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Identification of hydrothermal alteration assemblages using airborne imaging spectrometer dataAirborne Imaging Spectrometer (AIS) data, field and laboratory spectra and samples for X-ray diffraction analysis were collected in argillically altered Tertiary volcanic rocks in the Hot Creek Range, Nevada. From laboratory and field spectral measurements in the 2.0 to 2.4 micron range and using a spectroradiometer with a 4 nm sampling interval, the absorption band centers for kaolinite were loacted at 2.172 and 2.215 microns, for montmorillonite at 2.214 micron and for illite at 2.205. Based on these values and the criteria for resolution and separtion of spectral features, a spectral sampling interval of less than 4 nm is necessary to separate the clays. With an AIS spectral sampling interval of 9.3 nm, a spectral matching algorithm is more effective for separating kaolinite, montmorillonite, ad illite in Hot Creek Range than using the location of absorption minima alone.
Document ID
19870003544
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Feldman, S. C.
(Nevada Univ. Reno, NV, United States)
Taranik, J. V.
(Nevada Univ. Reno, NV, United States)
Date Acquired
August 13, 2013
Publication Date
August 15, 1986
Publication Information
Publication: JPL Proceedings of the Second Airborne Imaging Spectrometer Data Analysis Workshop
Subject Category
Earth Resources And Remote Sensing
Accession Number
87N12977
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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