PRIMARY DIFFERENCES IN OXYGEN FUGACITY AND DEPTH OF MELTING IN THE MANTLE SOURCE REGIONS FOR OCEANIC BASALTS

dc.contributor.author	Dmitriev L.V.
dc.contributor.author	Sobolev A.V.
dc.contributor.author	Uchanov A.V.
dc.contributor.author	Malysheva T.V.
dc.contributor.author	Melson W.G.
dc.date.accessioned	2020-02-14T00:23:35Z
dc.date.available	2020-02-14T00:23:35Z
dc.date.issued	1984
dc.identifier	https://elibrary.ru/item.asp?id=30964380
dc.identifier.citation	EARTH AND PLANETARY SCIENCE LETTERS, 1984, 70, 2, 303-310
dc.identifier.issn	0012-821X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/15757
dc.description.abstract	Most abyssal basalt can be divided into two groups based on major and minor element compositions of the glassy rinds of pillow lavas. Crystal differentiation models cannot relate one group to the other. Instead, depth of partial melting may exert the primary control. The first group (MORB-1) is characterized by low TiO2 and Na2O and higher MgO, and is derived from a primary melt originating from the spinel peridotite facies. The higher TiO2-NaO2 group (MORB-2) appears to have been derived from the lower-pressure (shallower depth) plagioclase peridotite facies. Mössbauer spectra show that MORB-1 is from a mantle source region with lower oxidation states (between the QFM and NNO buffers) than for MORB-2 (around the NNO buffer).
dc.title	PRIMARY DIFFERENCES IN OXYGEN FUGACITY AND DEPTH OF MELTING IN THE MANTLE SOURCE REGIONS FOR OCEANIC BASALTS
dc.type	Статья

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