Tracking the origin of ultralow velocity zones at the base of Earth's mantle

Origins of the ultralow velocity zones may be classified by their velocity-reduction-ratio, R = δ lnVS/δ lnVP, which ranges from 1.2–1.5 for iron oxides or iron-enriched magnesium oxides, 1.6–2.0 for pyrite-type FeO(2)H(x), 2.3–2.8 for the eutectic melt of Fe + C, 2.7–3.1 for partial melt of (Mg, Fe...

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Detalles Bibliográficos
Autor principal: Chen, Jiuhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2021
Materias:
EARTH SCIENCES
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8288332/
https://www.ncbi.nlm.nih.gov/pubmed/34691621
http://dx.doi.org/10.1093/nsr/nwaa308
Descripción
Sumario:Origins of the ultralow velocity zones may be classified by their velocity-reduction-ratio, R = δ lnVS/δ lnVP, which ranges from 1.2–1.5 for iron oxides or iron-enriched magnesium oxides, 1.6–2.0 for pyrite-type FeO(2)H(x), 2.3–2.8 for the eutectic melt of Fe + C, 2.7–3.1 for partial melt of (Mg, Fe)SiO(3) + Fe to 3.5–4.5 for iron-rich post-perovskite.

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