Abstract
Based on scanning electronic microscopic observation of three fault rocks in ductile-brittle shearing-sliding zones (including one palimpsest mylonite sampled from deep bore cores of Cajon Pass, California, two flowing-structured carbargillites sampled from Shaancan Well 1 located in north Shaanxi, and Well NH located in Huanghai, respectively), micron- and nanometer-scaled ultra-fine grinding grain texture of fault rocks is discovered in this study. And the geological significance of grinding grain texture is discussed in terms of its particulate organization, rheology of particulate slipping, laminar petrography and micro dynamics including dynamotherman metamorphism, fluid transferring, particulate autorotation, and so on. In addition, the remaining problems to be solved and broad prospects in this new study field are also discussed.
∗Supported by Natural Science Foundation of China (Grant Nos. 40372092, 40373024, 40172067, and 40172034) and the State Key Laboratory of Geology and Exploitation Engineering of Petroleum Reservoir
Notes
∗Supported by Natural Science Foundation of China (Grant Nos. 40372092, 40373024, 40172067, and 40172034) and the State Key Laboratory of Geology and Exploitation Engineering of Petroleum Reservoir