摘要
基于高密度电法反演成果,结合钻探、探井等工程勘察手段对苏码头断裂的形迹展布及构造形态等进行调查研究,同时对苏码头断裂通过处地貌进行观测,并对溪流阶地进行14 C测定,结果为13436±210~40724±6332 a,表明苏码头断裂晚更新世以来未活动。综合认为,苏码头断裂为一条NNE向隐伏断层,走向约25°,倾向SE,倾角约65°,破碎带宽度约为20 m,最新活动时代为中更新世。
Based on the high density electrical inversion results,we investigate and study the trace distribution and structural features of Sumatou fault combing with drilling,exploration well and other engineering survey methods.We observe the terrain of Sumatou fault,and conduct 14 C dating of stream terraces.The dating result is 13436±210~40724±6332 a,indicating that the Sumatou fault has not been active since the late Pleistocene.It is concluded that the Sumatou fault is an NNE trending buried fault with a strike of about 25°,a tendency of SE,a dip angle of about 65°,and a fractured zone width of about 20 m.The latest active age of Sumatou fault is the middle Pleistocene.
作者
匡野
魏柯佳
肖瑞卿
杨程成
KUANG Ye;WEI Kejia;XIAO Ruiqing;YANG Chengcheng(Sichuan Institute of Geological Engineering Investigation Group Co Ltd,119 Xiqing Road,Chengdu 610072,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2024年第3期316-320,共5页
Journal of Geodesy and Geodynamics
关键词
高密度电法
隐伏断裂
断层活动性
high density electrical method
buried faults
fault activity
