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)

Result code in 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>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

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)

Original language description

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

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DD - Geochemistry

OECD FORD branch

—

Project

<a href="/en/project/LK11202" target="_blank" >LK11202: The role of Paleozoic accretionary and collisanal orogens on the formation and growth of continental crust</a><br>

Continuities

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

Publication year

2014

Confidentiality

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

Name of the periodical

Mineralogia. Special Papers

ISSN

1899-8518

e-ISSN

—

Volume of the periodical

42

Issue of the periodical within the volume

říjen

Country of publishing house

PL - POLAND

Number of pages

8

Pages from-to

17-24

UT code for WoS article

—

EID of the result in the Scopus database

—