Impact delivery and erosion of planetary oceans in the early inner solar system

Details Impact delivery and erosion of planetary oceans in the early inner solar system Impact delivery and erosion of planetary oceans in the early inner solar system

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990natur.343..129c&link_type=abstract

Nature (ISSN 0028-0836), vol. 343, Jan. 11, 1990, p. 129-133. Research supported by NASA.

Other

100

Impact Damage, Meteorite Craters, Planetary Evolution, Sea Water, Terrestrial Planets, Water Balance, Asteroids, Carbonaceous Meteorites, Comets, Erosion, Solar System, Planets, Ocean, Impacts, Erosion, Terrestrial Planets, Water, Volatiles, Comets, Asteroids, Carbonaceous Material, Bombardment, Moon, Hydrosphere, Origin, Source, Earth, Venus, Mars, Accretion, Comparisons, Models

Scientific paper

The terrestrial planets may have acquired oceans of water (and other surface volatiles) as a late-accreting veneer from impacts of comets and carbonaceous asteroids during the period of heavy bombardment 4.5 to 3.5 Gyr ago. On any given body, the efficiency of this mechanism depended on a competition between impact delivery of new volatiles and impact erosion of those already present. For the larger worlds of the inner Solar System, this competition strongly favored the net accumulation of planetary oceans.

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