Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2427
Authors: Di Toro, G.* 
Hirose, T.* 
Nielsen, S.* 
Pennacchioni, G.* 
Shimamoto, T.* 
Title: Natural and Experimental Evidence of Melt Lubrication of Faults During Earthquakes
Issue Date: 2006
Series/Report no.: /311 (2006)
DOI: 10.1126/science.1121012
URI: http://hdl.handle.net/2122/2427
Keywords: Melt Lubrication
Faults
Earthquakes
Subject Classification04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones 
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 
Abstract: Melt produced by friction during earthquakes may act either as a coseismic fault lubricant or as a viscous brake. Here we estimate the dynamic shear resistance (tf) in the presence of frictioninduced melts from both exhumed faults and high-velocity (1.28 meters per second) frictional experiments. Exhumed faults within granitoids (tonalites) indicate low tf at 10 kilometers in depth. Friction experiments on tonalite samples show that tf depends weakly on normal stress. Extrapolation of experimental data yields tf values consistent with the field estimates and well below the Byerlee strength. We conclude that friction-induced melts can lubricate faults at intermediate crustal depths.
Appears in Collections:Papers Published / Papers in press

Files in This Item:
File Description SizeFormat 
1236.pdf347.13 kBAdobe PDFView/Open
Show full item record

Page view(s)

71
Last Week
0
Last month
0
checked on Aug 18, 2018

Download(s)

20
checked on Aug 18, 2018

Google ScholarTM

Check

Altmetric