Late Devonian subduction and back-arc extension at the western margin of Brunia: evidence from metavolcanic rocks of the Vrbno Group (Silesicum, north-eastern Bohemian Massif)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F14%3A00000220" target="_blank" >RIV/00025798:_____/14:00000220 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Late Devonian subduction and back-arc extension at the western margin of Brunia: evidence from metavolcanic rocks of the Vrbno Group (Silesicum, north-eastern Bohemian Massif)

Popis výsledku v původním jazyce

The low-grade metavolcanic/volcanosedimentary complex of the Devonian Vrbno Group (Silesicum, NE Bohemian Massif, Czech Republic) occurs in two ~NE?SW trending belts, separated by tectonic slices of Cadomian metagranitic paraautochton. (1) The basic?intermediate lavas of the calc-alkaline Western Volcanic Belt came from a moderately depleted mantle. Rare rhyolites (374.0 ? 1.7 Ma: 2 sigma, LA?ICP?MS U?Pb Zrn) were derived most likely from immature crust or by extensive fractionation of primary basalticmelts. The rock association is interpreted as a vestige of a deeply dissected continental arc. (2) The Eastern Volcanic Belt consists mainly of (nearly) contemporaneous (371.0 ? 1.4 Ma) felsic alkaline lavas with high HFSE contents, as well as high Ga/Aland Fe/Mg ratios, typical of within-plate igneous setting. The petrology and Nd?Sr isotopic data point to a high-T anatexis of a young metagranitic crust, resembling the Cadomian (Brunovistulian) basement, in a back-arc setting. The atte

Název v anglickém jazyce

Late Devonian subduction and back-arc extension at the western margin of Brunia: evidence from metavolcanic rocks of the Vrbno Group (Silesicum, north-eastern Bohemian Massif)

Popis výsledku anglicky

The low-grade metavolcanic/volcanosedimentary complex of the Devonian Vrbno Group (Silesicum, NE Bohemian Massif, Czech Republic) occurs in two ~NE?SW trending belts, separated by tectonic slices of Cadomian metagranitic paraautochton. (1) The basic?intermediate lavas of the calc-alkaline Western Volcanic Belt came from a moderately depleted mantle. Rare rhyolites (374.0 ? 1.7 Ma: 2 sigma, LA?ICP?MS U?Pb Zrn) were derived most likely from immature crust or by extensive fractionation of primary basalticmelts. The rock association is interpreted as a vestige of a deeply dissected continental arc. (2) The Eastern Volcanic Belt consists mainly of (nearly) contemporaneous (371.0 ? 1.4 Ma) felsic alkaline lavas with high HFSE contents, as well as high Ga/Aland Fe/Mg ratios, typical of within-plate igneous setting. The petrology and Nd?Sr isotopic data point to a high-T anatexis of a young metagranitic crust, resembling the Cadomian (Brunovistulian) basement, in a back-arc setting. The atte

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

<a href="/cs/project/LK11202" target="_blank" >LK11202: Role paleozoických akrečních a kolizních orogénů na tvorbu a růst kontinentální kůry</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Mineralogia. Special Papers

ISSN

1899-8518

e-ISSN

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Svazek periodika

42

Číslo periodika v rámci svazku

říjen

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

8

Strana od-do

17-24

Kód UT WoS článku

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EID výsledku v databázi Scopus

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