基于三维地质—地球物理模型的三维成矿预测——以安徽铜陵矿集区为例  

3D Metallogenic Prediction Based on 3D Geological-Geophysical Model:A Case Study in Tongling Mineral District of Anhui

作　　者：向杰[1,2] 陈建平[1,2] 胡彬[1,2] 胡桥[1,2] 杨伟[1,2] 

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]中国地质大学(北京)国土资源与高新技术研究中心,北京100083

出　　处：《地球科学进展》2016年第6期603-614,共12页Advances in Earth Science

基　　金：中国地质调查局项目"老矿山技术创新与示范"(编号:1212011220737)资助~~

摘　　要：三维成矿预测已经成为当前国内外矿产勘查与资源评价研究的重要途径和热点。以安徽铜陵矿集区为例,开展了基于三维地质—地球物理模型的三维成矿预测,研究内容为:1在25条综合剖面基础上建立了三维地质模型,并采用三维重磁反演获取深部的三维物性特征,进而建立了三维地质—地球物理模型;2结合前人的成矿理论研究,分别总结了层控矽卡岩型与接触交代矽卡岩型矿床的有利控矿要素,建立了综合信息定量预测模型;3采用"立方块预测模型"找矿方法,根据信息量值结合地质基本情况圈定了15个找矿远景区。该研究成功地构建了三维地质—地球物理模型,并在地质找矿理论指导下,基于不同矿床类型定量提取了找矿有利信息,将传统的二维综合信息找矿方法拓展到三维空间,对于老矿山找矿具有重要指导意义。3D metallogenic prediction is an important method and frontier of mineral resources exploration in the world. This paper introduces a case study of 3D metallogenic prediction based on 3D geological-geophysical model in Tongling mineral district. The research contents,methods,and results are summarized as the following aspects： 1Based on 25 comprehensive interpretation profiles,established 3D geological model of the study area. Using 3D property inversion of gravity-magnetic data technology to obtain 3D physical characteristics,a 3D geologicalgeophysical model was established; 2 Combined with the previous research on the metallogenic theory,this paper summed up some favorable geological conditions for ore-controlling,and established the quantitative prediction model; 3By using＂cubic predicting model＂prospecting method,delineated 15 predicted targets according to the value of information and geological condition. This research built the 3D geological-geophysical model successfully,and under the guidance of geological prospecting theory,quantitatively extract the favorable prospecting information based on different deposit types. This research extends the traditional regional metallogenic prediction method to 3D space,and it has important guiding significance for the old mine prospecting.

关 键 词：铜陵矿集区 地质—地球物理模型 定量预测模型 三维成矿预测 

分 类 号：P612[天文地球—矿床学]