基于机载高光谱蚀变信息与成矿地质环境分析的矿床定位研究

Deposit location determination based on hyperspectral alteration information from airborne hyperspectral images and metallogenic geologic environment

以青海省格尔木市小干沟地区为研究区域,以CASI/SASI机载高光谱蚀变信息提取为基础,提出机载高光谱蚀变信息成矿分析及成矿地质环境分析的基本思路,构建了机载高光谱矿床定位模型。将矿床定位模型应用于小干沟金矿区并在其南部地区开展野外调查验证。验证结果证明:利用机载高光谱蚀变信息与成矿环境分析相结合的方法建立的矿床定位模型在小干沟南部地区查证效果较好,值得在该区推广应用。

In this paper , the research region is Xiaogangou area of Golmud , Qinhai Province .It based on CASI/SASI hyperspectral alteration information extraction proposed the basic ideas of the mineralization analysis and the analysis of metallogenic geologic environment by airborne hyperstpectral alteration information , and built the air-borne hyperspectral model of ore deposit location .The model of ore deposit location is applied in Xiaogangou Gold Mine,and the outdoor field investigation is carried out in the southern part to verify it .The results showed that the ore deposit location built by combining the airborne hyperspectral alteration information and the the analysis of metallogen -ic geologic environment achieved favorable effects in the southern part of Xiaogangou Gold Mine .It is worth promotion and application in this region .