Possible cometary origin of heavy noble gases in the atmospheres of Venus, Earth and Mars

@article{Owen1992PossibleCO,
  title={Possible cometary origin of heavy noble gases in the atmospheres of Venus, Earth and Mars},
  author={Tobias C. Owen and Akiva Bar-Nun and Idit Kleinfeld},
  journal={Nature},
  year={1992},
  volume={358},
  pages={43-46}
}
MODELS that trace the origin of noble gases in the atmospheres of the terrestrial planets (Venus, Earth and Mars) to the 'planetary component' in chondritic meteorites confront several problems. The 'missing' xenon in the atmospheres of Mars and Earth (Fig. 1) is one of the most obvious; this gas is not hidden or trapped in surface materials1. On Venus, the absolute abundances of neon and argon per gram of rock are higher even than those in carbonaceous chondrites, whereas the relative… 

Noble gas signature of the Late Heavy Bombardment in the Earth's atmosphere

The Lunar cratering record is consistent with the occurrence of a late heavy bombardment (LHB), which marked the end of terrestrial planet accretion 3.8 billion years ago. However, clear evidence of

IMPACT REGIMES AND POST-FORMATION SEQUESTRATION PROCESSES: IMPLICATIONS FOR THE ORIGIN OF HEAVY NOBLE GASES IN TERRESTRIAL PLANETS

The difference between the measured atmospheric abundances of neon, argon, krypton, and xenon for Venus, Earth, and Mars is striking. Because these abundances drop by at least 2 orders of magnitude

Contributions of Icy Planetesimals to the Earth's Early Atmosphere

  • T. OwenA. Bar-Nun
  • Physics, Geology
    Origins of life and evolution of the biosphere
  • 2004
TLDR
If the sample of three comets analyzed so far is typical, the Earth's oceans cannot have been produced by comets alone, they require an additionalsource of water with low D/H, and the highly fractionated neon inthe Earth's atmosphere may indicate the importance of non-icy carriers of volatiles.

Mars cryosphere: A potential reservoir for heavy noble gases?

Noble Gases in Martian Meteorites

Models for Distribution of Terrestrial Noble Gases and Evolution of the Atmosphere

Noble gases provide unique clues to the structure of the Earth and the degassing of volatiles into the atmosphere. Since the noble gases are highly depleted in the Earth, their isotopic compositions
...

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