河南南阳南召北沟浅覆盖区综合勘查方法及深部找矿预测
Comprehensive exploration method and deep prospecting prediction in Nanzhaobeigou shallow overburden area of Nanyang City,Henan Province
权知心 1李香资 1谢国兴 1王秋云 1张猛 1郜朋飞1
作者信息
- 1. 河南省第二地质勘查院有限公司,郑州 460000
- 折叠
摘要
为了寻找一种快速、有效的适合覆盖区找矿的综合方法,在河南省南阳市南召北沟金多金属矿区进行了 1∶1万高精度磁法测量、激电中梯剖面及广域电磁测深相结合的地球物理方法实验性研究.结果表明:①1∶1万高磁能反映地质体及断裂构造的展布特征;②激电中梯剖面识别出的低阻高极化带由金属矿化蚀变引起;③ 广域电磁测深显示出深部异常与矿化蚀变带对应良好.经钻探工程验证,发现了规模较大的铅锌钨矿体.
Abstract
In order to find a rapid and effective comprehensive method for ore prospecting in overburden area,a 1∶10 000 high-precision magnetic survey,a IP mid-gradient profile and a wide-area electromagnetic sounding geophysics were carried out in Nanzhaobeigou gold polymetallic deposit of Nanyang City,Henan Pro-vince.The re-sults show that:① 1∶10 000 high magnetic survey reflects the distribution characteristics of geological body and fault structure.② The low resistance and high polarization zone identified by the IP mid-gradient profile is caused by mineralization alteration of metals.③ Wide-area electromagnetic sounding shows that the deep anomaly corre-sponds well with the mineralization alteration zone.A large-scale lead-zinc-tungsten orebody has been found through drilling engineering.
关键词
浅覆盖区/综合勘查方法/深部找矿预测/南召北沟Key words
shallow overburden area/comprehensived exploration method/deep prospecting prediction/Nanzhaobeigou引用本文复制引用
基金项目
河南省地质矿产勘查开发局项目(豫地矿科研[2021]Z-17号)
出版年
2024
NETL
NSTL
万方数据