Garnet pyroxenite in the Biskupice peridotite, Bohemian Massif: anatomy of a Variscan high-pressure cumulate

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F13%3A10139589" target="_blank" >RIV/00216208:11310/13:10139589 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.3190/jgeosci.131" target="_blank" >http://dx.doi.org/10.3190/jgeosci.131</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3190/jgeosci.131" target="_blank" >10.3190/jgeosci.131</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Garnet pyroxenite in the Biskupice peridotite, Bohemian Massif: anatomy of a Variscan high-pressure cumulate

Popis výsledku v původním jazyce

A strongly layered garnet pyroxenite, consisting of cm-scale layers of garnetite, garnet orthopyroxenite, garnet clinopyroxenite, and websterite, occurs in the Biskupice garnet peridotite, which is located in migmatitic gneiss of the Gföhl Assemblage inthe Vysočina District, western Moravia. Major- and trace-element compositions and REE patterns of minerals and layers in the pyroxenite are consistent with origin of the layers by HT-HP crystallization and accumulation of variable proportions of garnet,orthopyroxene, and clinopyroxene. The present compositions of the minerals (pyroperich garnet, low-Al, low-Ca enstatite and low-Al, high-Ca diopside) are the result of extensive subsolidus re-equilibration at ~900 oC and ~37 kbar, during the Variscan (332 Ma) Orogeny. Neodymium and strontium isotopic values (?335Nd, +1.8 to +2.1; (87Sr/86Sr) 335, 0.7049) and negative HFSE anomalies indicate a crustal component in the melt from which the layers crystallized. Most garnet pyroxenites and ec

Název v anglickém jazyce

Garnet pyroxenite in the Biskupice peridotite, Bohemian Massif: anatomy of a Variscan high-pressure cumulate

Popis výsledku anglicky

A strongly layered garnet pyroxenite, consisting of cm-scale layers of garnetite, garnet orthopyroxenite, garnet clinopyroxenite, and websterite, occurs in the Biskupice garnet peridotite, which is located in migmatitic gneiss of the Gföhl Assemblage inthe Vysočina District, western Moravia. Major- and trace-element compositions and REE patterns of minerals and layers in the pyroxenite are consistent with origin of the layers by HT-HP crystallization and accumulation of variable proportions of garnet,orthopyroxene, and clinopyroxene. The present compositions of the minerals (pyroperich garnet, low-Al, low-Ca enstatite and low-Al, high-Ca diopside) are the result of extensive subsolidus re-equilibration at ~900 oC and ~37 kbar, during the Variscan (332 Ma) Orogeny. Neodymium and strontium isotopic values (?335Nd, +1.8 to +2.1; (87Sr/86Sr) 335, 0.7049) and negative HFSE anomalies indicate a crustal component in the melt from which the layers crystallized. Most garnet pyroxenites and ec

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

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

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

—

Svazek periodika

58

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CA - Kanada

Počet stran výsledku

17

Strana od-do

3-19

Kód UT WoS článku

000324553000002

EID výsledku v databázi Scopus

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