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The Stability of Carbonate Melts In the Mantle
Author(s) -
HierMajumder Saswata,
Sun Yizhuo,
Xu Yigang,
Walter Michael
Publication year - 2019
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.14017
Subject(s) - mantle (geology) , library science , geochemistry , history , geology , computer science
Seismic observations indicate the presence of a patchy Low-Velocity Layer (LVL) above subducting slabs stalled in the mantle transition zone. The LVL contains between 0.5 and 1 vol. % melt likely derived from melting of sab carbonates. While phase equilibrium studies are consistent with carbonate melting at this depth, these studies also suggest that the highly reducing condition of the mantle should render the melt unstable, leading to the precipitation of graphite, diamond, or metal carbides.