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The Sklené garnet peridotite: petrology, geochemistry, and structure of a mantle-derived boudin in Moldanubian granulite
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SYSNO ASEP 0337040 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve SCOPUS Title The Sklené garnet peridotite: petrology, geochemistry, and structure of a mantle-derived boudin in Moldanubian granulite Author(s) Medaris Jr., G. (US)
Ackerman, Lukáš (GLU-S) RID, SAI, ORCID
Jelínek, E. (CZ)
Toy, V. (NZ)
Siebel, W. (DE)
Tikoff, B. (US)Source Title Journal of Geosciences - ISSN 0449-2560
Roč. 54, č. 4 (2009), s. 301-323Number of pages 23 s. Publication form WWW - WWW Language eng - English Country JP - Japan Keywords peridotite ; LPO ; geochemistry ; radiogenic isotopes ; PT conditions ; Moldanubian Subject RIV DD - Geochemistry R&D Projects KJB300130902 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30130516 - GLU-S (2005-2011) EID SCOPUS 76349122759 DOI 10.3190/jgeosci.052 Annotation 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. 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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