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| 西藏冈底斯成矿带甲马段蚀变遥感异常信息提取研究 | |
| 引用本文： | 宋晚郊,胡道功,张绪教,熊攀,李波,赵钊.西藏冈底斯成矿带甲马段蚀变遥感异常信息提取研究[J].地质力学学报,2012,18(3):319-330. |
| 作者姓名： | 宋晚郊 胡道功 张绪教 熊攀 李波 赵钊 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京,100083 2. 中国地质科学院地质力学研究所,北京,100081 3. 中国地震局地震预测研究所,北京,100036 |
| 基金项目： | 国家发改委高技术产业化示范工程项目"基于我国卫星的野外地质调查应用高技术产业化示范工程"，中国地质调查局项目"西藏冈底斯及邻区深部过程与构造岩浆成矿研究" |
| 摘 要： | 以西藏冈底斯成矿带甲马铜矿作为研究区,基于围岩矿化蚀变理论,利用ASTER遥感影像对矿化异常信息进行提取.首先对ASTER影像进行预处理,包括重采样、辐射定标、大气校正和去干扰;然后对甲马矿床内典型矿物蚀变(矽卡岩化、绿泥石化、碳酸盐化)信息进行探测,以USGS光谱库内典型蚀变矿物的波谱特征为参照编制矿物特征分析表并进... |
| 关 键 词： | 冈底斯成矿带 甲马铜矿 ASTER 蚀变信息 |
| 收稿时间： | 2012/4/6 0:00:00 |
RESEARCH ON EXTRACTION OF REMOTE SENSING ALTERATION ANOMALIES IN JIAMA COPPER DEPOSIT IN GANGDISE METALLOGENIC BELT, TIBET |
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| SONG Wan-jiao,HU Dao-gong,ZHANG Xu-jiao,XIONG Pan,LI Bo and ZHAO Zhao.RESEARCH ON EXTRACTION OF REMOTE SENSING ALTERATION ANOMALIES IN JIAMA COPPER DEPOSIT IN GANGDISE METALLOGENIC BELT, TIBET[J].Journal of Geomechanics,2012,18(3):319-330. | |
| Authors: | SONG Wan-jiao HU Dao-gong ZHANG Xu-jiao XIONG Pan LI Bo and ZHAO Zhao |
| Institution: | 1(1.College of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China; 2.Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China; 3.Institute of Earthquake Science,China Earthquake Administration,Beijing 100036,China) |
| Abstract: | Taking Jiama Copper of Gangdise area in Tibet Province as research area, based on the theory of surrounding rock mineralized alteration, the alterative information was extracted by ASTER data. First, ASTER data was preprocessed which included resampling, radiometric calibration, atmospheric correction and filtering interference. Then the typical mineral alteration (skarnization, chloritization, carbonatization) in Jiama copper was detected. Taking the spectral characteristics of typical altered minerals in USGS spectral library as reference, the analysis table of mineral characteristics, and analysis the spectral character were carried. Based on the previous experiment, we contrasted and summarized the methods, and then chosen eigenvector groups of each alterative type, with extracting three corresponding kinds of alterative mineralize information. Finally, compositing three kinds of alteration overlap regions; it coincided with the former research results, which indicated that this method had guidance in similar area for extracting alterative information. |
| Keywords: | metallogenic belt of Gangdise Jiama copper deposits ASTER alterative information |
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