Timing of Variscan HP-HT metamorphism in the Moldanubian Zone of the Bohemian Massif: U-Pb SHRIMP dating on multiply zoned zircons from a granulite from the Dunkelsteiner Wald Massif, Lower Austria

Friedl, Gertrude; Cooke, Rob A.; Finger, Friedrich; McNaughton, Neal J.; Fletcher, Ian R.

doi:10.1007/s00710-011-0162-x

Cited by 34 publications

(23 citation statements)

References 51 publications

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“…By contrast, Roberts & Finger () interpreted the 340 Ma age as growth of zircon from partial melt during exhumation. Younger ages of 335 Ma obtained from thin U‐rich rims of zircon are interpreted as resulting from late partial melt crystallization (Friedl et al ., ). These data suggest that the granulites were at mid‐crustal depth by 335 Ma.…”

Section: Geological Settingmentioning

confidence: 97%

“…340 Ma, but spread of ages goes from Cambrian to Carboniferous ( c . 500 – 335 Ma) (van Breemen et al ., ; Prince et al ., ; Schulmann et al ., ; Sláma et al ., , ; Friedl et al ., ; Nahodilová et al ., ).…”

Section: Geological Settingmentioning

confidence: 99%

“…Geochronology of zircon from the Bohemian felsic, intermediate and mafic granulites has involved various methods, ranging from multigrain dating, ICP-MS, SHRIMP, SIMS and TIMS methods. The data show an emblematic peak at c. 340 Ma, but spread of ages goes from Cambrian to Carboniferous (c. 500-335 Ma) (van Breemen et al, 1982;Prince et al, 2000;Schulmann et al, 2005;Sl ama et al, 2007Sl ama et al, , 2008Friedl et al, 2011;Nahodilov a et al, 2014).…”

Section: Previous Zircon Geochronologymentioning

confidence: 99%

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Uncoupled U/Pb and REE response in zircon during the transformation of eclogite to mafic and intermediate granulite (Blanský les, Bohemian Massif)

Štípská

Powell

Hacker

et al. 2016

Journal Metamorphic Geology

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Section: Geological Settingmentioning

confidence: 97%

Section: Geological Settingmentioning

confidence: 99%

Section: Previous Zircon Geochronologymentioning

confidence: 99%

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Uncoupled U/Pb and REE response in zircon during the transformation of eclogite to mafic and intermediate granulite (Blanský les, Bohemian Massif)

Štípská

Powell

Hacker

et al. 2016

Journal Metamorphic Geology

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“…The granulite-facies metamorphism occurred at about 340 Ma (e.g. Friedl et al 2011), followed by rapid exhumation to mid-crustal levels (c. 338-335 Ma) and subsequent nearly isobaric cooling through ~300 °C between c. 320-310 Ma (e.g. Matte et al 1985).…”

Section: Introductionmentioning

confidence: 99%

Intrusive and deformation history of the Ševětín Pluton, Moldanubian Batholith: record of polyphase tectonic evolution of the Blanice Graben, Bohemian Massif

Zachariáš

Trubač²

2014

J. Geosci.

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The Ševětín Pluton, located c. 15 km NNE of České Budějovice, is a small, isolated, petrologically and structurally complex intrusive body that is genetically related to the youngest intrusions of the Moldanubian Batholith. As documented in this study, its overall shape, internal magmatic fabric as well as brittle structures (dikes, veins, joints, faults) are, however, related to the formation and polyphase tectonic evolution of the Blanice Graben, an about 200 km long and 5-15 km wide NNE-SSW-trending, deep-seated fault zone that cuts across the Moldanubian Unit. In total, one pre-intrusive and three syn-to post-intrusive tectonic phases have been distinguished. The oblique, NW-SE oriented compression controlled both the intrusion of the Ševětín biotite-muscovite granite and the early stage of its brittle deformation. Sigmoidal pattern of magnetic foliations in this pluton documents its mostly solid-state deformation during oblique sinistral movements on the main faults of the Blanice Graben. The subsequent strike-slip phase was characterized by E-W oriented subhorizontal extension and can be correlated with the intrusion of c. 270 Ma old microgranodiorite dikes. The last extensional phase was associated with the formation of subeconomic Pb-Zn-(Ag?) quartz-calcite veins at c. 265 Ma.

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“…They record the granulite-to eclogite-facies Tábor Rudolfov P r a g u e P r a g u e conditions at about 340 Ma (e.g. Faryad et al 2010;Friedl et al 2011). The Moldanubian Unit was intruded by two large Variscan plutonic complexes: the Central Bohemian Plutonic Complex (CBPC; e.g.…”

Section: Regional Geologymentioning

confidence: 99%

Structural evolution of the Roudný gold deposit, Bohemian Massif: a combination of paleostress analysis and review of historical documents

Zachariáš

Hubst²

2012

J. Geosci.

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The Roudný gold deposit, hosted by a large-scale NNE-SSW trending fault zone (the Blanice Graben), represents a type locality of low-fineness gold (Au-Ag) mineralization in the Bohemian Massif. In order to decipher its structural evolution, we performed a detailed analysis of brittle to brittle-ductile structures on outcrops and of structures described in unpublished historical materials. Three stress phases were distinguished: compressional, strike-slip, and extensional. Most hydrothermal veins originated during the strike-slip and extensional phases. Based on a comparison with the nearby Ratibořské Hory-Stará Vožice deposit, a representative of Ag-Pb-Zn vein type mineralization in the Blanice Graben, we conclude that the structural pattern of both ore deposits/mineralizations (Ag-Pb-Zn and Au-Ag) is compatible with the overall sinistral strike-slip evolution of the Blanice . Whereas most of the Ag-Pb-Zn veins represent typical extension veins/fractures, early gold-bearing quartz veins of the Roudný deposit were probably initiated as Riedel R' shears and were later reopened during the extensional phase.

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Timing of Variscan HP-HT metamorphism in the Moldanubian Zone of the Bohemian Massif: U-Pb SHRIMP dating on multiply zoned zircons from a granulite from the Dunkelsteiner Wald Massif, Lower Austria

Cited by 34 publications

References 51 publications

Uncoupled U/Pb and REE response in zircon during the transformation of eclogite to mafic and intermediate granulite (Blanský les, Bohemian Massif)

Uncoupled U/Pb and REE response in zircon during the transformation of eclogite to mafic and intermediate granulite (Blanský les, Bohemian Massif)

Intrusive and deformation history of the Ševětín Pluton, Moldanubian Batholith: record of polyphase tectonic evolution of the Blanice Graben, Bohemian Massif

Structural evolution of the Roudný gold deposit, Bohemian Massif: a combination of paleostress analysis and review of historical documents

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