Cited by 144Astro and Planetary SciencePlanetary Science and ExplorationOrigins and Evolution of Life

Cataclysm No More: New Views on the Timing and Delivery of Lunar Impactors

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Zellner, Nicolle E. B.·2017·Origins of Life and Evolution of Biospheres

Abstract

If properly interpreted, the impact record of the Moon, Earth's nearest neighbour, can be used to gain insights into how the Earth has been influenced by impacting events since its formation ~4.5 billion years (Ga) ago. However, the nature and timing of the lunar impactors - and indeed the lunar impact record itself - are not well understood. Of particular interest are the ages of lunar impact basins and what they tell us about the proposed "lunar cataclysm" and/or the late heavy bombardment (LHB), and how this impact episode may have affected early life on Earth or other planets. Investigations of the lunar impactor population over time have been undertaken and include analyses of orbital data and images; lunar, terrestrial, and other planetary sample data; and dynamical modelling. Here, the existing information regarding the nature of the lunar impact record is reviewed and new interpretations are presented. Importantly, it is demonstrated that most evidence supports a prolonged lunar (and thus, terrestrial) bombardment from ~4.2 to 3.4 Ga and not a cataclysmic spike at ~3.9 Ga. Implications for the conditions required for the origin of life are addressed.

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Research works printed but not linked: 7

  1. Baldwin RB The face of the moon 1949 Chicago Univ. of Chicago Press
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Authors
Zellner, N. E. B.
Affiliations
Albion College (US)
Corresponding author
Zellner, Nicolle E. B.
Venue
Origins of Life and Evolution of Biospheres
Published
2017-05-03
Volume
47
Issue
3
Pages
261-280
ISSN
  • 0169-6149 (ISSN-L)
  • 1573-0875
OpenAlex
W2609827387
Cited by
144
References
166
Citations by year
2026: 8 · 2025: 12 · 2024: 15 · 2023: 30 · 2022: 16 · 2021: 12 · 2020: 20 · 2019: 18 · 2018: 9 · 2017: 2
FWCI
7.18
Type
journal article
Language
en
Open access
Locations
  • Origins of Life and Evolution of Biospheres (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
  • National Aeronautics and Space Administration (NNX11AB28G, NNX15AL41G)
  • National Science Foundation (1008819, 1516884)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
Keywords
lunar basins, lunar cataclysm, Late Heavy Bombardment, impact timing, impact delivery, origin of life
MeSH terms
Origin of Life, Moon, Earth, Planet, Meteoroids, Evolution, Planetary

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