Economic Geology · 1983 · 59 citations · 0 references
Natural SciencesEarth SciencesGeologyEnvironmental GeologyRemote SensingVolcanologyHyperspectral ImagingMineral ClassificationMultispectral ImagingRemote Sensing Change DetectionRemote Sensing Image AnalysisRock ClassificationAlteration MappingHydrothermal AlterationHydrothermal Alteration DetectionHydrothermal Alteration MappingMultispectral AnalysisMultispectral Image AnalysisMultispectral SensingRemote Sensing Of Hydrothermal Alteration
Airborne multispectral scanner. A color composite image was constructed using the following spectral band ratios: 1.6/2.2 mu m, 1.6/0.48 mu m, and 0.67/1.0 mu m. The color ratio composite successfully distinguished most types of altered rocks from unaltered rocks; further division of altered rocks into ferric oxide-rich and -poor types.--Modified journal abstract.