High-Pressure Reactions and Shear Strength of Serpentinized Dunite

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Science  09 Sep 1966:
Vol. 153, Issue 3741, pp. 1285-1287
DOI: 10.1126/science.153.3741.1285


The recently reported Pronounced decrease in shear strength of serpentine-bearing rocks at 30 to 40 kilobars in the temperature range 300° to 520 ° C may be attributed to the transformation of serpentine to a Pressure-dependent, 10-angstrom,2: 1 layer silicate plus brucite and periclase. This reaction increases density by about 8.5 percent.