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Effects of melt percolation on highly siderophile elements and Os isotopes in subcontinental lithospheric mantle: A study of the upper mantle profile beneath Central Europe
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SYSNO ASEP 0322709 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effects of melt percolation on highly siderophile elements and Os isotopes in subcontinental lithospheric mantle: A study of the upper mantle profile beneath Central Europe Author(s) Ackerman, Lukáš (GLU-S) RID, SAI, ORCID
Walker, R. J. (US)
Puchtel, I. S. (US)
Pitcher, L. (US)
Jelínek, E. (CZ)
Strnad, L. (CZ)Source Title Geochimica et Cosmochimica Acta. - : Elsevier - ISSN 0016-7037
Roč. 73, č. 8 (2009), s. 2400-2414Number of pages 15 s. Publication form WWW - WWW Language eng - English Country GB - United Kingdom Keywords peridotite ; dunite-wehrlite ; melt-rock reaction Subject RIV DD - Geochemistry R&D Projects IAA3013403 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) KJB300130612 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000264790800012 EID SCOPUS 62349117046 DOI 10.1016/j.gca.2009.02.002 Annotation This study is focused on effects of mantle percolation on HSE distribution and Re-Os isotopic systematics of upper mantle rocks brought to the surface during 5 Ma years old eruption of Kozákov volcano (Northern Bohemia). The Os-Ir-Ru-Pd distribution in these rocks shows significant depletions which are the result of the melt-rock interactions. In contrast, Pt contents are commonly elevated and these enrichments are coupled with increasing melt/rock ratios. Osmium isotopic ratios are lower then chondrite meteorites and their strongly heterogeneous values reflect also melt-rock reactions. All these results imply almost sulphide-breakdown in the lower sections of the mantle profile. On contrary, the middle and upper parts of the profile show only limited HSE removal. Moreover, HSE were most likely even precipitated from percolating melt in some cases. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2010
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