Abstract To study the space distribution and the shallow structure characteristic of fault zone in western piedmont of Longquanshan, we carry out a detailed field geological survey, shallow seismic section and high density resistivity detection. We discuss the fault activity based on the drilling analysis and chronological test data. The results show: there is a blind thrust fault in western Longquanshan, which is the branch of Longquanshan fault, and the tendency of the branch fault is SE. The upper fault point stops in the Holocene clay stratum, belongs to the Holocene active fault. The branch fault of Longquanshan tectonic belt is proved in the process of the thrusting from the Longquanshan to the Chengdu basin; its existence also proves that the tectonic stress is with heterogeneity, and we cannot ignore that this continuous tectonic deformation causes the earthquake risk.
ZHANG Wei,ZHOU Rongjun,HE Yulin et al. Characteristic of Shallow Structure and Fault Activity in Western Piedmont of Longquanshan[J]. jgg, 2020, 40(9): 942-946.
ZHANG Wei,ZHOU Rongjun,HE Yulin et al. Characteristic of Shallow Structure and Fault Activity in Western Piedmont of Longquanshan[J]. jgg, 2020, 40(9): 942-946.