干旱半干旱高寒山区蚀变矿物遥感信息提取效果与找矿预测

Remote sensing information extraction and prospecting prediction of altered minerals in arid and semi-arid cold highland area

新疆阿尔金地区位于阿尔金成矿带,属于干旱半干旱高寒山区景观区,该区成矿条件优越,但自然地理条件较差,基岩裸露利于蚀变矿物准确提取,采用CASI/SASI航空高光谱遥感进行蚀变矿物遥感信息提取及找矿预测,可以克服自然条件影响,降低成本。本文以CASI/SASI航空高光谱遥感数据为数据源,以干旱半干旱高寒山区景观区为研究背景,评价研究该区CASI/SASI航空高光谱蚀变矿物遥感信息提取效果,通过野外地质调查,发现了镍、铁、钴、钒、钛、铜等元素多金属矿化线索,并最终圈定了YC01和YC02等两处找矿预测区。说明CASI/SASI航空高光谱遥感在干旱半干旱高寒山区蚀变矿物遥感信息提取效果显著。

A-erh-chin region of Xinjiang is located in the A-erh-chin metallogenic belt and is a landscape area of arid and semi-arid cold highland area with favorable ore-forming conditions and poor natural geographical conditions. Outcropped bed rocks are in favor of accurate extraction of altered minerals. The application of CASI/SASI aerial hyperspectral remote sensing in remote sensing information extraction of altered minerals and prospecting prediction has advantages of overcoming the influence of natural conditions and lowering the cost. This paper used CASI/SASI aerial hyperspectral remote sensing data as data source in the research background of landscape area of arid and semi-arid cold highland area, and it analyzed and evaluated the effect of CASI/SASI aerial hyperspectral remote sensing information extraction. Through field geological survey, the authors found clues of polymetallic mineralization of elements like Ni,Fe,Co,V,Ti and Cu, and blocked out two prospecting prediction regions namely YC01 and YC02. The results indicated that CASI/SASI aerial hyperspectral remote sensing achieved significant results in remote sensing information extraction of altered minerals in arid and semi-arid cold highland area.