Tectonic Occurrence and Emplacement Mechanism of Ophiolites from Luobusha-Zedang , Tibet
详细信息
- 责任者：Liang Fenghua (State Key Laboratory of Continental Tectonics and Dynamics ; Institute of Geology ; CAGS ; Beijing 100037 ; China) ; Xu Zhiqin
- 刊名：Acta Petrologica Sinica
- 出版年：2011
- 卷期：27(11)
- 关键词：蛇绿岩 ; ophiolite ; 侵位 ; emplacement ; 西藏 ; Tibet
- 页码：p.3255-3268
- 图表：9 illus., 73 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
摘要
Based on the distribution and contact relationships between ophiolite and different strata, two regional ductile shear zones (DFT and DFR) and their properties are confirmed. They are respectively southern and northern main faults limiting ophiolite. During the emplacement of Luobusha-Zedang ophiolite, DFT is identified to have gone through two stage tectonic movements, i.e. obduction from north to south at the initial emplacement stage and overturned thrust from south to north at the later reactive stage. DFT formed much earlier than DFR and they are not thought to be counter thrusts of MCT from Himalaya orogenic belt.