Coseismic dehydration of serpentinite: Evidence from high-velocity friction experiments
نویسندگان
چکیده
منابع مشابه
Experimental Faulting of Serpentinite During Dehydration: Implications for Earthquakes, Seismic Low-Velocity Zones, and Anomalous Hypocenter Distributions in Subduction Zones
Dehydration embrittlement of serpentine was investigated by employing triaxial deformation experiments at high pressure and temperature (P = 1–6 GPa; T = 550–820oC). A modified Griggs apparatus was used up to 3.4 GPa and a Walker-type multi-anvil apparatus was used at 3.5–6 GPa). The investigated specimen is a serpentinized peridotite from Val Malenco, Italy. Dehydration of the sample under dif...
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To investigate differences in the frictional behavior between initially bare rock surfaces of serpentinite and powdered serpentinite ("gouge") at subseismic to seismic slip rates, we conducted single-velocity step and multiple-velocity step friction experiments on an antigorite-rich and lizardite-rich serpentinite at slip rates (V) from 0.003 m/s to 6.5 m/s, sliding displacements up to 1.6 m, a...
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A novel technique is presented that makes it feasible to measure the viscous shear stress τμ from active thermography. With a CO2 laser, patterns are written to the sea surface. This temperature structure is distorted by the velocity profile in the viscous boundary layer. Due to the non-zero penetration depth of both the laser and the infrared camera, this vertical velocity profile can be resol...
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ژورنال
عنوان ژورنال: Chemical Geology
سال: 2013
ISSN: 0009-2541
DOI: 10.1016/j.chemgeo.2013.02.013