新疆地区西昆仑和田玉遥感信息提取与找矿远景区圈定  

Extraction of Remote Sensing Information and Delineation of Prospecting Targets of Hetian Jade in WestKunlun, Xinjiang

作　　者：董振 荆林海 施光海[1] 丁海峰[2,3] 武唅 DONG Zhen;JING Linhai;SHI Guanghai;DING Haifeng;WU Han(China University of Geosciences(Beijing),Beijing 100083;Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094;International Research Center of Big Data for Sustainable Development Goals,Chinese Academy of Sciences,Beijing 100094)

机构地区：[1]中国地质大学(北京),北京100083 [2]中国科学院空天信息创新研究院数字地球重点实验室,北京100094 [3]中国科学院可持续发展大数据国际研究中心,北京100094

出　　处：《地质与勘探》2024年第3期539-551,共13页Geology and Exploration

基　　金：国家自然科学基金面上项目(编号:41972308);科技部“第二次青藏高原综合科学考察研究”专项之课题“资源能源战略储备综合评估(编号:2019QZKK0806)”联合资助

摘　　要：新疆地区和田玉主要产在西昆仑至阿尔金一带,这些地区属于高海拔和严寒地区,难以直接开展地质调查工作。当前遥感技术已在热液型矿床的找矿工作中取得重要进展。和田玉矿床属于热液型矿床,地表会留下明显的矿物蚀变信息,通过遥感信息技术寻找和田玉矿床在理论上是可行的。本次研究在西昆仑康西瓦地区,使用哨兵二号、ASTER等多光谱数据和高分5号高光谱数据提取与和田玉矿化有关的蚀变信息,构建了一个以蚀变信息为主的遥感找矿找矿模型,圈定了多处和田玉遥感找矿远景区,并对找矿远景区进行了野外验证。在选取的多个和田玉遥感找矿远景区内,发现了和田玉矿的典型蚀变类型,即蛇纹石化与透闪石化,以及多处出露地表的大理岩和多处正在开采的玉石矿。野外验证结果表明,本次研究采用的和田玉遥感勘查技术是有效的。Hetian jade in Xinjiang was mainly produced in the area from West Kunlun to Altun.These areas are high altitude and cold regions,so it is difficult to carry out geological survey directly.The current remote sensing technology has made significant progress in the exploration of hydrothermal deposits.The Hetian jade deposit is a hydrothermal deposit,leaving obvious mineral alteration information on the surface.It is theoretically feasible to find the Hetian jade deposit through remote sensing information technology.In this study,in Kangxiwa area of West Kunlun,multispectral data such as S2A and ASTER and hyperspectral data such as Gaofen 5 are used to extract alteration information related to Hetian jade mineralization,build a remote sensing prospecting model based on alteration information,delineate several Hetian jade remote sensing prospecting prospect areas,and conduct field verification of prospecting prospect areas.In several selected Hetian jade remote sensing prospecting prospect areas,typical alteration types of Hetian jade deposit,namely serpentinization and tremolite,as well as marble outcrops and jade mines under mining,have been found.The field verification results show that the Hetian jade remote sensing exploration technology used in this study is effective.

关 键 词：遥感 蚀变信息 遥感找矿模型 和田玉 西昆仑 新疆 

分 类 号：P627[天文地球—地质矿产勘探]