The age of the Venusian surface - Estimates using terrestrial crater data

Details The age of the Venusian surface - Estimates using terrestrial crater data The age of the Venusian surface - Estimates using terrestrial crater data

Jun 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987avest..21..144s&link_type=abstract

Astronomicheskii Vestnik (ISSN 0320-930X), vol. 21, Apr.-June 1987, p. 144-151. In Russian.

Astronomy and Astrophysics

Astronomy

8

Chronology, Craters, Earth Surface, Planetary Evolution, Venus Surface, Comet Nuclei, Northern Hemisphere

Scientific paper

The average crater-age of Venus's northern hemisphere may be less than 250 m.y. assuming equivalence between the recent terrestrial cratering rate and that on Venus for craters ≥20 km in diameter. However, given the uncertainties in the role of both active and inactive cometary nuclei in the cratering history of the Earth, the authors conclude that the age of the observed surface in the northern hemisphere of Venus could be as great as the 450 m.y. mean age of the Earth's crust. The observed surface of Venus might be even older, but no evidence from the crater observations supports an age as great as 1 b.y.

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