东秦岭造山带伏牛山南麓地面高精度磁测找矿示范——以河南省南召县石林沟铁锰矿床为例  

Demonstration of ground high-precision magnetic survey for prospecting at the southern foot of Funiu Mountain in the East Qinling Orogenic Belt:an example of Shilingou iron-manganese deposit in Nanzhao County,Henan

作　　者：李冰 邢尚鑫 尚建阁 陈传浩 李晨晖 谢崇 LI Bing;XING Shangxin;SHANG Jiange;CHEN Chuanhao;LI Chenhui;XIE Chong(Henan Research Centre of Mineral Exploration Engineering and Technology for Non-ferrous Metals Resources,Zhengzhou 450016,Henan,China;The Second Geological Brigade of Henan Province Non-ferrous Metals Geological and Mineral Resources Bureau,Zhengzhou 450016,Henan,China;Natural Resources Science and Technology Innovation Center of Henan Province(Research on Mine Ecological Environment Protection and Restoration),Zhengzhou 450016,Henan,China;General Institute of Non-ferrous Metals Geologic Exploration of Henan Province,Zhengzhou 450052,Henan,China;Key Laboratory of Deep Ore-prospecting Technology Research for Nonferrous Metals of Henan Province,Zhengzhou 450052,Henan,China;Henan Non-ferrous Geology and Mineral Resources Co.,Ltd.,Zhengzhou 450016,Henan,China)

机构地区：[1]河南省有色金属矿产探测工程技术研究中心,河南郑州450016 [2]河南省有色金属地质矿产局第二地质大队,河南郑州450016 [3]河南省自然资源科技创新中心(矿山生态环境保护修复研究),河南郑州450016 [4]河南省有色金属地质勘查总院,河南郑州450052 [5]河南省有色金属深部找矿勘查技术研究重点实验室,河南郑州450052 [6]河南有色地质矿产集团有限公司,河南郑州450016

出　　处：《矿产与地质》2021年第5期933-939,共7页Mineral Resources and Geology

基　　金：中国地质调查局区域地质调查项目(编号:12120114035101);河南省国土资源厅2009年度“两权价款”地质科研项目(编号:2010-61-4);2014年度“两权价款”地质科研项目(编号:2015-258-16)共同资助。

摘　　要：文章主要介绍了南召县石林沟铁锰矿床的地质特征以及在该区开展地面高精度磁测方法进行找矿并取得成功的经验。该测区铁锰矿床的成因与岩体和断层息息相关,为准确圈定测区内岩体的边界和断层的位置,利用高精度磁法获取的数据,进行化磁极、化极磁异常垂向一阶导数和归一化总水平导数垂向导数处理,根据对磁法数据的处理结合该区地质和矿产分布特征,推断出区内4处地质体边界和4条断层,并选取重点异常区磁测剖面进行2.5D人机交互反演,反演结果与钻孔验证吻合较好,证明了本次选用的磁测数据处理方法的正确性和地面高精度磁法在该区寻找铁锰矿床的有效性,为后期在该区找矿突破和找矿思路指明了方向。This paper mainly introduces the geological characteristics of Shiliangou Fe-Mn deposit in Nanzhao County,Henan Province,and the successful experience of prospecting with high precision magnetic survey method in this area.The origin of Fe-Mn deposits in the survey area is closely related to rock mass and fault.In order to accurately delineate the boundary of rock mass and the location of fault structure in the survey area,the data obtained by high-precision magnetic method are processed by the vertical first derivative,the normalized total horizontal derivative and vertical derivative of reduction to the pole and pole-reduced magnetic anomaly.According to the magnetic data and the mineral distribution,four geological boundaries and four faults are inferred.The 2.5D human-computer interactive inversion in the key magnetic anomaly area is well supported by the drilling verification.It is proved for the correctness of the magnetic data processing methods and the effectiveness of the ground high-precision magnetic survey method in the exploration of Fe-Mn deposit.It points out the prospecting direction in this area.

关 键 词：伏牛山南麓 铁锰矿床 高精度磁法测量 2.5D人机交互反演 南召县 河南 

分 类 号：P631.3[天文地球—地质矿产勘探] P618.31[天文地球—地质学]