Melting Temperature and Partial Melt Chemistry of H 2 O-Saturated Mantle Peridotite to 11 Gigapascals

• DOI: 10.1126/science.276.5310.240
• Publication Date: 2002-07-27T09:39:52Z
• Authors: Tatsuhiko Kawamoto; John R. Holloway
• Keywords: Peridotite; Solidus

The H 2 O-saturated solidus of a model mantle composition (Kilborne Hole peridotite nodule, KLB-1) was determined to be just above 1000°C from 5 11 gigapascals. Given reasonable O abundances in Earth’s mantle, an O-rich fluid could exist only region defined by the wet and thermal stability limits hydrous minerals, at depths between 90 330 kilometers. experimental partial melts monotonously became more mafic with increasing pressure andesitic 1 gigapascal than starting 10 Because chemistry is similar that kimberlites, it suggested kimberlites may derived low-temperature melting 150 300