摘要
贵州黔西地区地质情况复杂,为查明地层展布和构造情况,以研究区区域重力资料为基础,推断密度界面起伏及区域性断裂构造展布;以区域重力资料推断结果为约束,反演大地电磁电性分界线及断裂;以大地电磁电性分界线和断裂构造为参考,正演拟合高精度重力实测曲线,以达到地球物理综合推断解释的目的,为更详细、准确地提取研究区地层、构造信息,并开展下一步页岩气勘探工作提供资料和依据。
West Guizhou has complicated geological conditions.In order to ascertain the strata distribution and structure conditions,based on the regional gravity data of the study area,the authors deduced the fluctuation of density interface and the distribution of regional faults.And then they used the deduction results of the regional gravity data to inverse magnetotelluric electrical demarcation line and faults.With magnetotelluric electrical demarcation line and faults as reference,they made forward modeling of high-precision gravity measured curve for comprehensive geophysical inference.The research can obtain more detailed and exact information of the strata and structures in the study area,and provide the data and basis for further exploration of shale gas.
作者
李家斌
屈念念
LI Jiabin;QU Niannian(Guizhou Institute of Geological Survey, Guiyang 550018, China;Guizhou Engineering Research Center for Geologic-Geophysical Exploration Development and Application, Guiyang 550018, China)
出处
《中国地质调查》
2018年第6期97-105,共9页
Geological Survey of China
基金
中央地勘基金"云南临沧-勐海地区1:25万区域重力调查(编号:基[2010]矿评03-02-10)""云南保山-巍山地区1:20万区域重力调查(编号:121201781007)"
贵州省地矿局地质科研基金项目"非震物探方法在页岩气勘探上的应用研究)(编号:黔地矿科合2016[33]号)""贵州省侵入岩体三维反演及空间形态研究)(编号:黔地矿科合2016[32])"
贵州省科学技厅"2018年度科技平台建设及人才团队计划项目(编号:黔科合平台人才[2018]5626)"联合资助
关键词
黔西地区
页岩气
高精度重力
大地电磁
West Guizhou
shale gas
high-precision gravity
magnetotelluric
