Other
Scientific paper
Nov 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...68..187c&link_type=abstract
Icarus (ISSN 0019-1035), vol. 68, Nov. 1986, p. 187-216.
Other
150
Mars Surface, Planetary Composition, Water, Climate, Impact, Mars Atmosphere, Outgassing, Plains, Planetary Craters, Planetary Geology, Regolith, Mars, Water, Abundance, Volatiles, Outgassing, Highlands, Depth, Ice, Porosity, Latitude, Surface, History, Regolith, Eruptions, Volume, Channels, Polar Regions, Carbonates, Position (Location), Volcanics, Bombardment, Impact Effects, Photographs, Features, Plains, Geology, Geochemistry, Evolution
Scientific paper
An evaluation is made of the role of water and other volatiles in the evolution of the Martian surface. The water, of which at least 0.5 km and perhaps as much as 1 km has outgassed, is primarily in the deep megaregolith that developed during the heavy bombardment that occurred early in the planet's history; since the end of this bombardment, the cratered lowlands lying at low latitudes have lost most of the water that was present at shallow depths by seepage, to form the valley networks. In the same period, the deep megaregolith lying below 1 km has locally lost large amounts of water during outflow channel formation. The originally volatile-rich cratered upland has been partly overplated by water-poor volcanics; extensive interactions have occurred between the volcanics and the volatile-rich basement.
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