期刊
JOURNAL OF STRUCTURAL GEOLOGY
卷 103, 期 -, 页码 17-36出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsg.2017.09.003
关键词
Fault rocks; Carbonate; Gouge; Friction; Microstructure
资金
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation [P4472]
The structure, frictional properties and permeability of faults within carbonate rocks exhibit a dynamic interplay that controls both seismicity and the exchange of fluid between different crustal levels. Here we review field and experimental studies focused on the characterization of fault zones in carbonate rocks with the aim of identifying the microstructural indicators of rupture nucleation and seismic slip. We highlight results from experimental research linked to observations on exhumed fault zones in carbonate rocks. From the analysis of these accumulated results we identify the meso and microstructural deformation styles in carbonates rocks and link them to the lithology of the protolith and their potential as seismic indicators. Although there has been significant success in the laboratory reproduction of deformation structures observed in the field, the range of slip rates and dynamic friction under which most of the potential seismic indicators is formed in the laboratory urges caution when using them as a diagnostic for seismic slip. We finally outline what we think are key topics for future research that would lead to a more in-depth understanding of the record of seismic slip in carbonate rocks. Crown Copyright (C) 2017 Published by Elsevier Ltd.
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