基于沟里金矿集区线环构造与色调异常的找矿预测  

Ore Prediction Analysis Based on Line-ring Structure and Tone Anomaly in Gouli Gold Deposits

作　　者：余晓霞[1] 高建国[1] 潘亚茹[1] 王瑞雪[1] 

机构地区：[1]昆明理工大学,云南昆明650093

出　　处：《黄金科学技术》2014年第4期32-38,共7页Gold Science and Technology

基　　金：山东黄金集团科研项目"青海东昆仑东段沟里地区金矿(化)集区多元成矿信息融合与高效勘查示范研究"(编号:201122010100)资助

摘　　要：青海沟里金矿集区内构造形迹复杂,岩浆作用强烈,变形变质广泛,具备形成大型—特大型金矿床的地质条件。通过对整个矿集区及外围区域的QuickBird、ASTER以及ETM等不同分辨率的影像进行了人机交互式线环构造解译和色调异常分析,分析区域内典型金矿床的影像特征,并找出有利的成矿线环构造。将色调异常区域与化探结果进行对比分析,得出其吻合度较高。最后,结合地质资料、遥感信息和化探信息,对靶区进行分级,圈定出有利的找矿区域。Gouli gold deposits with complex structural features,intense magmatism, extensive deformation and metamorphism,it has the geological conditions of forming large-super large gold deposits.Based on the Quickbird, ASTER and ETM images of different resolution, we have been doing the man-machine interactive ring structural interpretation and tonal anomaly analysis.The analysis result shows that image features of typical gold deposits in the area and finds out the favorable metallogenic line-ring structures.Analysis of tone anomaly area and geochemical results concludes that its alignment is high.Finally,combining with geological data,remote sensing information and geochemical information,we have classified the target and marked out favorable prospecting area.

关 键 词：高精度遥感 环形构造 构造解译 遥感影像 找矿靶区 东昆仑造山带 

分 类 号：P618.51[天文地球—矿床学]