Three-Dimensional Extrusion Model of the Great Himalaya Slice
详细信息
- 责任者：Xu Zhiqin (State Key Laboratory for Continental Tectonics and Dynamics ; Institute of Geology ; Chinese Academy of Geological Sciences ; Beijing 100037 ; China) ; Wang Qin
- 刊名：Geology in China
- 出版年：2013
- 卷期：40(3)
- 关键词：造山带 ; orogenic belts ; 喜马拉雅山 ; Himalayas
- 页码：p.671-680
- 图表：5 illus., 72 refs.
- 分类号：0300
- issnNo：ISSN1000-3657
- isbnNo：CN11-1167/P
摘要
mary" name="EnDivSummary">The Greater Himalayan Complex(GHC),as the metamorphic core of the Himalayan orogen,shows a “hot” collisional orogen characterized by high-grade (up to granulite facies) metamorphic rocks exhumed from the middle-lower crust,widespread migmatites from extensive anatectic processes and high-temperature ductile deformation. It is suggested that extrusion dynamic processes of the GHC are as follows: 1) partial melting in 45~36 Ma resulting in the weak and hot middle crust; 2) orogenparallel gravitational collapse in 28~26 Ma; 3) ductile thrusting since > 26 Ma; and 4) ductile extrusion resulting from the formation of MCT and STD during 23~17 Ma.
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