Physics
Scientific paper
Aug 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mpse.conf...61h&link_type=abstract
International Conference on Mars Polar Science and Exploration, p. 61
Physics
Mars (Planet), Antarctic Regions, Geomorphology, Lakes, Structural Basins, Valleys, Climate, Carbon 14, Deltas, Shorelines, Glaciers
Scientific paper
At the last glacial maximum (approx. 10,000-20,000 years before present), the Dry Valleys of Antarctica (77 deg-78 deg south, 160 deg-164 deg east) supported huge closed-basin lakes (up to 212 sq km, 550 m deep), significantly larger than any lake that exists in the region today (less than 7 sq km, commonly less than 70 m deep). The existence, elevation, and volume of these former lakes have been determined by mapping widespread geomorphic features, such as deltas and shorelines. Chronology comes from over 500 accelerator mass spectrometry (AMS) radiocarbon dates of benthic algal mats preserved within the lacustrine deposits. Additional information can be found in the extended original abstract.
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