GARNET FRACTIONATION IN A HYDROUS MAGMA OCEAN AND THE ORIGIN OF AL-DEPLETED KOMATIITES: MELTING EXPERIMENTS OF HYDROUS PYROLITE WITH REES AT HIGH PRESSURE

dc.contributor.author	Inoue T.
dc.contributor.author	Rapp R.P.
dc.contributor.author	Zhang J.
dc.contributor.author	Gasparik T.
dc.contributor.author	Weidner D.J.
dc.contributor.author	Irifune T.
dc.date.accessioned	2021-01-22T08:38:47Z
dc.date.available	2021-01-22T08:38:47Z
dc.date.issued	2000
dc.identifier	https://elibrary.ru/item.asp?id=235145
dc.identifier.citation	Earth and Planetary Science Letters, 2000, 177, 1, 81-87
dc.identifier.issn	0012-821X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/23533
dc.description.abstract	Melting experiments of a representative mantle composition doped with some key trace elements were conducted under hydrous conditions at pressures to 20 GPa. The results demonstrate that only ~5-25% of garnet fractionation and relatively low pressures (<8 gpa) and low temperatures (~1300-1500°C) are required to produce Al-depleted Barberton-type komatiites (>3.5 Ga) in the solidifying hydrous magma ocean. This suggests that the Archean mantle was much cooler than so far believed from the origin of the komatiites based on anhydrous experiments.
dc.subject	KOMATIITE
dc.subject	MELTING
dc.subject	ARCHEAN
dc.subject	RARE EARTHS
dc.subject	GARNET GROUP
dc.subject	FRACTIONAL CRYSTALLIZATION
dc.title	GARNET FRACTIONATION IN A HYDROUS MAGMA OCEAN AND THE ORIGIN OF AL-DEPLETED KOMATIITES: MELTING EXPERIMENTS OF HYDROUS PYROLITE WITH REES AT HIGH PRESSURE
dc.type	Статья
dc.subject.age	Precambrian::Archean	en
dc.subject.age	Докембрий::Архей	ru

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