汾东断裂甘亭段浅部构造特征  

Shallow Structural Characteristics of the Ganting Section of Fendong Fault

作　　者：沈阳 巩一帆 张涛 张慧利 赵豫 袁燕 杜婉怡 SHEN Yang;GONG Yifan;ZHANG Tao;ZHANG Huili;ZHAO Yu;YUAN Yan;DU Wanyi(Mineral Resources Exploration Center of Henan Geological Bureau,Zhengzhou 450053,China;Natural Resources Science and Technology Innovation Center of Henan Province(Geophysical Deep Exploration Research),Zhengzhou 450053,China)

机构地区：[1]河南省地质局矿产资源勘查中心,郑州市450053 [2]河南省自然资源科技创新中心(地球物理深部探测研究),郑州市450053

出　　处：《大地测量与地球动力学》2024年第11期1125-1130,共6页Journal of Geodesy and Geodynamics

基　　金：河南省地质矿产勘查开发局局管地质科研项目(豫地矿科研[2017]03号)。

摘　　要：利用浅层人工地震勘探技术对临汾盆地汾东断裂进行探测,获得2条高分辨率地震勘探剖面,分析汾东断裂甘亭段浅部地层和断裂基本特征。结果表明,甘亭段浅部地层均呈现西倾形态,整体西厚东薄;汾东断裂甘亭段走向北东,倾向北西,视倾角67°~72°,断层落差26~182m,可辨别的最浅上断点埋深85m,为第四纪活动断裂。对比研究汾东断裂北部甘亭段、南部临汾段剖面特征,认为甘亭段新生代活动强度高于临汾段,汾东断裂活动强度由北向南逐渐降低。We detect the Fendong fault in Linfen basin using shallow artificial seismic exploration technology,obtain two high-resolution seismic exploration profiles,and analyze the basic characteristics of shallow strata of Ganting section of Fendong fault.The results indicate that the shallow strata of Ganting section shows a west-dipping morphology,with the overall thickness decreasing from west to east.The Ganting section of Fendong fault is characterized by a north-east strike,a north-west dip,a visual dip angle of 67°-72°,and a fault drop of 26-182 meters.The shallowest upper breakpoint that can be identified is buried at a depth of 85 meters,indicating a Quaternary active fault.By comparing the profile characteristics of Ganting section in the north and Linfen section in the south of Fendong fault,we infer that the activity intensity of Ganting section during the Cenozoic is higher than that of Linfen section,and the activity intensity of Fendong fault gradually decreases from north to south.

关 键 词：临汾盆地 汾东断裂 反射地震勘探 浅层构造 

分 类 号：P313[天文地球—固体地球物理学]