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Morphology and composition of the surface of Mars: Mars Odyssey THEMIS results

Science

By:
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DOI: 10.1126/science.1080885

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Abstract

The Thermal Emission Imaging System (THEMIS) on Mars Odyssey has produced infrared to visible wavelength images of the martian surface that show lithologically distinct layers with variable thickness, implying temporal changes in the processes or environments during or after their formation. Kilometer-scale exposures of bedrock are observed; elsewhere airfall dust completely mantles the surface over thousands of square kilometers. Mars has compositional variations at 100-meter scales, for example, an exposure of olivine-rich basalt in the walls of Ganges Chasma. Thermally distinct ejecta facies occur around some craters with variations associated with crater age. Polar observations have identified temporal patches of water frost in the north polar cap. No thermal signatures associated with endogenic heat sources have been identified.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Morphology and composition of the surface of Mars: Mars Odyssey THEMIS results
Series title:
Science
DOI:
10.1126/science.1080885
Volume
300
Issue:
5628
Year Published:
2003
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2056
Last page:
2061
Number of Pages:
6