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Geochemistry of the Drahotín and Mutěnín intrusions, West Bohemian shear zone, Bohemian massif: contrasting evolution of mantle-derived melts
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SYSNO ASEP 0356767 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Geochemistry of the Drahotín and Mutěnín intrusions, West Bohemian shear zone, Bohemian massif: contrasting evolution of mantle-derived melts Author(s) Ackerman, Lukáš (GLU-S) RID, SAI, ORCID
Krňanská, M. (CZ)
Siebel, W. (DE)
Strnad, L. (CZ)Source Title Mineralogy and Petrology. - : Springer - ISSN 0930-0708
Roč. 99, 3/4 (2010), s. 185-199Number of pages 15 s. Publication form WWW - WWW Language eng - English Country AT - Austria Keywords Teplá-Barrandian ; fractional crystallization ; assimilation ; gabbro Subject RIV DD - Geochemistry R&D Projects KJB300130612 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30130516 - GLU-S (2005-2011) UT WOS 000280073300003 EID SCOPUS 77954660972 DOI 10.1007/s00710-010-0114-x Annotation In western Bohemia, the Drahotín and Mutěnín intrusions show different origins and evolutions. Parental magmas of the Drahotín intrusion were derived predominantly from enriched mantle sources, and the melts have undergone a significant degree of assimilation-fractional crystallization during their ascent and/or emplacement into the Earth`s crust. In contrast, the compositional variation of the complex Mutěnín intrusion cannot be explained by similar processes as in the case of Drahotín intrusion, but more likely reflects the involvement of several parental magmas. The gabbronorite was derived from a depleted mantle source, whereas the diorite/syenite stem from a mixed mantle-crust reservoir. The contrasting evolution of the Drahotín and Mutěnín intrusions may be due to their melt derivation and magma emplacement under different tectonothermal regimes at different times during Variscan orogenesis. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2011
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