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| Peron, Sandrine; Moreira, Manuel; Agranier, Arnaud. |
| We review the different scenarios for the origin of light noble gases (He, Ne, and Ar) on Earth. Several sources could have contributed to the Earth's noble gas budget: implanted solar wind, solar nebula gas, chondrites, and comets. Although there is evidence for solar-like neon in the Earth's mantle, questions remain as to its origin. A new compilation of noble gas data in lunar soils, interplanetary dust particles, micrometeorites, and solar wind allows examination of the implanted solar wind composition, which is key to understanding the solar-like mantle neon isotope composition. We show that lunar soils that reflect this solar-wind-implanted signature have a Ne-20/Ne-22 ratio very close to that of ocean island basalts. New data and calculations... |
| Tipo: Text |
Palavras-chave: Volatile origin; Helium; Neon; Argon; Solar wind implantation. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00638/74992/75837.pdf |
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