An Archaean heavy bombardment from a destabilized extension of the asteroid belt

@article{Bottke2012AnAH,
  title={An Archaean heavy bombardment from a destabilized extension of the asteroid belt},
  author={William Bottke and David Vokrouhlicky and David Minton and D Nesvorn{\'y} and Alessandro Morbidelli and Ramon Brasser and Bruce Simonson and Harold Levison},
  journal={Nature},
  year={2012},
  volume={485},
  pages={78-81}
}
The barrage of comets and asteroids that produced many young lunar basins (craters over 300 kilometres in diameter) has frequently been called the Late Heavy Bombardment (LHB). Many assume the LHB ended about 3.7 to 3.8 billion years (Gyr) ago with the formation of Orientale basin. Evidence for LHB-sized blasts on Earth, however, extend into the Archaean and early Proterozoic eons, in the form of impact spherule beds: globally distributed ejecta layers created by Chicxulub-sized or larger… CONTINUE READING
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