Fabric transition with dislocation creep of a carbonate fault zone in the brittle regime
Fabric transition with dislocation creep of a carbonate fault zone in the brittle regime
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脆性区碳酸盐断层带位错蠕变的织物转变
DOI：
10.1016/j.tecto.2017.12.008
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发表时间：
2018
期刊：
影响因子：
2.9
通讯作者：
H. Jung
中科院分区：
文献类型：
--
作者：
Sungshil Kim;J. Ree;R. Han;Nahyeon Kim;H. Jung
Fabric transition by a switch in the dominant slip system of minerals in the plastic regime can be induced by changes in temperature, strain rate, or water content. We propose here this fabric transition by frictional heating in seismogenic fault zones in the brittle regime. The Garam Thrust in the Taebaeksan Basin of South Korea has a hanging wall of Cambrian dolostone juxtaposed against a footwall of Ordovician limestone and records a minimum displacement of ~ 120 m. In a 10 cm thick plastically deformed layer adjacent to the principal slip layer of the fault zone, the lattice preferred orientation of calcite grains suggests that the dominant slip system changes, approaching the principal slip layer, fromr<02–21> and e-twinning, throughr<02–21> and basal , to basal . This fabric transition requires a high temperature-gradient of 40 °C/cm, which we infer to result from frictional heating of the seismic fault zone. We suggest that fabric transition within a thin plastically deformed layer adjacent to the principal slip layer of a fault zone indicates an unusually steep temperature gradient and provides strong evidence of seismic slip.
含白云母石英岩中的假速晶石：同震摩擦引起的石英熔化和塑性变形
影响因子：
3.1
作者：
Bestmann;Pennacchioni;Göken;de Wall
通讯作者：
de Wall