Mineral resources prospecting by synthetic application of TM/ETM+, Quickbird and Hyperion data in the Hatu area, West Junggar, Xinjiang, China.
Mineral resources prospecting by synthetic application of TM/ETM+, Quickbird and Hyperion data in the Hatu area, West Junggar, Xinjiang, China.
复制标题
综合应用TM/ETM plus、Quickbird和Hyperion数据进行新疆西准噶尔哈图地区矿产资源勘查
DOI：
10.1038/srep21851
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发表时间：
2016-02-25
影响因子：
4.6
通讯作者：
Ji Z
中科院分区：
文献类型：
--
作者：
Liu L;Zhou J;Jiang D;Zhuang D;Mansaray LR;Hu Z;Ji Z
新疆西准噶尔哈图地区是一个与石英脉和小花岗岩侵入体有关的潜在金铜矿化带。为了识别本区的蚀变带和矿化产状，结合Landsat Thematic Mapper （TM）和Enhanced Thematic Mapper （ETM+）、Quickbird、Hyperion数据和实验室实测光谱，对构造、蚀变带、石英脉和小侵入体进行了识别。采用色调-饱和度-强度（HSI）颜色模型变换，将主成分分析（PCA）组合R（红色）、G（绿色）和B（蓝色）变换到HSI空间，增强故障。为了消除噪声的干扰，提出并实现了一种将Crosta技术与异常叠加选择相结合的方法。利用喷气推进实验室谱库光谱和实验室实测光谱，结合匹配滤波方法对Hyperion数据进行处理。此外，利用高分辨率Quickbird数据对石英脉和沿蚀变带的小侵入体进行了解理。首次发现宝贝断裂和西东向蚀变带。该研究最终通过地面检查发现了4个弱金铜矿化点，为该地区的成矿作用带来了新的地质知识。
The Hatu area, West Junggar, Xinjiang, China, is situated at a potential gold-copper mineralization zone in association with quartz veins and small granitic intrusions. In order to identify the alteration zones and mineralization occurrences in this area, the Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper (ETM+), Quickbird, Hyperion data and laboratory measured spectra were combined in identifying structures, alteration zones, quartz veins and small intrusions. The hue-saturation-intensity (HSI) color model transformation was applied to transform principal component analysis (PCA) combinations from R (Red), G (Green) and B (Blue) to HSI space to enhance faults. To wipe out the interference of the noise, a method, integrating Crosta technique and anomaly-overlaying selection, was proposed and implemented. Both Jet Propulsion Laboratory Spectral Library spectra and laboratory-measured spectra, combining with matched filtering method, were used to process Hyperion data. In addition, high-resolution Quickbird data were used for unraveling the quartz veins and small intrusions along the alteration zones. The Baobei fault and a SW-NE-oriented alteration zone were identified for the first time. This study eventually led to the discovery of four weak gold-copper mineralized locations through ground inspection and brought new geological knowledge of the region’s metallogeny.