重庆城口修齐锰矿AMT法深部找矿预测
An Application of Audio-frequency Magnetolelluric in Xiuqi Manganese Deposit,Chengkou,Chongqing
黄朝阳 1张自贤 2冉瑞清 2高彩霞 3吴文英4
作者信息
- 1. 重庆工程职业技术学院,重庆 402260;中国科学院广州地球化学研究所,广东广州 510640
- 2. 重庆市地质矿产勘查开发局205地质队,重庆 402160
- 3. 重庆工程职业技术学院,重庆 402260;中国矿业大学地球科学与测绘工程学院,北京 100083
- 4. 重庆工程职业技术学院,重庆 402260
- 折叠
摘要
重庆城口是我国锰矿重要产地之一.由于大规模矿业开发,使得城口地区锰矿资源枯竭,急需在深部及外围发现新资源.在研究城口修齐锰床成矿地质背景、矿体赋存地层、岩性及岩石物理参数基础上,对成矿条件优越地段进行音频大地电磁测深法(AMT)测试研究.通过数据处理,生成修齐锰矿电阻率剖面图,其结果较好的反映深部地层分布及断裂构造位置.结合实测剖面及钻探验证,显示音频大地电磁测深法反演的深部地层、断裂构造及隐伏锰矿赋存位置十分吻合,找矿效果良好,AMT方法为城口地区锰矿深部勘查起到指示作用.
Abstract
Chongqing is one of important manganese ore places of origin in China. In recent years,due to large-scale mining development,we have made the manganese resources depletion in Chengkou county of Chongqing. To solve the lack of manganese resources in this area,we have found new resources in deep and peripheral areas. Based on the ore-forming geological background,including ore-bearing strata,petrological characteristics and geophysical parameters,we will be using audio-frequency magnetotelluric method(AMT)in favorable conditions for mineralization. The pseudo resistivety section chart was built after an analysis of the treatment of testing data. It preferably reflects the strata and structural features in the deep of Xiuqi area. Geological section and drill data show that AMT can be inferred in the location and scale of buried strata,including structures and distributions of series of strata with manganese in the investigation area. AMT method can accurately reflect the distribution of the strata with manganese ore bodies. It has taken a guide for the deployment of manganese exploration in Chengkou area.
关键词
音频大地电磁法/深部预测/修齐锰矿/陡山沱组Key words
Audio-frequency magnetotelluric method/Deep exploration/Xiuqi manganese deposit/Doushantuo group引用本文复制引用
出版年
2017
NETL
NSTL
维普
万方数据