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GCM Simulations of Tropical Ice Accumulations: Implications for Cold-based GlaciersEach of the three Tharsis Montes shield volcanoes on Mars has fan-shaped deposits on their flanks. A detailed analysis of the multiple facies of the Arsia Mons deposits, coupled with field observations of polar glaciers in Antarctica, shows that they are consistent with deposition from cold-based mountain glaciers. Key features of these glaciers are: (1) they formed only on the western flank of each volcano, (2) enough ice accumulated to cause them to flow but without basal melting, (3) there were multiple advances and retreats, (4) the last major glaciation was more than several million years ago, (5) the areal extent of the deposits they left behind decreases northward, (6) together the deposits range in elevation from a low of 1.5 to a high of 8.5 km, and (7) there are no signs that significant accumulation is occurring today.
Document ID
20040055911
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Haberle, R. M.
(NASA Ames Research Center Moffett Field, CA, United States)
Montmessin, F.
(NASA Ames Research Center Moffett Field, CA, United States)
Forget, F.
(Paris VI Univ. France)
Levrard, B.
(Centre National de la Recherche Scientifique Paris, France)
Head, J. W., III
(Brown Univ. Providence, RI, United States)
Laskar, J.
(Centre National de la Recherche Scientifique Paris, France)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Mars Polar Science and Exploration
Subject Category
Lunar And Planetary Science And Exploration
Distribution Limits
Public
Copyright
Public Use Permitted.
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