Reports

Mars: An Estimate of the Age of Its Surface

Science  24 Sep 1965:
Vol. 149, Issue 3691, pp. 1498-1499
DOI: 10.1126/science.149.3691.1498

Abstract

Intercomparisons of crater counts on Mars and the Moon suggest that the age of the visible Martian surface is approximately 340 to 680 million years.

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