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The Geological and Geomorphic Characteristic of Late Quaternary Activity of the Deqin-Zhongdian-Daju Fault

CHANG Zu-feng;ZHANG Yan-feng;LI Jian-lin;ZANG Yang;Earthquake Administration of Yunnan Province;Yunnan University;  
According to the results of field geological and geomorphic investigation,w e focus on discussing the geometric distribution,the active features and the latest active times of the Deqin-Zhongdian-Daju Fault. The Deqin-Zhongdian-Daju Fault w ith right-lateral strike slip and normal faulting property has displaced the late-Pleistocene and Holocene strata at different places. The latest active time of the fault is from late-Pleistocene to Holocene,and its average horizontal and vertical slip rate is 1. 7 ~ 2. 0 mm / a and 0. 6 ~ 0. 7 mm / a respectively. It is one of the most important NW treading strike slip faults locating at the Northw est edge of the Sichuan and central Yunnan Rhombic Block,together w ith the Jinshajiang Fault,compose up the Northw est boundary of Sichuan and central Yunnan Rhombic Block.
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