The Micro-Strain Mechanism of Jiaochang Arc Structure in Songpan-Garze Fold Belt, Northwestern
详细信息
- 责任者：Deng Bin (Key Laboratory of Oil and Gas Reservoir Geology and Exploitation ; Chengdu University of Technology ; Chengdu 610059 ; China) ; Liu Shugen
- 刊名：Geological Bulletin of China
- 出版年：2010
- 卷期：29(5)
- 关键词：显微构造 ; ultrastructure ; 山字型构造体系 ; epsilon structural system ; 四川 ; Sichuan Province
- 页码：p.697-706
- 图表：4 illus., 2 tables, 27 refs.
- 分类号：0300
- issnNo：ISSN1671-2552
- isbnNo：CN11-4648/P
摘要
The Jiaochang arc belt is characterized by synorogenic, multiphasic, coaxial compressional deformation and metamorphism, which is under the mid-shallow layer setting, and has some typical microtectonics, such as rotated helicitic structure, symmetric pressure shadow and kind structure etc. The symmetrically micro-structural feature in Jiaochang is significantly different to the unsymmetrical feature about "strike-slip" mechanism of arc belt, attributed to differential stress-strain mechanism controlled by the north to south main stress.