首页|期刊导航|中国地震研究（英文版）|Slip Rate on the Altyn Tagh Fault on the West of the Cherchen River (Between 85°～85°45′E) Since Late Quaternary
中国地震研究（英文版）2004，Vol.18Issue(4)：396-405,10.
Slip Rate on the Altyn Tagh Fault on the West of the Cherchen River (Between 85°～85°45′E) Since Late Quaternary
Slip Rate on the Altyn Tagh Fault on the West of the Cherchen River (Between 85°～85°45′E) Since Late Quaternary
摘要
Abstract
Because of the significance to the formation and evolution of the Tibetan plateau, the displacement and slip rate of the Altyn Tagh fault have been topics full of disputation.Scientists who hold different opinions on the evolution of Tibet insist on different slip rates and displacements of the fault zone.In the article, study is focused on the late Quaternary slip rate of the Altyn Tagh fault west of the Cherchen River (between 85°E and 85°45' E). On the basis of high resolution SPOT images of the region, three sites, namely Koramlik, Aqqan pasture and Dalakuansay, were chosen for field investigation. To calculate the slip rate of the fault, displacement of terraces was measured on SPOT satellite images or in situ during fieldwork and thermo-luminescence (TL) dating method was used. To get the ages of terraces, samples of sand were collected from the uppermost sand beds that lie just under loess. The method for calculating slip rate of fault is to divide the displacement of terrace risers by the age of its neighboring lower terrace. The displacement of rivers is not considered in this article because of its uncertainties.At Koramlik, the slip rate ofthe Altyn Tagh fault is 11.6 ± 2.6mm/a since 6.02 ± 0.47kaB.P and 9.6 ± 2.6mm/a since 15.76 ± 1.19ka B.P.At Aqqan pasture, about 30km west of Koramlik, the slip rate is 12.1 ± 1.9mm/a since2.06±0.16 ka B.P.At Dalakuansayi, the slip rate of the fault is 12.2 ± 3.0mm/a since 4.91 ± 0.39ka B.P.Hence, we get the average slip rate of 11.4 ± 2.5mm/a for the western part of the Altyn Tagh Fault since Holocene. This result is close to the latest results from GPS research .关键词
The Altyn Tagh fault/Strike-slip fault/Offset landform/Slip rateKey words
The Altyn Tagh fault/Strike-slip fault/Offset landform/Slip rate引用本文复制引用
Wang Feng,Li Ming,Xu Xiwei,Zheng Rongzhang,Chen Wenbin..Slip Rate on the Altyn Tagh Fault on the West of the Cherchen River (Between 85°～85°45′E) Since Late Quaternary[J].中国地震研究（英文版）,2004,18(4):396-405,10.基金项目
The project was supported by the "China Digital SeismicObservation Network Project". （）
