Quaternary Activity of Longxi-Huanghu Section of Huzhou-Lin'an Fault in Northwestern Zhejiang
CHEN Tao
SONG Fangmin
SUN Haiqing
YANG Fuping
YU Gangqun
Abstract：The Huzhou-Lin'an Fault is a large-scale NE-trending fault in Zhejiang region,witnessing the 2017 Lin'an M4.2 earthquake.The remote sensing image of the Longxi-Huanghu section of the Huzhou-Lin'an fault has obvious linear characteristics and has a significant control effect on the landform,with high mountains on the west side and a hilly plain transition zone on the east side.Through the analysis of the cross-fault geological profile and fault outcrop profile,it is concluded that the activity nature of the Longxi-Huanghu section of the Huzhou-Lin'an Fault is mainly a normal fault.Through field investigation,combined with satellite images and ESR age samples de-termination,it is determined that the fault is an active one in the early and middle Pleistocene of the Quaternary.
Keywords：Huzhou-Lin'an FaultField geological surveyESR age determinationNormal faultQuaternary activity
Publication Date：2025-06-30
Online Publishing Date：2025-08-25(First online date of this platform, not the publication date of the document)
Pages：8( 16-23 )