Davemaoite is present throughout the Earth's lower mantle

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Wang, Lin ; Katsura, Tomoo:
Davemaoite is present throughout the Earth's lower mantle.
In: Nature Geoscience. Bd. 18 (2025) . - S. 283-284.
ISSN 1752-0908
DOI: https://doi.org/10.1038/s41561-025-01658-8

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Abstract

High-pressure experiments reveal that calcium solubility in bridgmanite is insufficient to fully remove davemaoite from the Earth’s lower mantle. We propose that davemaoite-enriched domains form at the core–mantle boundary, serving as reservoirs for incompatible elements and offering a potential explanation for large low shear-wave velocity provinces.