基于遥感技术的新疆大南湖一带地区矿化蚀变信息提取

Extraction of Mineralized Alteration Information in the Area of Xinjiang Da'nanhu Based on Remote Sensing Technology

选择新疆大南湖一带大白地幅1∶50 000区域范围为研究对象,利用高分一号、ETM+影像数据对区内岩性、构造进行解译,通过主成分分析法和比值法结合ETM+和ASTER影像数据对区内矿化蚀变信息进行提取,分析矿化蚀变与地层岩性、构造之间的关系,并通过研究区已知矿点验证该区域矿化蚀变信息提取的可靠性,可为今后开展地质找矿工作提供前期技术手段。

The paper chose the Dabaidi, Da′nanhu of Xinjiang by 1 ∶50 000 as a study area, identified rock natures and interpretedrock structures using the GF-1 and ETM＋ satellite data. Through PCA and ratio method combining ASTER and ETM＋image data formineralized alteration information extraction, analysis of mineralized alteration and the relationship between the formation technologyand structure. The reliability of the mineralized alteration information in this area can be verified by the known mining point in the research area, which can provide early technical means for geological prospecting.