Other
Scientific paper
May 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...38..230g&link_type=abstract
Icarus, vol. 38, May 1979, p. 230-242.
Other
24
Cratering, Meteorite Craters, Rates (Per Time), Cratons, Impact Damage, Lunar Craters, Planetary Evolution, Position (Location), Size Determination, Structures, Ages, Chronology, Earth, Craters, Terrestrial, Cratering, Slopes, Size Frequency Distribution, Hypervelocity, Meteoroid Impacts, Shock Metamorphism, Morphology, Deformation, Erosion, Moon, Composition
Scientific paper
The terrestrial crater production rate is estimated from a compilation of the locations and ages of proven and probable terrestrial impact craters and compared with that calculated from astronomical observations and for other planets. The estimated size-frequency distribution of craters greater than 20 km in diameter formed during the Phanerozoic, a -2 power law, is similar to the distributions of lunar and Martian craters. The North American and East European cratons are estimated to have cratering rates of craters greater than 20 km of 0.36 x 10 to the -14/sq km yr and 0.33 x 10 to the -14/sq km yr, respectively, in good agreement with previous estimates and observations of Apollo bodies. Comparisons with the lunar rate indicate that the lunar and terrestrial rates overlap if the cratering flux had been constant over the last 3.4 billion years, however if a constant rate was not reached until 3.0 to 2.5 billion years ago, the lunar rate would have been half that of the terrestrial rate.
Dence Michael R.
Grieve Richard A. F.
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