‘Melt welt’ mechanism of extreme weakening of gabbro at seismic slip rates

Kevin M. Brown () and Yuri Fialko ()
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Kevin M. Brown: Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, USA
Yuri Fialko: Institute of Geophysics and Planetary Physics, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093, USA

Nature, 2012, vol. 488, issue 7413, 638-641

Abstract: A laboratory study of the frictional properties of the igneous rock gabbro at seismically relevant slip rates suggests that the initial weakening of a fault surface during earthquake rupture may be associated with hotspots and macroscopic streaks of melt, which partially unload the rest of the slip interface.

Date: 2012
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DOI: 10.1038/nature11370

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