综合地球物理方法在找矿靶区快速评价中的应用  

Application of the Comprehensive Geophysical Method in Rapid Evaluation of Ore Prospecting Target Areas

作　　者：张作伦[1,2] 曾庆栋[1] 于昌明[1] 叶杰[1] 刘红涛[1] 孙玥[3] 任东方[4] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中铁资源集团中铁资源地质勘查有限公司,北京100039 [3]西安科技大学人文与外国语学院,西安710600 [4]中央民族大学经济学院,北京100081

出　　处：《矿物岩石地球化学通报》2014年第5期747-752,共6页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家重点基础研究发展计划项目(2013CB429804)

摘　　要：为对工作程度较低的找矿靶区开展快速评价,针对中国新一轮"攻深探盲"找矿的需求以及矿床"三复杂"的现实,本文介绍了一套以电磁扫面-测深技术为主,磁法、化探等技术为辅的综合地球物理探测组合方法,及其在40余个矿床(点)的应用研究成果。以受岩体控制的小沟铁矿,受构造控制的白音他拉铅锌银矿点、云山金矿为例,详细介绍了应用该方法来识别一些在形态、产状上符合岩体或构造控矿特征的物探异常。同时结合地质研究,指出这些异常对岩体侵入通道、高磁异常体、含矿构造的指示作用。Mineral exploration work in China has already stepped into a stage of attacking deep layer to find hidden ore bodies.And the ore-forming geological conditions,the geological features of ore deposits,and the terrain of deposit locations are complex and varied.A set of geophysical exploration methods has been integrated on the basis of electromagnetic plane measurement,sounding technologies,supplementing by magnetic and geochemical exploration technologies to rapidly evaluate the prospecting target areas with limited exploration history,and then it is possible to provided useful information on further exploration scheme designing.We have used a comprehensive geophysical exploration method in more than 40 deposits （occurrences）.In this paper,three cases,Xiaogou iron deposit that controlled by intrusion,the Baiyingtala lead-zinc-silver ore occurrence and the Yunshan gold deposit that controlled by fracture zones,have been described as examples.It has been revealed by the geophysical methods that the unique morphology,the occurrence and the scale of the anomalies are consistent with the intrusion and fracture zones.Combined with geological studies,it is suggested that these anomalies could indicate intruded channels,high magnetic bodies and ore structures.Although ore prospecting is difficult,the set of regional applicable mineralization prediction theory and forecasting technology discussed in the paper have an important promoting role in regional prospecting.

关 键 词：地球物理勘探 成矿预测 多金属矿床 隐伏矿体 

分 类 号：P631[天文地球—地质矿产勘探]