NDLI: Analysis of pyroxene absorptions observed in martian dark regions

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Analysis of pyroxene absorptions observed in martian dark regions

Content Provider	NASA Technical Reports Server (NTRS)
Author	Miller, J. S. Singer, R. B.
Copyright Year	1993
Description	We have investigated the mineralogy of the Martian dark regions by analysis of the pyroxene Fe(2+) absorption band near 1.0 micron in a set of VIS/NIR reflectance spectral images. The data used for these analyses were selected from a larger set, extending from 0.44 to 1.02 microns, obtained during the close 1988 opposition and covering substantially all of Mars south of 40 degrees N. This data set is being used in regional mapping of spectral parameters related to surface mineralogy. Martian dark regions are of interest in reconstructing the geologic history because they contain exposures of unaltered or little-altered basaltic crustal material; mapping differences in composition among dark regions could reveal regional or temporal variation in magmatic activity or mantle source composition. Two types of dark regions are seen, with the pyroxene band present and absent; where present, the inferred composition is in the range pigeonite-augite to very high-Fe, low-Ca pyroxene, with a two-pyroxene mixture possible.
File Size	121513
Page Count	2
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19940011938
Archival Resource Key	ark:/13960/t8md3v77q
Language	English
Publisher Date	1993-01-01
Access Restriction	Open
Subject Keyword	Lunar And Planetary Exploration Pyroxenes Planetary Geology Mineralogy Mars Surface Absorption Spectra Infrared Imagery Spectral Reflectance Crusts Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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