Observation of ultra-microtexture of fault rocks in shearing-sliding zones

作     者：SUN Yan1*, LU Xiancai1, SHU Liangshu1, GU Lianxing1, ZHU Wenbin1, GUO Jichun1 and LIN Aiming2(1. State Key Laboratory of Mineral Deposits Research, Department of Earth Sciences, Nanjing University, Nanjing 210093, China 2. Department of Geosciences, Shizuoka University, Shizuoka 836, Japan) 

作者机构：State Key Lab. of Mineral Deposits Res. Dept. of Earth Sci. Nanjing Univ. Nanjing 210093 China Dept. of Geosci. Shizuoka Univ. Shizuoka 836 Japan 

出 版 物：《Progress in Natural Science:Materials International》 (自然科学进展·国际材料(英文))

年 卷 期：2005年第15卷第5期

页      面：430-434页

核心收录：

学科分类：0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Supported by National 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 

主　　题：ductile-brittle shearing zone fault rock texture of grinding grain rheology of particulate slipping. 

摘      要：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 dynamothermal 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.