Ice and debris in the fretted terrain, Mars

Journal of Geophysical Research



Viking moderate- and high-resolution images along the northern highland margin were studied monoscopically and stereoscopically to contribute to an understanding of the development of fretted terrain. Results support the hypothesis that the fretting process involved flow facilitated by interstitial ice. The process apparently continued for a long period of time, and debris-apron formation shaped the fretted terrain in the past as well as the present. Interstitial ice in debris aprons is most likely derived from ground ice obtained by sapping or scarp collapse. Debris aprons could have been removed by sublimation if they consisted mostly of ice, or by deflation if they consisted mostly of debris. To remove the debris, wind erosion was either very intense early in martian history, or was intermittent, perhaps owing to climatic cycles.
Publication type Article
Publication Subtype Journal Article
Title Ice and debris in the fretted terrain, Mars
Series title Journal of Geophysical Research
ISBN 0875902332
DOI 10.1029/JB089iS02p0B409
Volume 89
Issue S02
Year Published 1984
Language English
Publisher American Geophysical Union
Contributing office(s) Astrogeology Science Center
Description 10 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Geophysical Research
First page 409
Last page 418
Conference Title Proc of the 14th Lunar and Planet Sci Conf
Conference Location Houston, TX, USA
Conference Date 14 March 1984 through 15 March 1984
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