地面高精度磁法激电中梯及激电测深在蒙古前巴音钼矿区的综合应用.DOC

DOI:10.3969/j.issn.1671-4172.2011.03.009 综合物探方法在蒙古国钼矿床的应用 詹华明1(，高明程2，郭维1，范丽平1 (1.天津华北地质勘查局地质研究所，天津　300181；2．正元地球物理有限责任公司，河北 保定071051) 摘 要：在充分研究地质资料的基础上，综合运用高精度磁法和激发极化(IP)等物探手段隐伏矿体预测发现了与成矿有关的5处异常地段，新矿体处。经，磁异常揭露了北东向赋矿构造的特征及范围，提供有关构造格架和控矿因素等方面的信息，为研究区的矿床成因、寻找新的矿体提供可靠的依据。钻孔验证在异常部位发现工业矿体见矿率达94 %，说明快速、高效的综合物探评价体系在蒙古国某钼矿的应用是有效的。 关键词：综合物探；高精度磁法；激发极化(IP)；隐伏矿1671- 4172(2011)02-000-00 Application of integrated geophysical prospecting method on the evaluation of one molybdenum deposit in Mongolia ZHAN Huaming1(, GAO Mingcheng 2, GUO Wei1, FAN Liping1 (1.Institute of Geology, Tianjin Geological Exploration Bureau of North China, Tianjin 300181, China; 2. Zhengyuan Geophysical Limited Liability Company, Baoding Hebei 071051, China) Abstract: In the area of exploration covered thickness and complicated geological conditions, how to search for concealed ore deposit was the important issue in global mineral exploration field. According to geology data and concrete geology fact, geophysical methods including high-precision magnetic method and IP were used to integrated the prospecting of the concealed ore body，which discovered five clear geophysical anomalies relating to metallogenic prospects and two industrial ore bodies. The magnetic anomalies revealed the characteristics of the ore-bearing structure and scope of the NNE belt, provided some information of ore body structural framework, controlling-ore factors, genesis of molybdenum deposits. These information provided reliable basis to explain the metallogenic causes and find new buried ore bodies in the area. Three checking drill-holes occur industrial ore body, the rate of industrial ore discovery was 94%. It indicated that the integrated geophysical method system was successful in one molybdenum deposit, with its advantage in rapidity, efficiency and practicality. Key words: integrated geophysical prospecting; high-precision magnetic survey; IP; concealed ore body 引言 在覆盖厚、埋藏深、地质条件复杂的地区寻找隐伏的矿产资源，是目前国内外矿产资源勘查领域共同面临的重要问题采用综合物探方法