基于磁法的隐伏沉积变质型铁锰矿勘探研究——以青海洪水河铁锰矿区为例  

Exploration of Hidden Sedimentary Metamorphic Iron Manganese Ore Based on Magnetic Method-Taking the Hongshui River Iron and Manganese Mine Area in Qinghai Province as An Example

作　　者：朱丹 陈鹏飞 柳维君 张皓 邓浩然[1] ZHU Dan;CHEN Pengfei;LIU Weijun;ZHANG Hao;DENG Haoran(Regional Geological Survey Team of Sichuan Geological and Mineral Exploration and Development Bureau,Chengdu 610213,China;Sichuan Institute of Metal Geology Survey,Chengdu 611730,China;Sichuan Institute of Geophysics Survey,Chengdu 610036,China)

机构地区：[1]四川省地质矿产勘查开发局区域地质调查队,四川成都610213 [2]四川省金属地质调查研究所,四川成都611730 [3]四川省地球物理调查研究所,四川成都610036

出　　处：《四川有色金属》2024年第2期32-36,40,共6页Sichuan Nonferrous Metals

基　　金：中国地质调查局基金项目(中国地质调查局发展研究中心资[2014]03-001-065号)

摘　　要：洪水河铁锰矿床是近年来东昆仑地区铁锰矿勘查的重要发现,通过研究区域地质特征了解总体成矿背景,在成矿有利地带首先进行1:10000高精度磁法测量,圈定磁异常带并进行数据处理,综合分析地球物理特征预测找矿靶区,再对磁异常浓集中心典型剖面进行2.5D反演,结合地质资料预测矿层在深部空间的赋存状态及变化特点;最后对异常进行钻探验证,提出高精度磁法在东昆仑地区及类似地质背景下探测隐伏沉积变质型铁锰矿的有效性。The Hongshuihe iron manganese deposit is an important discovery in the exploration of iron manganese deposits in the East Kunlun region in recent years.By studying the regional geological characteristics to understand the overall ore-forming background,high-precision 1:10000 magnetic measurement was first carried out in the favorable ore-forming zone,magnetic anomaly zones were delineated and data processing was carried out.The geophysical characteristics were comprehensively analyzed to predict the prospecting target area.Then,2.5D inversion was performed on the typical profile of the magnetic anomaly concentration center,Predicting the occurrence status and variation characteristics of ore layers in deep space based on geological data;Finally,the anomalies were verified through drilling,and the effectiveness of high-precision magnetic methods in detecting hidden sedimentary metamorphic iron manganese deposits in the East Kunlun region and similar geological backgrounds was proposed.

关 键 词：磁法勘探 沉积变质型铁锰矿 2.5D反演 空间定位预测 钻探验证 

分 类 号：P618[天文地球—矿床学]