Microfracturing and faulting in a limestone |
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| Authors: | William A Olsson |
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| Institution: | Department of Geology, University of Illinois at Urbana-Champaign, Urbana, Ill.U.S.A. |
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| Abstract: | Two fundamentally distinct types of microfractures are present in an experimentally deformed limestone: subaxial microfractures and microfaults. Macroscopic faults are composed of coalesced microfaults and are not related to the subaxial microfractures. A high-temperature mechanical instability occurs at temperatures of 200° C and above when the confining pressure is 600 bars or less. |
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