Contribution of Volcanic Outgassing to the Martian Polar Layered Deposits

Details Contribution of Volcanic Outgassing to the Martian Polar Layered Deposits Contribution of Volcanic Outgassing to the Martian Polar Layered Deposits

Aug 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000mpse.conf...24c&link_type=abstract

International Conference on Mars Polar Science and Exploration, p. 24

Astronomy and Astrophysics

Astronomy

Mars (Planet), Mars Atmosphere, Mars Surface, Mars Volcanoes, Planetary Geology, Deposits, Outgassing, Adsorption, Polar Regions

Scientific paper

While it is generally believed that the polar layered deposits are the result of astronomical variations causing adsorbed volatiles to be cyclically released from the regolith, an important component may be volatiles released from volcanic outgassing. Mars Orbiter Camera (MOC) images reveal that martian volcanism continued nearly up to the present day, which coincides with the young age of the polar layered deposits. Depending on the magnitude and duration of eruption episodes, the amount of volatiles released into the martian atmosphere from volcanic outgassing may have been significant. To date, however, the contribution this process has made to the total volatile inventory on Mars as well as the amount that may have been sequestered in the polar caps has not been fully explored. Our estimates suggest that the amount of volatiles released from volcanic outgassing through time is easily accounted for in the martian polar layered deposits, undermining the need for an astronomical mechanism. Additional information is contained in original extended abstract.

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