Pleistocene Deformation Features of the East Segment, Kuqa Thrust Belt in Tarim, Xinjiang and Its Comparison with the West Segment
详细信息
- 责任者：Wu Genyao (Institute of Geology and Geophysics ; Chinese Academy of Sciences ; Beijing 100029 ; China) ; Zhang Hong’an
- 刊名：Quaternary Sciences
- 出版年：2012
- 卷期：32(5)
- 关键词：新构造运动 ; neotectonic movement ; 气候控制 ; climatic controls ; 河流阶地 ; river terraces ; 天山 ; Tianshan Mountains
- 页码：p.891-906
- 图表：illus., 1 table, 17 refs.
- 分类号：1400
- isbnNo：CN11-2708/P
摘要
The Cenozoic Kuqa foreland fold-and-thrust belt experienced two episodes of compressive deformation.The Pleistocene compressive deformation resulted in segmentation of the Kuqa thrust belt,which could be summarized as follows.1)the gypsum-salt layers had varied stratohorizons and thicknesses in the west and east segments of the Kuqa belt.;2)the Pleistocene anticlines and core thrusts well developed in the West Qiulitag of the west segment,and elongated more than 100 km;3)in the west segment,the transfer structure was NW-strike sinistral shear faults,and only one Pleistocene shear fault was found so far and 4)the drainages had different features.In the west segment,the current was NW-direction,then turned towards east-by-northeast along the northern piedmont of the West Qiulitag Mountains.While in the east segment,a group of longitudinal rivers flowed through the East Qiulitag Mountains.