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Sm-Nd isotope and trace element evidence for heterogeneous igneous protoliths of Variscan mafic blueschists in the East Krkonoše Complex (West Sudetes, NE Bohemian Massif, Czech Republic)
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SYSNO ASEP 0031857 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Sm-Nd isotope and trace element evidence for heterogeneous igneous protoliths of Variscan mafic blueschists in the East Krkonoše Complex (West Sudetes, NE Bohemian Massif, Czech Republic) Title Složení Sm-Nd izotopů a stopových prvků jako doklad heterogenní povahy protolitu mafických modrých břidlic východokrkonošského komplexu (Západní Sudety, SV Českého Masívu, Česká republika) Author(s) Patočka, František (GLU-S) SAI
Pin, CH. (FR)Source Title Geodinamica Acta - ISSN 0985-3111
Roč. 18, č. 5 (2005), s. 363-374Number of pages 12 s. Language eng - English Country FR - France Keywords Blueschists ; Bohemian Massif ; Early Palaeozoic ; Nd isotopes ; Northern Gondwana ; trace elements Subject RIV DB - Geology ; Mineralogy R&D Projects IAA3111102 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z3013912 - GLU-S UT WOS 000234431500002 EID SCOPUS 29644445923 Annotation Mafic blueschists of the East Krkonoše Complex (EKC, Krkonoše-Jizera Block, central West Sudetes) are glaucophane-bearing metabasites partly overprinted to greenschist facies assemblages. Major and trace element concentrations and Sm-Nd radiogenic isotopes were studied with the aim to evaluate the chemical affinities of their igneous protoliths of Early Ordovician age (485 ± 4 Ma, [1]), and draw inferences on their paleotectonic setting. The distribution of immobile incompatible trace elements patterns (e.g., Th /Nb from 0.07 to 0.1) and Nd isotope signatures (εNdi = +5.9 to +7.7) of most mafic samples correspond to those of modern basalts of MORB - and OIB-types, respectively, free of significant interactions with materials from the continental crust. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2006
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