| 任瑞,王勇,张先恒,刘强,李宏刚,杜海洋.遥感与化探在内蒙古乌力吉地区找矿中的应用[J].地质找矿论丛,2023,38(1):123-128 |
| 遥感与化探在内蒙古乌力吉地区找矿中的应用 |
| Application of remote sensing and geochemical techniques to ore prospecting in Wuliji area, Inner Mongolia |
| 投稿时间：2022-10-30 修订日期：2022-11-30 |
| DOI：10.6053/j.issn.1001-1412.2023.01.015 |
| 中文关键词: 乌力吉金矿 找矿靶区 遥感蚀变 岩石测量 内蒙古自治区 |
| 英文关键词:Wuliji area prospecting target area the remote sensing data-extracted alteration rock geochemical survey Inner Mongolia |
| 基金项目: |
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| 中文摘要: |
| 内蒙古阿拉善盟的乌力吉地区为荒漠戈壁景观区，面积约40 km2。针对该区的地质景观特点，在找矿工作中尝试遥感与化探方法相结合的勘查方式。首先开展多光谱遥感影像蚀变信息提取工作，从ETM+、ASTER影像中分别提取了羟基、矽卡岩化、碳酸盐化等蚀变异常，并对SiO2含量进行定量反演；然后优先在遥感蚀变异常区内开展1∶1万岩石地球化学测量，在先期划定的遥感异常区内圈定出以Au元素为主的大规模综合异常；在对该遥感-化探综合异常区的异常查证中，在钻孔中圈定出厚度超20 m的金矿体，获得快速找矿的效果，表明采用遥感蚀变提取与化探结合的方法在荒漠戈壁景观区找矿中可以快速缩小找矿靶区，提高找矿效率。 |
| 英文摘要: |
| Wuliji area covers an area of about 40 square kilometers with desert-Gobi landscape. The remote sensing-geochemical technique integration is applied to the ore prospecting. First alteration information of hydroxyl, skarnization, carbonation etc. is extracted from ETM+ and ASTER images and quantitative inversion of silica content made and alteration anomalies outlined; then rock geochemical survey at scale 1:10000 carried out and large Au-dominated integrated element anomalies lineated in the remote sensing anomalies. The integrated remote sensing-geochemical anomalies are checked by drilling with Au ore body more than 20 m thick encountered proving that the integration technique can quickly reduces the prospecting area and make ore-searching breakthrough in such desert Gobi area. |
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