RESEARCH ON EXTRACTION OF REMOTE SENSING ALTERATION ANOMALIES IN JIAMA COPPER DEPOSIT IN GANGDISE METALLOGENIC BELT, TIBET

SONG Wan-jiao; HU Dao-gong; ZHANG Xu-jiao; XIONG Pan; LI Bo; Zhao Zhao

2012 Vol. 18, No. 3

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SONG Wan-jiao, HU Dao-gong, ZHANG Xu-jiao, XIONG Pan, LI Bo, 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.

Citation:

RESEARCH ON EXTRACTION OF REMOTE SENSING ALTERATION ANOMALIES IN JIAMA COPPER DEPOSIT IN GANGDISE METALLOGENIC BELT, TIBET

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

Received Date: 06 April 2012

Publish Date: 25 September 2012

Abstract

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.
- metallogenic belt of Gangdise /
- Jiama copper deposits /
- ASTER /
- alterative information

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References

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