| 李荣亮.甘肃王格尔塘地区地磁特征及找矿意义[J].地质与勘探,2018,54(3):592-602 |
| 甘肃王格尔塘地区地磁特征及找矿意义 |
| Geomagnetic characteristics of the Wangge’ertang area, Gansu Province and prospecting significance |
| 投稿时间：2017-11-22 修订日期：2018-12-28 |
| DOI：10.12134/j.dzykt.2018.03.015 |
| 中文关键词: 地磁特征 断裂构造 隐伏岩体 中酸性岩体 接触带 化探综合异常 甘肃 王格尔塘地区 |
| 英文关键词: geomagnetic characteristics, fault structure, concealed rock body, intermediate acid rock mass, contact belt, geochemical anomaly, Gansu Province, Wangge’ertang area |
| 基金项目:甘肃省矿产资源补偿费项目“甘肃省临夏州太子山-甘南州甘加乡一带1:5万矿产远景调查项目”资助 |
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| 中文摘要: |
| 甘肃甘南地区是甘肃省乃至我国金、铜、铅锌等金属矿产的重要富集区，金矿尤为突出。通过在王格尔塘地区系统地开展1:5万地面高精度磁测工作，从地磁角度研究区内地质构造，解译圈定隐伏岩体范围。在解释研究磁异常基础上，与化探水系沉积物综合异常进行对比研究，认为中酸性岩体引起的弱磁异常是该区寻找金、铜等热液型矿产的必要条件。综合研究地、物、化资料，提出了以“中酸性岩体-磁异常外缘-化探综合异常中心”为特征的地物化综合找矿方法，有效缩小了找矿范围，确定了找矿靶区。该方法可为甘肃甘南地区乃至西秦岭地区矿产勘查工作提供借鉴。 |
| 英文摘要: |
| The Gannan area is an important enrichment region of gold, copper, lead, and zinc and other metal minerals in Gansu Province, even in China, especially gold mines. Based on 1:5 million high-precision ground magnetic surveys, this work studied geological structures and delineated concealed rock bodies in the Wangge’ertang area of Gannan. Combining explanations of geomagnetic anomalies and geochemical anomalies of stream sediments, a comparative analysis was further made. It suggests that the weak magnetic anomalies caused by medium acid rock is a necessary condition for the prospecting of gold, copper and other hydrothermal minerals in this area. A comprehensive prospecting method of geology, geophysics and geochemistry was shaped, which is characterized by "medium-acid rock bodies, outer edges of magnetic anomalies and centers of geochemical anomalies". It permits to reduce the exploration scope and determine the target area, and provide a reference for mineral exploration in the Gannan area of Gansu, and even the West Qinling Mountains. |
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