| 南秦岭上高家庄航空物探异常地质成因和找矿潜力 |
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| 引用本文： | 朱宏伟,朱卫平,徐璐平,米耀辉,张迪硕,李海镪.南秦岭上高家庄航空物探异常地质成因和找矿潜力[J].地质论评,2021,67(1):14-26. |
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| 作者姓名： | 朱宏伟 朱卫平 徐璐平 米耀辉 张迪硕 李海镪 |
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| 作者单位： | 中国自然资源航空物探遥感中心，北京，100083;中国地质大学（北京），北京，100083 |
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| 基金项目： | 本文为国家重点研发计划课题（编号：2017YFC0602106、2017YFC0602201）、中国地质调查项目（编号：121201203000160006）的成果 |
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| 摘 要： | 为探索和改进综合航空物探深部找矿模式,在南秦岭研究区最新航空数据基础上,结合岩性、构造及周边矿化点等特征,按一定条件优选出上高家庄磁、放综合异常进行重点研究。所选异常位于陕西省安康市石泉县北,经地面磁力、γ能谱、岩(矿)石物性等剖面测量及基础地质工作,知异常东北侧主要岩性为变质砂岩,西南侧多为云母石英片岩。铀元素放射性含量在两类岩性交界面的变质砂岩一侧最高,地表测得的最高含量超过70×10-6 eU。推测铀异常主要为变质砂岩造成,磁异常由一定埋深的区域变质片岩(原岩为火山岩)引起。以样品鉴定的矿化迹象为佐证,此处具有形成铁、铜、铀等矿产的前景。由空中数据优选异常,进而有效聚焦至地面重点区域,通过数据分析、实地测量、采样等验证手段,探究异常成因,是一种研究隐伏矿体,圈定找矿远景区的高效工作模式。
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| 关 键 词： | 南秦岭 航放综合异常 异常优选 剖面测量 隐伏矿体 |
| 收稿时间： | 2020/6/4 0:00:00 |
| 修稿时间： | 2020/12/10 0:00:00 |
Geological analysis and prospecting potential of aero magnetic and radioactive comprehensive anomaly at Shanggaojia village in southern Qinling Mountains |
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| ZHU Hongwei,ZHU Weiping,XU Luping,MI Yaohui,ZHANG Dishuo,LI Haiqiang.Geological analysis and prospecting potential of aero magnetic and radioactive comprehensive anomaly at Shanggaojia village in southern Qinling Mountains[J].Geological Review,2021,67(1):14-26. |
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| Authors: | ZHU Hongwei ZHU Weiping XU Luping MI Yaohui ZHANG Dishuo LI Haiqiang |
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| Institution: | China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing, 100083; China University of Geosciences(Beijing), Beijing, 100083 |
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| Abstract: | The Shanggaojia village comprehensive anomaly(magnetic and radioactive),which is located at the northern part of Shiquan County Ankang City,Shaanxi Province,is optimized for further study based on the latest airborne geophysical data of southern Qinling Mountains research area,in order to find and improve the aero geophysical deep prospecting method.It should be combined with the characteristics of lithology,structure and surrounding mineralized points,and optimized according to certain conditions.It is found that the northeast part of the anomaly is mainly composed of metamorphic sandstone,and the southwest part is mostly mica—quartz schist,by multiple methods surveying on the ground in profile form,including magnetic,gamma-ray spectrum,rock(ore)physical properties,and basic geological work.The Uranium radioactivity content is higher on the side of metamorphic sandstone near two types of lithologic junctions,with the maximum measured on the surface is not less than 70×10-6 eU.It is speculated that the Uranium anomaly is mainly caused by metamorphic sandstone,and the magnetic one is caused by metamorphic schist(original rock is volcanic rock)with a relatively larger buried depth.There is positive prospect for the formation of iron,copper,uranium and so on,supported by the mineralization signs found in the collected samples through professional identification.The anomalies are optimized from the aero data,so as to effectively focus on the key areas on the ground.After that,the cause of the anomaly is realized by means of data analysis,field measurement,sampling and other verification methods.It is an efficient working mode to study the concealed deposit and delineate the metallogenic prospect area. |
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| Keywords: | South Qinling Mountain comprehensive anomaly of airborne radioactivity optimized anomaly profile surveying concealed deposit |
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