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New evidence of lacustrine basins on Mars - Amazonis and Utopia PlanitiaeAmazonis and Utopia Planitiae are two large basins on Mars that have morphologic features commonly associated with former standing bodies of water. Like Elysium, the basins exhibit terraces and lineations resembling shorelines, etched and infilled floors marked by sinuous channels in places, inflow channels along their borders, and other geomorphic indicators believed to be related to the presence of water and ice. Moreover, most of the shoreline features have consistent elevations of about -1000 m, which suggests that the bodies of water thought to have occupied the basins may once have been connected. Although the concept of large paleolakes in the northern lowlands of Mars might be expanded to include inland seas, it is still premature to advance this hypothesis at the present stage of investigation. Even though these postulated paleolakes are very young in the Martian stratigraphic sequence, they are probably much older than large Pleistocene lakes on earth, and their shoreline features are less well preserved.
Document ID
Document Type
Conference Paper
Scott, David H.
(NASA Headquarters Washington, DC United States)
Chapman, Mary G.
(NASA Headquarters Washington, DC United States)
Rice, James W., Jr.
(NASA Headquarters Washington, DC United States)
Dohm, James M.
(USGS Flagstaff, AZ, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1992
Subject Category
Lunar And Planetary Exploration
Meeting Information
Lunar and Planetary Science Conference(Houston, TX)
Accession Number
Funding Number(s)
Distribution Limits

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