods...
Authors
Manuel G. Bonilla, Robert K. Mark, James J. Lienkaemper

Cenozoic plate motions and the volcano-tectonic evolution of western Oregon and Washington Cenozoic plate motions and the volcano-tectonic evolution of western Oregon and Washington

A refined northeast Pacific plate-motion model provides a framework for analysis of the Tertiary volcanic and tectonic history of western Oregon and Washington. We examine three possible models for the origin of the allochthonous Paleocene and Eocene oceanic basalt basement of the Coast Range: (1) accretion to the continent of hot spot generated linear seamount chains; (2) accretion of...
Authors
Ray E. Wells, David C. Engebretson, P. D. Snavely, R. S. Coe
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