Mineral mapping and ore prospecting using Landsat TM and Hyperion data, Wushitala, Xinjiang, northwestern China
Mineral mapping and ore prospecting using Landsat TM and Hyperion data, Wushitala, Xinjiang, northwestern China
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使用 Landsat TM 和 Hyperion 数据进行矿物测绘和矿石勘探，中国西北部新疆乌什塔拉
DOI：
10.1016/j.oregeorev.2016.10.007
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发表时间：
2017-03
影响因子：
3.3
通讯作者：
Liu Lei
中科院分区：
文献类型：
--
作者：
Liu Lei
南天山地区位于亚洲中部，是我国重要的金成矿带之一，发现了多处世界级、超大型、大型金矿床。乌什塔拉地区位于中国新疆南天山东部，具有很强的金矿和其他金属矿床潜力。然而，过去没有关于乌什塔拉地区金属矿存款或矿点的详细报告，显然是由于勘探不力。本研究尝试将Landsat TM和TM遥感数据与ASTER光谱库矿物光谱相结合，在乌什塔拉地区进行蚀变带填图和找矿靶区的提取。将Crosta技术与异常叠加选择法相结合，对不同年份、同一季节的4期Landsat TM数据进行处理，消除了随机干扰造成的蚀变矿物（氧化铁、羟基矿物和碳酸盐岩）假异常，保留了真实的异常。应用匹配滤波方法对华北花岗岩围岩的热液蚀变矿物进行了详细识别。遥感数据的结果与陆地卫星TM数据的结果在空间上是一致的。此外，X射线衍射数据表明，与钾长花岗岩共生的蚀变矿物以白云母和针铁矿为主。在我们的实地考察中，对分布在整个研究区的14个地点（11个与酸性侵入有关，3个与构造有关）进行了检查，所有这些地点都被证明是地质成因的。我们的研究发现了三个与酸性侵入体和以前没有记录的结构有关的矿化位点。由于南天山带沿着广泛分布的酸性侵入体和构造，在更详细的调查中还发现了其他几个金铁铜矿化点。我们的找矿方法在研究区被证明是有效的，并在此建议在类似的地质环境中应用。
The Southern Tianshan area, situated in central Asia, is one of the most important gold belts identified by many world-class, superlarge and large gold deposits. The Wushitala area, located in the eastern part of Southern Tianshan, Xinjiang (China), has a strong potential for gold and other metallic mineral deposits. However, no metallic mineral deposit or occurrence has been reported in detail for the Wushitala area in the past, apparently due to poor exploration. This study attempts to map alteration zones and acquire ore prospecting targets in the Wushitala area by integrating Landsat TM and Hyperion data with the ASTER spectral library mineral spectra. The Crosta technique and the anomaly-overlaying selection method were combined to process four temporal Landsat TM data (acquired in the same season in different years) so as to eliminate the random interference-caused false anomalies of alteration minerals (iron oxides and hydroxyl-bearing minerals and carbonates) while retaining the real anomalies. The matched filtering method was applied on Hyperion data for the detailed identification of hydrothermally altered minerals surrounding the granites in the north. The results of Hyperion data are spatially consistent with those of Landsat TM data. Furthermore, the results of Hyperion data show that the alteration minerals associated with the potash feldspar granite are dominated by muscovite and goethite. In our field campaign, fourteen sites (eleven acid intrusion-related and three structure-associated) distributed throughout the study area were inspected, all of which proved to be of geological genesis. Our study led to the discovery of three mineralization sites associated with acid intrusions and structures that were not previously documented. Due to the extensively distributed acid intrusions and structures along the southern Tianshan Belt, several other gold-iron-copper mineralized locations could be found with more detailed investigations. Our mineral prospecting methodology proved effective in the study area and is hereby suggested for application in similar geological settings.
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DOI：
10.1016/j.patrec.2004.05.025
发表时间：
2004-06
期刊：
2004 International Conference on Communications, Circuits and Systems (IEEE Cat. No.04EX914)
影响因子：
--
作者：
Haixiang Xu;Guangxi Zhu;Haoyu Peng;De-Hong Wang
通讯作者：
Haixiang Xu;Guangxi Zhu;Haoyu Peng;De-Hong Wang
影响因子：
3.4
作者：
Qiuming Cheng Linhai Jing;A. Panahi
通讯作者：
Qiuming Cheng Linhai Jing;A. Panahi
DOI：
10.1111/j.1755-6724.2004.tb00148.x
发表时间：
2004-04
期刊：
Acta Geologica Sinica ‐ English Edition
影响因子：
--
作者：
Fu Shuixing;Zhang Shoulin;Liang Chunxia;Feng Jianzhong;Fang Tong-hui
通讯作者：
Fu Shuixing;Zhang Shoulin;Liang Chunxia;Feng Jianzhong;Fang Tong-hui
DOI：
--
发表时间：
1995-01
期刊：
--
影响因子：
--
作者：
J. Boardman;F. Kruse;R. Green
通讯作者：
J. Boardman;F. Kruse;R. Green
影响因子：
2.6
作者：
M. H. Zadeh;M. H. Tangestani;F. V. Roldan;I. Yusta
通讯作者：
M. H. Zadeh;M. H. Tangestani;F. V. Roldan;I. Yusta