Abstract:The geological and geophysical characteristics of the Yunxian basin segment of Yunyang-Yunxi faults are studied through geological survey and geophysical exploration. According to multiple position acquisition of Yunyang-Yunxi faults, material fracture SEM, TL test results, and combined with the data of the upper fault point sediment OSL, the Quaternary activity of the segment is analyzed. The results show that the Yunyang-Yunxi faults in the Yunxian basin section are relatively deep, the fracture characteristics are mainly reverse faults, and some branch faults show positive fault characteristics. The latest active age of the fault zone is the late Middle Pleistocene to the early Late Pleistocene.
LIN Song,LI Yuan,WANG Wei et al. Study on Geological and Geophysical Features of Yunxian Basin Segment of Liangyun Fault Belt[J]. jgg, 2019, 39(2): 148-152.