Počet záznamů: 1
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 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název 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 Tvůrce(i) Ackerman, Lukáš (GLU-S) RID, SAI, ORCID
Walker, R. J. (US)
Puchtel, I. S. (US)
Pitcher, L. (US)
Jelínek, E. (CZ)
Strnad, L. (CZ)Zdroj.dok. Geochimica et Cosmochimica Acta. - : Elsevier - ISSN 0016-7037
Roč. 73, č. 8 (2009), s. 2400-2414Poč.str. 15 s. Forma vydání WWW - WWW Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova peridotite ; dunite-wehrlite ; melt-rock reaction Vědní obor RIV DD - Geochemie CEP IAA3013403 GA AV ČR - Akademie věd KJB300130612 GA AV ČR - Akademie věd CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000264790800012 EID SCOPUS 62349117046 DOI 10.1016/j.gca.2009.02.002 Anotace 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. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2010
Počet záznamů: 1