热红外航空高光谱蚀变信息找矿应用研究  

Ore-prospecting application research of alteration information determined by thermal infrared aerial hyperspectral remote sensing data technology

作　　者：邓国武[1] 汪冰[1] 王少帅[1,3] 田丰 魏本赞[1,3] DENG Guowu;WANG Bing;WANG Shaoshuai;TIAN Feng;WEI Benzan(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shi jiazhuang 050002;Beijing Research Institute of Uranium Geology,Beijing 100029;Faculty of Earth Sciences,East China Institute of Technology,Nanchang 330013)

机构地区：[1]核工业航测遥感中心,石家庄050002 [2]核工业北京地质研究院,北京100029 [3]东华理工大学地球科学学院,南昌330013

出　　处：《矿产勘查》2020年第2期344-351,共8页Mineral Exploration

基　　金：中国地质调查局项目(编号:12120113099700)资助。

摘　　要：航空热红外(TASI)高光谱遥感数据具有高光谱分辨率和高空间分辨率特征,能获取多种地物的特征光谱,据此识别岩石、矿物等相关信息。文章利用航空热红外高光谱遥感数据(TASI)在北山成矿带(甘肃花牛山地区)进行蚀变矿物信息提取,在分析花牛山地区地质特征、构造特征、矿产特征及热红外光谱蚀变信息分布特征的基础上,剖析了区内铅锌矿床的热红外航空高光谱蚀变信息类型及其组合特征,认为花牛山地区"硅化+矽卡岩化"蚀变组合指示了铅锌矿床的产出位置及成矿环境,据此建立了基于花牛山铅锌矿的热红外航空高光谱蚀变信息找矿标志,并结合地质条件圈定两片成矿有利区,在圈定的成矿有利区发现了铅锌矿化。Thermal infrared aerial hyperspectral remote sensing data( TASI) has the characteristics of high spectral resolution and high spatial resolution,which can help us to obtain spectrum features of multiple ground objects to identify rock,mineral and other related information. On the basic of geological features,structural features,mineral features and alteration information distribution features extracted by TASI,the author analyzed alteration information and its combination feature of Beishan mineralization zone( Hua niushan area in Gansu Province). The result showed that"silication + karnization"alteration combination is a benefit feature to indicate occurrence location and mineralization environment. Furthermore the author found prospecting signs for Pb-Zn deposit based on thermal infrared airborne hyperspectral alteration information. Uniting geological setting,the author frame two advantages metallogenic area where Pb-Zn mineralization has been found eventually.

关 键 词：热红外航空高光谱 蚀变信息 铅锌多金属矿 花牛山地区 甘肃 

分 类 号：TP7[自动化与计算机技术—检测技术与自动化装置]