Pre-Pleistocene glaciation on earth - Implications for climatic history of Mars

Details Pre-Pleistocene glaciation on earth - Implications for climatic history of Mars Pre-Pleistocene glaciation on earth - Implications for climatic history of Mars

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...50..423c&link_type=abstract

(Workshop on Quasi-Periodic Climatic Changes on Earth and Mars, Moffett Field, CA, Feb. 24-26, 1981.) Icarus, vol. 50, May-June

Computer Science

4

Climatology, Earth (Planet), Ice Environments, Mars (Planet), Polar Regions, Climate Change, Eccentric Orbits, Fossils, Geology, Plates (Tectonics), Solar Orbits

Scientific paper

On earth, climatic fluctuations which occur on a time scale of 10,000-100,000 years, and are driven by orbital parameters, are demonstrably periodic. Controls for climatic variation on a time scale of 1-10 million years are less well understood, but may also be related to atmospheric composition, tectonism, and variations in solar output. An understanding of the causes of earth's ancient ice ages suggests uniformitarian and nonuniformitarian concepts of the ancient climates of Mars. Fossil polar layered terrains could be preserved if the ice component sublimed and layering within the dust was not destroyed by eolian activity. The melting of polar terrains under conditions of greater atmospheric pressure would produce outwash deposits analogous to those of earth. Abrupt changes in Martian climate may have been triggered by major tectonic events through changes induced in planetary obliquity. Periodic climate changes, which are suggested by layering in thy polar terrains, seem to be the result of more regular fluctuations in the orbital parameters.

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