Physics
Scientific paper
Aug 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29o..14k&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 15, pp. 14-1, CiteID 1719, DOI 10.1029/2002GL015392
Physics
50
Planetology: Solar System Objects: Mars, Planetary Sciences: Glaciation, Planetary Sciences: Remote Sensing, Planetary Sciences: Polar Regions
Scientific paper
High-resolution altimetry and imaging have revealed the presence of a meters-thick sedimentary layer at middle to high northern and southern latitudes presently covering at least 23% of the planet. The layer is interpreted to be water-ice-rich, and to undergone degradation recently. Its activity very likely coincided with the last major obliquity excursion a few hundred thousand years ago. The majority of the layer at higher latitudes, however, persisted for a much longer time in the Late Amazonian. Stratigraphic analysis suggests a complex history of successive episodes of deposition and removal. Repeated deposition and removal of the mantles are interpreted to be responsible for the unusual statistical properties of kilometer-scale topography in the transitional mid-latitude zones.
Head James W.
Kreslavsky Mikhail A.
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