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Petrogenesis of alkali pyroxenite and ijolite xenoliths from the Tertiary Loučná–Oberwiesenthal Volcanic Centre, Bohemian Massif in the light of new mineralogical, geochemical and isotopic data
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SYSNO ASEP 0026641 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Petrogenesis of alkali pyroxenite and ijolite xenoliths from the Tertiary Loučná–Oberwiesenthal Volcanic Centre, Bohemian Massif in the light of new mineralogical, geochemical and isotopic data Title Petrogeneze xenolitů alkalických pyroxenitů a ijolitů z tercierního Loučná-Oberwiesenthalského vulkanického centra v Českém masivu ve světle nových mineralogických, geochemických a izotopických údajů Author(s) Ulrych, Jaromír (GLU-S) RID, SAI
Lloyd, F. E. (GB)
Balogh, K. (HU)
Hegner, E. (DE)
Langrová, Anna (GLU-S) RID, SAI
Lang, Miloš (GLU-S) RID, SAI
Novák, Jiří Karel (GLU-S) RID, SAI
Řanda, Zdeněk (UJF-V) RIDSource Title Neues Jahrbuch für Mineralogie. Abhandlungen - ISSN 0077-7757
Roč. 182, č. 1 (2005), s. 57-79Number of pages 23 s. Language eng - English Country DE - Germany Keywords xenolith ; alkali pyroxenite ; ijolite Subject RIV DB - Geology ; Mineralogy R&D Projects IAA3013403 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) IAA3048201 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z3013912 - GLU-S AV0Z1048901 - UJF-V UT WOS 000234133800007 EID SCOPUS 29144446153 DOI https://doi.org/10.1127/0077-7757/2005/0029 Annotation Alkali pyroxenite and ijolite xenoliths occur in ca. 37–30 Ma old nephelinite of the Loučná–Oberwiesenthal Volcanic Centre. The alkali pyroxenites and transitional xenoliths are abundant whereas ijolite xenoliths are rare. The host nephelinite is chemically evolved, and the entrained alkali clinopyroxenite xenoliths and transitional to ijolite xenoliths show a range of compositions from little to highly evolved. The alkali pyroxenite xenoliths probably represent fragments of an intracrustal, possibly layered alkaline complex, overprinted by a late-magmatic pegmatoid phase of ijolite composition. Nd values of +2.3 in clinopyroxene samples from the host nepheliniteInitial and +3.1 to +3.0 in clinopyroxene from the xenoliths indicate similar, yet Nd values for thedifferent sources. The initial 87Sr/86Sr ratios and inital alkali pyroxenite xenoliths are consistent with mantle sources of HIMU-affinity. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Tel.: 226 800 273 Year of Publishing 2006
Number of the records: 1