青海卡尔却卡地区遥感找矿信息提取研究  

Research on Extraction of Remote Sensing Alteration Anomalies in the Kaerqueka District in Qinghai Province

作　　者：穆媛芮[1] 朱玉芳[1] 孔婕[2] 张建收[1] Mu Yuanrui;Zhu Yufang;Kong Jie;Zhang Jianshou(No.11 Geological Team,XinJiang Bereau of Geology and Mineral Resources,Changji,Xinjiang,831100,China;No.9 Geological Team,XinJiang Bereau of Geology and Mineral Resources,Urumqi,Xinjiang,835400,China)

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第十一地质大队,新疆昌吉831100 [2]新疆维吾尔自治区地质矿产勘查开发局第九地质大队,新疆乌鲁木齐市835400

出　　处：《新疆地质》2017年第2期211-215,共5页Xinjiang Geology

基　　金：东昆仑成矿带矿产资源遥感综合调查(12120113045200)资助

摘　　要：本次研究以青海卡尔却卡铜多金属矿区为例,采用ASTER数据,据矿区蚀变矿物类型,利用主成分分析方法,提取了卡尔却卡地区钾化、碳酸盐化、高岭土化、绢云母化、青磐岩化、黄铁矿化和矽卡岩化7类遥感蚀变异常。经实地验证,蚀变强区域与各类遥感异常重叠,与矿区蚀变带分布吻合。同时,卡尔却卡铜多金属矿区附近的遥感蚀变分布具分带特征,从遥感角度证明卡尔却卡铜多金属矿为典型斑岩型矿床。该区域建立遥感成矿模型,为卡尔却卡及周边找矿起指导意义。The Qinghai Kaerqueka copper polymetallic mining district is taken for the study example in this paper.Based on using ASTER data,the remote sensing alteration anomalies are extracted by using the directional principal component analysis.According to mining alteration types,the alteration anomaly of seven types such as potassic,carbonation,kaolin-based,sericite,propylitization,pyrite and skarnization are extracted.The strong alteration region is the position of Various types of the extracted abnormal superimposed,while the extracted alteration information in the study area has good alteration zonation,alteration information located in the vicinity of Yelasai I copper deposits reflect the alteration zoning patterns of porphyry deposits.This paper has a good effect on the guiding of the mine exploration in the Kaerqueka and its surrounding area,it also provides a remote sensing basis for the evaluating of the prospecting and integrated forecasting of potential mineral resources.

关 键 词：青海 卡尔却卡地区 ASTER 蚀变 异常 斑岩型蚀变分带 

分 类 号：P627[天文地球—地质矿产勘探]