柳园-方山口地区航空高光谱遥感固体矿产探测及找矿效果

发布时间：2018-04-18 01:17

本文选题：航空高光谱遥感 + 数据采集　；参考：《地质学报》2017年12期

【摘要】：高光谱遥感技术找矿应用是当前遥感地质领域研究的前缘和热点,国内外都在积极进行探索。本文依托国土资源部航空物探遥感中心高光谱遥感地质找矿项目,利用核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室拥有的国内唯一一台CASI/SASI/TASI航空高光谱成像系统,在甘肃北山柳园-方山口地区,共采集了3500km2的高空间分辨率的高光谱遥感数据。经数据预处理,光谱重建和蚀变矿物填图,开展了航空高光谱遥感固体矿产的探测研究。从航空高光谱遥感的新角度,研究了柳园-方山口地区的区域成矿背景,构建了研究区成矿构造格架(非构造格架),提出黑石山-花牛山深大断裂带为柳园-方山口地区的区域控矿断裂,其呈EW向区段为该区最佳找矿地段的新认识。探讨了固体矿产高光谱遥感矿床定位模型的建模思路、方法,构建了研究区金属矿产的矿床定位系列模型。强调模式找矿是高光谱遥感找矿的有效途径,在研究区开展了模式找矿的示范应用,发现了7处找矿靶区,取得了明显的找矿效果。实践表明,高光谱遥感技术在地质找矿中有其独特的优势,主要是可快速、大面积地提取蚀变矿物,特别是航空高光谱遥感技术,由于可以获得高空间分辨率(可达亚米级)的高光谱遥感数据,从而可以识别规模小的近矿围岩蚀变,找矿实际上就是找近矿围岩蚀变,从这层意义上讲,航空高光谱遥感技术具有直接找矿的效果。航空高光谱遥感的快速、大面积地提取蚀变矿物的技术优势是迄今为止其他地质勘查方法无法替代的。因此,在地质找矿中应充分发挥高光谱遥感技术的重要作用。
[Abstract]:The application of hyperspectral remote sensing technology in prospecting is the front and hot spot in the field of remote sensing geology, and it is actively explored at home and abroad.This paper relies on the Hyperspectral remote Sensing Geological Prospecting Project of the Aeronautical Geophysical remote Sensing Center of the Ministry of Land and Resources,The only CASI/SASI/TASI aerial hyperspectral imaging system in China, owned by the National key Laboratory of remote Sensing Information and Image Analysis Technology of the Beijing Geological Research Institute of Nuclear Industry, is located in the Liuyuan-Fangshankou area of Beishan, Gansu Province.The high spatial resolution hyperspectral remote sensing data of 3500km2 are collected.After data preprocessing, spectral reconstruction and altered mineral mapping, the exploration of airborne hyperspectral remote sensing solid minerals was carried out.The regional metallogenic background of Liuyuan-Fangshankou area was studied from the new perspective of aerial hyperspectral remote sensing.The ore-forming tectonic framework (non-structural framework) in the study area is constructed. It is proposed that the deep fault zone of Heishishan-Huaniushan is a regional ore-controlling fault in Liuyuan-Fangshankou area, and the EW direction is the best ore prospecting area in this area.This paper discusses the modeling idea and method of hyperspectral remote sensing deposit location model for solid mineral resources, and constructs a series of models for the location of metal ore deposits in the study area.It is emphasized that model prospecting is an effective way for hyperspectral remote sensing prospecting. The demonstration application of model prospecting has been carried out in the study area, and 7 prospecting targets have been found, and obvious prospecting results have been obtained.Practice shows that hyperspectral remote sensing technology has its unique advantages in geological prospecting, mainly because it can extract altered minerals quickly and in a large area, especially aerial hyperspectral remote sensing technology.Because hyperspectral remote sensing data with high spatial resolution (up to the sub-meter level) can be obtained, it is possible to identify the alteration of the surrounding rock near the ore on a small scale. In fact, prospecting is the alteration of the surrounding rock near the ore. In this sense,Aerial hyperspectral remote sensing technology has the effect of direct prospecting.The rapid and large area extraction of altered minerals by aerial hyperspectral remote sensing is irreplaceable by other geological exploration methods.Therefore, hyperspectral remote sensing technology should play an important role in geological prospecting.
【作者单位】：核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室;中国国土资源航空物探遥感中心;
【基金】：中国地质调查局《航空高光谱遥感矿床定位模型与预测技术研究》项目(1212011220277) 中核集团龙腾二期项目“铀及多金属矿产勘查高光谱遥感综合应用示范”(遥LTY1604) 国家自然科学基金项目“航空高光谱识别的高、中、低铝绢云母成因机理研究”(41772354)联合资助的成果
【分类号】：P627

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