Počet záznamů: 1
The Sklené garnet peridotite: petrology, geochemistry, and structure of a mantle-derived boudin in Moldanubian granulite
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SYSNO ASEP 0337040 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve SCOPUS Název The Sklené garnet peridotite: petrology, geochemistry, and structure of a mantle-derived boudin in Moldanubian granulite Tvůrce(i) Medaris Jr., G. (US)
Ackerman, Lukáš (GLU-S) RID, SAI, ORCID
Jelínek, E. (CZ)
Toy, V. (NZ)
Siebel, W. (DE)
Tikoff, B. (US)Zdroj.dok. Journal of Geosciences - ISSN 0449-2560
Roč. 54, č. 4 (2009), s. 301-323Poč.str. 23 s. Forma vydání WWW - WWW Jazyk dok. eng - angličtina Země vyd. JP - Japonsko Klíč. slova peridotite ; LPO ; geochemistry ; radiogenic isotopes ; PT conditions ; Moldanubian Vědní obor RIV DD - Geochemie CEP KJB300130902 GA AV ČR - Akademie věd CEZ AV0Z30130516 - GLU-S (2005-2011) EID SCOPUS 76349122759 DOI 10.3190/jgeosci.052 Anotace The Moldanubian Sklené garnet peridotite, which preserves mineralogical, geochemical, and structural evidence for a protracted mantle evolution, is a small boudin (1 m) enclosed by granulite of the Gföhl Assemblage. The peridotite has a porphyroclastic texture, in which large garnet and smaller olivine and pyroxene porphyroclasts reside in a fine-grained, recrystallized matrix of olivine, pyroxene, and pargasitic amphibole). By comparison with other Moldanubian garnet peridotites in the Czech Republic, the Sklené peridotite likely represents a fragment of subcontinental lithospheric mantle. It experienced early partial fusion and depletion of incompatible elements at moderate pressure in the spinel stability field, followed by transport to high-pressure conditions. Subsequently, the depleted peridotite was metasomatized by transient, primitive basaltic melts, with the addition of Rb, Th, U, Pb, and Sr. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2010
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