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Amazonis and Utopia Planitiae: Martian Lacustrine basinsAmazonis and Utopia Planitiae are two large (greater than 10(exp 6) sq. km) basins on Mars having morphological features commonly associated with former lakes. The investigation of these areas is an extension of our previous paleolake studies in the Elysium basin. Using Viking images, we are searching for familiar geologic forms commonly associated with standing bodies of water on Earth. Like Elysium, the two basins exhibit terraces and lineations resembling shorelines, etched and infilled floors with channel-like sinuous markings in places, inflow channels along their borders, and other geomorphic indicators believed to be related to the presence of water and ice. In some areas these features are better displayed than in others where they may be very tenuous; their value as indicators can be justified only by their association with related features. Even though these postulated paleolakes are very young in the Martian stratigraphic sequence, their shoreline features are poorly preserved and they are probably much older than large Pleistocene lakes on Earth.
Document ID
Document Type
Conference Paper
Scott, David H. (Geological Survey Flagstaff, AZ, United States)
Rice, James W., Jr. (Geological Survey Flagstaff, AZ, United States)
Dohm, James M. (Geological Survey Flagstaff, AZ, United States)
Chapman, Mary G. (Geological Survey Flagstaff, AZ, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1992
Publication Information
Publication: Lunar and Planetary Inst., Workshop on the Martian Surface and Atmosphere Through Time
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.
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