Geological position and origin of augen gneisses from the Polička Unit, eastern Bohemian Massif

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F09%3A00000124" target="_blank" >RIV/00025798:_____/09:00000124 - 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

Geological position and origin of augen gneisses from the Polička Unit, eastern Bohemian Massif

Popis výsledku v původním jazyce

Augen gneisses are a peculiar lithological type of the Polička Unit, which can be divided into two main petrographic groups: augen metagranitoids and migmatitic augen gneisses. Both of the groups represent products of magmatic and metamorphic processes.Tonalitic to granodioritic synkinematic intrusions were emplaced into metasedimentary rocks of the Polička Unit during the Late Variscan orogeny, forming plutonic bodies and dykes. Residual fluids from granitic melts pervasively infiltrated the metasedimentary protolith causing a fluid-enhanced partial melting. Melting produced porphyroblastic migmatites with a granite composition. The characteristic augen textures developed from granitic and migmatitic protoliths during a high-temperature deformation in subsolidus conditions. Both the augen metagranitoids and the migmatitic augen gneisses were affected by a subsequent deformation in the shear zone related with thrusting of the Polička Unit over the Svratka Unit.

Název v anglickém jazyce

Geological position and origin of augen gneisses from the Polička Unit, eastern Bohemian Massif

Popis výsledku anglicky

Augen gneisses are a peculiar lithological type of the Polička Unit, which can be divided into two main petrographic groups: augen metagranitoids and migmatitic augen gneisses. Both of the groups represent products of magmatic and metamorphic processes.Tonalitic to granodioritic synkinematic intrusions were emplaced into metasedimentary rocks of the Polička Unit during the Late Variscan orogeny, forming plutonic bodies and dykes. Residual fluids from granitic melts pervasively infiltrated the metasedimentary protolith causing a fluid-enhanced partial melting. Melting produced porphyroblastic migmatites with a granite composition. The characteristic augen textures developed from granitic and migmatitic protoliths during a high-temperature deformation in subsolidus conditions. Both the augen metagranitoids and the migmatitic augen gneisses were affected by a subsequent deformation in the shear zone related with thrusting of the Polička Unit over the Svratka Unit.

Druh

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

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Journal of Geosciences

ISSN

1802-6222

e-ISSN

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Svazek periodika

54

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

18

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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