Dehydration-induced damage and deformation in gypsum and implications for subduction zone processes
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Brantut, N; Schubnel, Alexandre; David, Emmanuel; Heripre, E; Gueguen, Yves; Dimanov, A
Description
Experimental heating tests were performed on Volterra gypsum to study the micromechanical consequences of the dehydration reaction. The experimental conditions were drained at 5 MPa fluid pressure and confining pressures ranging from 15 to 55 MPa. One test was performed with a constantly applied differential stress of 30 MPa. The reaction is marked by (1) a porosity increase and homogeneous compaction, (2) a swarm of acoustic emissions, (3) a large decrease in P and S wave velocities, and (4) a...[Show more]
Collections | ANU Research Publications |
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Date published: | 2012 |
Type: | Journal article |
URI: | http://hdl.handle.net/1885/64970 |
Source: | Journal of Geophysical Research |
DOI: | 10.1029/2011JB008730 |
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01_Brantut_Dehydration-induced_damage_and_2012.pdf | 1.37 MB | Adobe PDF | Request a copy |
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