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Chinese Academy of Geological Sciences (2006)

The Study Of Spectral Feature And Extraction Of Remote Sensing Alteration Anomalies For Metallic Ore Deposits In Gobi Arid Zone And Application In Mineral Resources

Yao Fo Jun

Titre : The Study Of Spectral Feature And Extraction Of Remote Sensing Alteration Anomalies For Metallic Ore Deposits In Gobi Arid Zone And Application In Mineral Resources

Auteur : Yao Fo Jun

Grade : Master’s Theses 2006

Université : Chinese Academy of Geological Sciences

Résumé partiel
China’s mineral resources shortage has become a major bottleneck constraining economic sustainable development. It is an effective technical means to apply remote sensing technology to study geological background, to do geological survey, to prospect and evaluate mineral resources. Currently, remote sensing techniques have been developed to master 5S (RS for Remote Sensing, GIS for Geographical Information System, GPS for Global Positioning System, ES for Expert System, DPS for Digital Photogram metric System).In this paper, the various typical deposits forming regularities have been studied in East Tianshan mountains Gobi desert, on the basis of that, we use remote sensing information processing technology to extract remote sensing anomaly information of various type deposits, then to test and verify optimized targets, and have achieved good results for deposit exploration. Therefore, the techniques have important theoretical and practical significance. The paper study focused spectrum characters and absorption characters of ASTER homologous bands, on basis of that, we respectively extract remote sensing anomaly information of various type deposits from ASTER and ETM+, which enrich remote sensing anomaly information extraction methods, broaden applications of remote sensing in mineral resources prospecting and evaluation.I have participated in national research project named“Optimization of prospecting targets in Tianshan mountains copper ore belt”guided mentor, and twice conduct field geological work in Sinkiang in 2004 and 2005. I have collected samples which come from the mafic and ultramafic Cu-Ni deposits of eastern huangshan mountains, white rock font, luodong, tenth slope, first slope, tianyu, tianxiang, tulaergen, calabash, northern radish, duck font, a string of beads, horse hoof, hongshigang, the skarn Pb-Zn deposits of shaquanzi, lead camp stove, baiyuan, the altered type Au deposits of tianmu, laojindong, the molybdenum deposit of white mountains, and have photographed field photographs. I measured 2000 spectrums use PIMA, analysed and studied spectrum characters of various typical deposits, and extract remote sensing anomaly information of 3600 km2 ASTER and 31000 km2 ETM+, and identified 25 photic slicesin microscope. Following conclusions have been gained:1. Different types of mineral deposits have different altered minerals compounding, which of the skarn Pb-Zn deposit in shaquanzi areas are calcite, antigorite, chlorite, illlite, dolomite, hornblende, which of the mafic and ultramafic Cu-Ni deposit in huangshandong areas are chlorite, illite, calcite, tremolite, antigorite, epidote, hornblende, which of the altered type

Mots clés : Remote Sensing, ASTER, ETM +, Altered Mineral Spectrum of Typical Mineral Beds, Principle Component Analysis(PCA), Spectral Angle Mapper(SAM), Supervised, Remote Sensing Anomaly Information, East Tianshan Mountains, Sinkiang

Présentation (Dissertationtopic )

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