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《Journal of East China Institute of Technology》 2006-01
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Conversion of Neotectonic Movements in South Qiangtang Block from Modern River Terraces of Suoqu Drainage

JIA Jian-cheng~(1,2),LI Jian-wu~1,WANG Gen-hou~2, LI Qiu-shi~2,YU Hai-liang~2(1.Xi'an Branch of China Coal Research Institute Xi'an,SX 710054,China;2.School of the Earth Sciences and Mineral Resources,China University of Geosciences,Beijing 100083,China)  
Made up of Benqu,Suoqu,Lianqu,and Yiqu,which originate from the south of Tanggula mountain,Suoqu drainage area is the largest catchments section in Nujiang.Modern rivers and terraces develop extraordinary in the drainage.Researching of the developmental degree,type,level,and structural deformational feature of river terrace contrastively between the upriver and middle-lower reaches of the river,combining regional tectonic setting,the author of the paper put forward that the main form of tectonic movement of south Qiangtang block in Holocene epoch is under the background of tectonic upwarping,the block is tilted from south south-east to north north-west in block fault differential shapes.This kind of movement form was caused by India plate concussive extrusion towards north of the Eurasia plate.At the same time,It was restricted by the otherness movement between Shuanghu-Chawula fracture zone and Bangonghu-Nujiang fracture zone.Form and development of river terraces in this area are not only controlled by tilt movement in South Qiangtang block,but they are restricted by activity fault movement inter the block directly.
【Fund】: 中国地质调查局1∶25万仓来拉幅(146c004003)区域地质调查项目(200313000001)
【CateGory Index】: P546
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