地质与勘探2018，Vol.54Issue(1)：138-147,10.
山东夏甸地区金矿床地球物理场特征
Characteristics of Geophysical Fields Around Gold Deposits in the Xiadian Region,Shandong Province
摘要
Abstract
The Jiaodong area of Shandong Province is a famous gold production area in China. The deep gold-bearing fracture zone is closely related to gravity and magnetic fields. By establishing comprehensive prospecting indicators dominated by gravity and magnetic information,the prospecting target range can be further reduced. Taken,a typical gold deposit in the Xiadian region as an example,based on maps of Bouguer gravity anomalies,residual gravity anomalies, and ΔT reduction to the pole anomalies,this work discussed characteristics of the gravity and magnetic fields around the gold deposits. Combined with known geological sections and the results of CSAMT section interpretation,the physical features of low density,low magnetism and low re-sistance are demonstrated from gravity,magnetic and electric fields. In addition,the mineralization conditions of the gold deposits in this area were sum-marized and the geological and geophysical models were established. On this basis,a set of combination processes of gold exploration geophysical technolo-gy was discussed. The favorable mineralization area was delineated based on the gravity and magnetic area,and then gravity and magnetic profiles were de-signed. The position and occurrence of the ore-controlling structure are determined using the results of joint inversion. Finally,according to the results of the low resistance area(zone) from CSAMT measurement the orebody location was further inferred. The research results have important guiding signifi-cance for prospecting deep concealed gold deposits on the Zhaoyuan - Pingdu fault.关键词
夏甸/重力场/磁场/CSAMT/金矿/山东Key words
Xiadian/gravity field/magnetic field/CSAMT/gold mine/Shandong分类
天文与地球科学引用本文复制引用
董健,陈磊,张贵丽..山东夏甸地区金矿床地球物理场特征[J].地质与勘探,2018,54(1):138-147,10.基金项目
国家重点研发计划(2016YFC0600107)和中国地质调查局项目(编号:12120114034101)共同资助. （2016YFC0600107）
