Middle/Late Cambrian intracontinental rifting in the central West Sudetes, NE Bohemian Massif (Czech Republic): geochemistry and petrogenesis of the bimodal metavolcanic rocks.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F01%3A09013246" target="_blank" >RIV/67985831:_____/01:09013246 - 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

Middle/Late Cambrian intracontinental rifting in the central West Sudetes, NE Bohemian Massif (Czech Republic): geochemistry and petrogenesis of the bimodal metavolcanic rocks.

Popis výsledku v původním jazyce

The Early Palaeozoic East Krkonoše Complex situated in the central West Sudetes, NE Bohemian Massif, is a volcano-sedimentary suite containing abundant mafic and felsic volcanics metamorphosed to greenschist facies.The trace element distribution patternsand Nd isotope signatures (ENd500 = +3.1 to +6.6) of the metabasalts indicate that they may be related to a rising mantle diapir associated with intracontinental rifting. At the early stage, limited melting of an upwelling asthenosphere produced alkalibasalts and enriched tholeiites which compositionally resembled oceanic island basalts. A later stage of rifting larger degrees of melting at shallower depths generated tholeiitic basalts with E-MORB to N-MORB characteristics.The values of (87Sr/86Sr)i =0.706 and ENd500 = -5 1 of the metarhyolites as well as the lack of rocks with intermediate composition suggest that the felsic rocks were formed by partial melting of continental crust triggered by mantle melts.The geochemistry of the b

Název v anglickém jazyce

Middle/Late Cambrian intracontinental rifting in the central West Sudetes, NE Bohemian Massif (Czech Republic): geochemistry and petrogenesis of the bimodal metavolcanic rocks.

Popis výsledku anglicky

The Early Palaeozoic East Krkonoše Complex situated in the central West Sudetes, NE Bohemian Massif, is a volcano-sedimentary suite containing abundant mafic and felsic volcanics metamorphosed to greenschist facies.The trace element distribution patternsand Nd isotope signatures (ENd500 = +3.1 to +6.6) of the metabasalts indicate that they may be related to a rising mantle diapir associated with intracontinental rifting. At the early stage, limited melting of an upwelling asthenosphere produced alkalibasalts and enriched tholeiites which compositionally resembled oceanic island basalts. A later stage of rifting larger degrees of melting at shallower depths generated tholeiitic basalts with E-MORB to N-MORB characteristics.The values of (87Sr/86Sr)i =0.706 and ENd500 = -5 1 of the metarhyolites as well as the lack of rocks with intermediate composition suggest that the felsic rocks were formed by partial melting of continental crust triggered by mantle melts.The geochemistry of the b

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název periodika

Geological Journal

ISSN

0072-1050

e-ISSN

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Svazek periodika

36

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

17

Strana od-do

1-17

Kód UT WoS článku

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EID výsledku v databázi Scopus

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