Universität zu Köln

Ballhaus, Chris, Fonseca, Raul O. C. ORCID: 0000-0002-0897-4884, Muenker, Carsten, Rohrbach, Arno, Nagel, Thorsten, Speelmanns, Iris M., Helmy, Hassan M., Zirner, Aurelia, Vogel, Antje K. and Heuser, Alexander ORCID: 0000-0003-3772-5534 (2017). The great sulfur depletion of Earth's mantle is not a signature of mantle-core equilibration. Contrib. Mineral. Petrol., 172 (8). NEW YORK: SPRINGER. ISSN 1432-0967

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Abstract

The extreme depletion of the Earth's mantle in sulfur is commonly seen as a signature of metal segregation from Earth's mantle to Earth's core. However, in addition to S, the mantle contains other elements as volatile as S that are hardly depleted relative to the lithophile volatility trend although they are potentially as siderophile as sulfur. We report experiments in metal-sulfide-silicate systems to show that the CI normalized abundances of S, Pb, and Sn in Earth's mantle cannot be reproduced by element partitioning in Fe +/- S-silicate systems, neither at low nor at high pressure. Much of the volatile inventory of the Earth's mantle must have been added late in the accretion history, when metal melt segregation to the core had become largely inactive. The great depletion in S is attributed to the selective segregation of a late sulfide matte from an oxidized and largely crystalline mantle. Apparently, the volatile abundances of Earth's mantle are not in redox equilibrium with Earth's core.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ballhaus, Chris UNSPECIFIED UNSPECIFIED UNSPECIFIED Fonseca, Raul O. C. UNSPECIFIED orcid.org/0000-0002-0897-4884 UNSPECIFIED Muenker, Carsten UNSPECIFIED UNSPECIFIED UNSPECIFIED Rohrbach, Arno UNSPECIFIED UNSPECIFIED UNSPECIFIED Nagel, Thorsten UNSPECIFIED UNSPECIFIED UNSPECIFIED Speelmanns, Iris M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Helmy, Hassan M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zirner, Aurelia UNSPECIFIED UNSPECIFIED UNSPECIFIED Vogel, Antje K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heuser, Alexander UNSPECIFIED orcid.org/0000-0003-3772-5534 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-222804
DOI:	10.1007/s00410-017-1388-3
Journal or Publication Title:	Contrib. Mineral. Petrol.
Volume:	172
Number:	8
Date:	2017
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1432-0967
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language TERRESTRIAL PLANETS; ACCRETION HISTORY; MAGMATIC SYSTEMS; TRACE-ELEMENTS; SILICATE MELTS; HIGH-PRESSURE; METAL; CONSTRAINTS; TEMPERATURE; SN Multiple languages Geochemistry & Geophysics; Mineralogy Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/22280