MOBILITY OF CORE MELTS DURING EARTHS ACCRETION

dc.contributor.author	Ballhaus C.
dc.contributor.author	Ellis D.J.
dc.date.accessioned	2020-11-21T07:53:51Z
dc.date.available	2020-11-21T07:53:51Z
dc.date.issued	1996
dc.identifier	https://elibrary.ru/item.asp?id=488716
dc.identifier.citation	Earth and Planetary Science Letters, 1996, , 1, 137-145
dc.identifier.issn	0012-821X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/19202
dc.description.abstract	We have equilibrated carbon-saturated Fe-Ni-Co-S melts in a San-Carlos olivine matrix between 1350 and 1570°C at 2 GPa, to measure the median dihedral angles of metallic core melts in a silicate mantle matrix as a function of temperature and sulfur fugacity. The angles increase from about 68° for the most oxidized monosulfide liquid solutions (metal-sulfur ratio # 0.97), to # 115° for the most reduced metal-rich melts (M/S # 100). Temperature effects are small. These angles preclude that metallic core melts could have segregated efficiently from a crystalline silicate mantle by grain boundary percolation. We suggest that core formation must have occurred from a magma ocean.
dc.subject	MELTS
dc.subject	MAGMA OCEANS
dc.subject	CORE
dc.subject	IMMISCIBILITY
dc.title	MOBILITY OF CORE MELTS DURING EARTHS ACCRETION
dc.type	Статья

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