Chuanzhusi-Huanglong Strike-Slip Faults and a Transpressional Shear System in Songpan-Pingwu Area, Northwestern
- 责任者：Zhang Jiasheng (Institute of Geology ; China Earthquake Administration ; Beijing 100029 ; China) ; Huang Xiongnan
- 刊名：Earth Science Frontiers
- 出版年：2010
- 卷期：17(4)
- 关键词：走滑断层 ; strike-slip faults ; 转换断层 ; transform faults ; 四川 ; Sichuan Province
- 页码：p.15-32
- 图表：18 illus., 1 table, 33 refs.
- 分类号：0300
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
Relics of fault age cliff in Carboniferous carbonate rocks are one of the distinct landforms resulted from neotectonic movement in the study area. Frictional traces and kinematic indicators on various fracture surfaces within the relics demonstrated that a nearly EW trending, left lateral strike-slip fault extending from Chuanzhusi in the west to Huanglong village in the east occurred since the Medio-Pleistocene. The recognized Chuanzhusi-Huanglong strike-slip fault cut off an older SN trending Minjiang thrusting system, running eastwards, following and reworking the previous Xueshan Thrust Belt, and finally transforming itself into three alternating fault components: 1) growing into a group of NE trending shear bands at its northern side; 2) becoming interlayer-gliding at its front where the layering subparallel to the fault; and 3) transforming its movement sense to be an oblique down slip along a SN trending Huya thrust at its southern side.