Lithologic and mineral information extraction for gold exploration using   ASTER data in the south Chocolate Mountains (California)

doi:10.1016/j.isprsjprs.2007.04.004

CORC > 北京大学 > 地球与空间科学学院

	Lithologic and mineral information extraction for gold exploration using ASTER data in the south Chocolate Mountains (California)
	Zhang, Xianfeng ; Pamer, Micha ; Duke, Nonnan
刊名	isprs journal of photogrammetry and remote sensing
	2007
关键词	ASTER sensor constrained energy minimization subpixel unmixing lithologic classification alteration mineral detection SPACEBORNE THERMAL EMISSION REFLECTION RADIOMETER ASTER ARID REGIONS LANDSAT TM IMAGES DISCRIMINATION HYPERION USA
DOI	10.1016/j.isprsjprs.2007.04.004
英文摘要	An ASTER image covering the south Chocolate Mountains area, California, U.S.A. was evaluated for gold-related lithologic mapping and alteration mineral detection. A supervised classifier was first applied to the 14-channel ASTER radiance data to map lithologies related to gold deposits. Subsequently, four alteration indices were extracted from the six SWIR channels and transformed to delineate alteration zones using a PCA transformed mineralogic indices approach. Finally, a subpixel unmixing algorithm, the constrained energy minimization (CEM) technique was used to detect significant alteration minerals using the ASTER VNIR and SWIR surface reflectance data and reference spectra from the ASTER spectral library. The classification results show that the ASTER data were capable of mapping flood basalt, quartz-biotite gneiss, muscovite schist, granitic, volcanic, and metasedimentary rock units. The ASTER-derived rock units show excellent correlation with those on the reference geologic map. The overall classification accuracy is 82% and the Kappa coefficient 0.76. A group of gneisses, locally the most favorable host rocks of gold deposits, were mapped with the ASTER data with a Producer's accuracy of 86%, and more importantly were also mapped in some areas that were not shown on the field geologic map. Four alteration minerals: alunite, kaolinite, muscovite and montmorillonite were detected by subpixel unmixing analysis of the ASTER reflectance data. This study compared different methods for extracting mineralogic information from ASTER data, compared the remotely derived maps to the mapped field geology, and used the ASTER data to map minerals and lithologies related to gold exploration. (C) 2007 International Society for Photogrammetty and Remote Sensing, Inc. (ISPRS). Published by Elsevier B.V All rights reserved.; Geography, Physical; Geosciences, Multidisciplinary; Remote Sensing; Imaging Science & Photographic Technology; SCI(E); 0; ARTICLE; 4; 271-282; 62
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/156003]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhang, Xianfeng,Pamer, Micha,Duke, Nonnan. Lithologic and mineral information extraction for gold exploration using ASTER data in the south Chocolate Mountains (California)[J]. isprs journal of photogrammetry and remote sensing,2007.
APA	Zhang, Xianfeng,Pamer, Micha,&Duke, Nonnan.(2007).Lithologic and mineral information extraction for gold exploration using ASTER data in the south Chocolate Mountains (California).isprs journal of photogrammetry and remote sensing.
MLA	Zhang, Xianfeng,et al."Lithologic and mineral information extraction for gold exploration using ASTER data in the south Chocolate Mountains (California)".isprs journal of photogrammetry and remote sensing (2007).