About: Clasts of Variscan high-grade rocks within Upper Visean conglomerates - a missing link in the late Variscan evolution of Central Europe: constraints from U-Pb chronology

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About: Clasts of Variscan high-grade rocks within Upper Visean conglomerates - a missing link in the late Variscan evolution of Central Europe: constraints from U-Pb chronology Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In this paper, U-Pb zircon, monazite and rutile data for crystalline rocks deposited as clasts in the Upper Visean conglomerates at the eastern margin of the Bohemian Massif are reported. U-Pb data of spherical zircon from three different granulite clasts yielded a mean age of 339.0 +- 0.7 Ma, while oval and spherical grains of another granulite pebble define a slightly younger date of 337.1 +- 1.1 Ma. These ages are interpreted as dating granulite facies metamorphism. Thermochronology and the derived pressure–temperature (P–T) path of the granulite pebbles reflect two-stage exhumation of the granulites. Near-to-isothermal decompression from at least 44 km to mid-crustal depths of around 22 km was followed by a near-isobaric cooling stage based on reaction textures and geothermobarometry. Minimum average exhumation rate corresponds to 2.8–4.3 mm/year. The extensive medium-pressure/ high-temperature overprint on granulite assemblages is dated by U-Pb in monazite at c. 333 Ma. In this paper, U-Pb zircon, monazite and rutile data for crystalline rocks deposited as clasts in the Upper Visean conglomerates at the eastern margin of the Bohemian Massif are reported. U-Pb data of spherical zircon from three different granulite clasts yielded a mean age of 339.0 +- 0.7 Ma, while oval and spherical grains of another granulite pebble define a slightly younger date of 337.1 +- 1.1 Ma. These ages are interpreted as dating granulite facies metamorphism. Thermochronology and the derived pressure–temperature (P–T) path of the granulite pebbles reflect two-stage exhumation of the granulites. Near-to-isothermal decompression from at least 44 km to mid-crustal depths of around 22 km was followed by a near-isobaric cooling stage based on reaction textures and geothermobarometry. Minimum average exhumation rate corresponds to 2.8–4.3 mm/year. The extensive medium-pressure/ high-temperature overprint on granulite assemblages is dated by U-Pb in monazite at c. 333 Ma. (en)
Title	Clasts of Variscan high-grade rocks within Upper Visean conglomerates - a missing link in the late Variscan evolution of Central Europe: constraints from U-Pb chronology Clasts of Variscan high-grade rocks within Upper Visean conglomerates - a missing link in the late Variscan evolution of Central Europe: constraints from U-Pb chronology (en)
skos:prefLabel	Clasts of Variscan high-grade rocks within Upper Visean conglomerates - a missing link in the late Variscan evolution of Central Europe: constraints from U-Pb chronology Clasts of Variscan high-grade rocks within Upper Visean conglomerates - a missing link in the late Variscan evolution of Central Europe: constraints from U-Pb chronology (en)
skos:notation	RIV/00216224:14310/07:00020843!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA205/99/0567), Z(MSM0021622412)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Kotková, Jana Novák, Milan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	413878
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/07:00020843
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	clast Upper Visean conglomerates U/Pb geochronology (en)
http://linked.open.../riv/klicoveSlovo	clast Upper Visean conglomerates U/Pb geochronology
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[543FDDD3ADC6]
http://linked.open...i/riv/nazevZdroje	Journal of metamorphic Geology
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Exhumation of the Variscan lower crust - constraints Viséan siliciclastics (Eastern Bohemian Massif)
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	25
http://linked.open...iv/tvurceVysledku	Novák, Milan Kotková, Jana Gerdes, Axel Parrish, R. R.
http://linked.open...n/vavai/riv/zamer	Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)
issn	0263-4929
number of pages	21 (xsd:int)
http://localhost/t...ganizacniJednotka	14310

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