Martian crater degradation by eolian processes: Analogy with the Rio Cuarto Crater Field, Argentina

Details Martian crater degradation by eolian processes: Analogy with the Rio Cuarto Crater Field, Argentina Martian crater degradation by eolian processes: Analogy with the Rio Cuarto Crater Field, Argentina

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24..559g&link_type=abstract

In Lunar and Planetary Inst., Twenty-Fourth Lunar and Planetary Science Conference. Part 2: G-M p 559-560 (SEE N94-16173 03-91)

Computer Science

Argentina, Mars Craters, Mars Surface, Meteorite Craters, Meteoritic Composition, Saudi Arabia, Sediments, Structural Basins, Analogies, Degradation, Deposition

Scientific paper

Numerous degraded and rimless craters occur across broad areas of the Martian surface that are mantled by thick, unconformable deposits. These regions include Arabia, Mesogaea, Electris, Tempe, the interior and surface to the northwest of Isidis Basin, southern Ismenius Lacus, and the polar layered terrains. Occurrence of the deposits and low regional thermal inertias indicate that at least some accumulated fine-grained sediment (effective particle diameters of 0.1-0.5 mm or coarse silt to medium sand) to a thickness of 100's to 1000's of meters. Most unconformable deposits experienced some eolian modification that may be recent in some locales. Despite the presence of these deposits, simple eolian deposition appears incapable of creating the numerous degraded and rimless craters occurring within their limits. Nevertheless, terrestrial analyses of the Rio Cuario craters formed into loessoid deposits demonstrates that eolian redistribution of fine-grained sediment in and around craters produces degraded morphologies that are analogous to some found in mantled regions on Mars.

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