青海省都兰县阿斯哈金矿区HySpex高光谱矿物填图及其找矿意义
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中国地质调查“航空高光谱遥感调查”(编号:12120113073000)项目和青海省地质勘查基金“青海哈日扎-果洛龙洼地区航空高光谱测量及靶区优选”(2013年度科研项目)项目联合资助


HySpex Hyperspectral Mineral Mapping of Asiha Gold Ore District in Dulan County Qinghai Province and Its Prospecting Implications
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    摘要:

    地面成像高光谱遥感具有图谱合一的优势,能够根据光谱特征进行地物的直接识别,是遥感领域的前沿方向。本文针对青海省都兰县阿斯哈金矿区蚀变带,建立了HySpex地面成像高光谱数据的标准处理流程,采用基于统计学模型的平场域法进行了光谱重建,基于专家知识选取了端元光谱,利用MTMF方法开展了矿物填图,在此基础上制作了阿斯哈金矿区蚀变带比例尺1∶100的真彩色图像和褐铁矿、绢云母等5种地物的高光谱地物分布图。总结出阿斯哈金矿区标志性蚀变矿物为褐铁矿和绢云母,并对提取出的地物进行了野外实地ASD光谱测量验证,符合程度好。阿斯哈金矿区HySpex地面成像高光谱数据应用实践表明该数据在地质领域具有较好的应用效果和广泛的前景。

    Abstract:

    The ground-based imaging hyperspectral remote sensing, having an advantage of integrated image and spectrum, is a frontier direction in the remote sensing field, and it can be applied to directly identifying surface objects based on spectral characteristics. This study took the imaging hyperspectral data for alteration belts in the Asiha gold ore district of Dulan county as an example, established a standard data processing workflow, in which the flat field method based on statistical models was applied to reconstruct spectrum, and the end member selection based on expert knowledge was utilized for mineral mapping using MTMF method. Based on above, true color images at a scale of 1∶100 and distribution of five hyperspectral surface objects (limonite, muscovite, etc.) were mapped. It is concluded that the typical alteration minerals in this ore district are limonite and muscovite, and ideal results are achieved after field verification using ASD spectral measurements. It is suggested that the ground-based imaging hyperspectral data have good application results and show a promising potential in geology.

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孙雨,赵英俊,李瀚波,陆冬华,田丰,秦凯,杨国防,周家晶,刘鹏飞.2015.青海省都兰县阿斯哈金矿区HySpex高光谱矿物填图及其找矿意义[J].地质学报,89(1):195-203.
SUN Yu, ZHAO Yingjun, LI Hanbo, LU Donghua, TIAN Feng, QIN Kai, YANG Guofang, ZHOU Jiajing, LIU Pengfei.2015. HySpex Hyperspectral Mineral Mapping of Asiha Gold Ore District in Dulan County Qinghai Province and Its Prospecting Implications[J]. Acta Geologica Sinica,89(1):195-203.

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  • 收稿日期:2014-06-13
  • 最后修改日期:2014-10-18
  • 录用日期:2015-01-27
  • 在线发布日期: 2015-02-02
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