High-pressure elastic properties of dolomite melt supporting carbonate-induced melting in deep upper mantle.
VP/VS ratio
carbonate melt
equation of state
sound velocity
upper mantle
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
04 Aug 2020
04 Aug 2020
Historique:
pubmed:
22
7
2020
medline:
22
7
2020
entrez:
22
7
2020
Statut:
ppublish
Résumé
Deeply subducted carbonates likely cause low-degree melting of the upper mantle and thus play an important role in the deep carbon cycle. However, direct seismic detection of carbonate-induced partial melts in the Earth's interior is hindered by our poor knowledge on the elastic properties of carbonate melts. Here we report the first experimentally determined sound velocity and density data on dolomite melt up to 5.9 GPa and 2046 K by in-situ ultrasonic and sink-float techniques, respectively, as well as first-principles molecular dynamics simulations of dolomite melt up to 16 GPa and 3000 K. Using our new elasticity data, the calculated V
Identifiants
pubmed: 32690695
pii: 2004347117
doi: 10.1073/pnas.2004347117
pmc: PMC7414062
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
18285-18291Informations de copyright
Copyright © 2020 the Author(s). Published by PNAS.
Déclaration de conflit d'intérêts
The authors declare no competing interest.
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