Megaregolith evolution and cratering cataclysm models—Lunar cataclysm as a misconception (28 years later)

  title={Megaregolith evolution and cratering cataclysm models—Lunar cataclysm as a misconception (28 years later)},
  author={William K. Hartmann},
  journal={Meteoritics \& Planetary Science},
  • W. Hartmann
  • Published 1 April 2003
  • Geology, Physics
  • Meteoritics & Planetary Science
Abstract— The hypothesis of a lunar cataclysmic cratering episode between 3.8 and 3.9 Gyr ago lacks proof. Its strongest form proposes no cratering before about 4.0 Gyr, followed by catastrophic formation of most lunar craters and basins in >200 Myr. The premise that “zero impact melts implies zero impacts” is disproved by data from asteroids, on which early collisions clearly occurred, but from which early impact melts are scarce. Plausible cataclysm models imply that any cataclysm should have… 

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