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Home » Note, Paper: Geo Wet Cosmo Chondrica

Note, Paper: Geo Wet Cosmo Chondrica

There’s one paper I’ll point out in Geochimica et Cosmochimica Acta for 1 Mar, vol. 392 (and none for 15 Mar, vol. 393):

Bermingham, K. R. Tornabene, H. A. Walker, R. J. et al.  The non-carbonaceous nature of Earth’s late-stage accretion  p. 38  .2024.11.005

The history of the Earth is a story with pages missing. We know the bulk Earth accreted from enstatite meteorites; these meteorites existed in the inner Solar System, and have matching isotopes compared to Earth rocks. But the enstatites are too dry; they cannot explain Earth’s oceans, let alone our mantle water (at least equal to, likely greater than the oceans). Carbonaceous chondrite meteorites are several percent water; some amount of carbonaceous chondrites landing on the bulk Earth can account for the oceans- easily. Did they? Bermingham et al. are not so sure, and alternate explanations claim to provide our oceans. Did they?

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