A unified model for hydrogen in the Earth and Moon: No one expects the Theia contribution
A unified model for hydrogen in the Earth and Moon: No one expects the Theia contribution
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Date
2019-10-22
Authors
Desch, Steven J.
Robinson, Katharine L.
https://orcid.org/0000-0003-4750-724X
Journal Title
Journal ISSN
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Publisher
Elsevier
Abstract
The Moon is thought to have formed after a planetary embryo, known as Theia, collided with the proto-Earth 4.5 billion years ago. This so-called Giant Impact was the last major event during Earth's accretion, and its effects on the composition of the Earth and the newly forming Moon would be measureable today. Recent work on lunar samples has revealed that the Moon's water was not lost as a result of this giant impact. Instead, the Moon appears to contain multiple hydrogen reservoirs with diverse deuterium-to-hydrogen (D/H) ratios. For the first time, we incorporate hydrogen isotopic measurements of lunar samples to help constrain the composition of Theia.
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Keywords
Moon--Origin,
Planets--Origin,
Enstatite,
Chondrites (Meteorites)
Citation
Desch S.J., and Robinson K.L. 2019. "A unified model for hydrogen in the Earth and Moon: No one expects the Theia contribution". Chemie Der Erde. 79 (4)