Vysoko až ultravysokotlaké parciální tavení v orogenních pásmech: implikace na vzniku felsických granulitů v Českém Masivu.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F08%3A00000167" target="_blank" >RIV/00025798:_____/08:00000167 - 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

High-to ultra-high pressure partial melting in orogenic belts: implications for the formation of felsic granulites from the Bohemian Massif.

Popis výsledku v původním jazyce

Felsic granulites with leucocratic stripes from the Kutna Hora Complex were sampled to estimate PT conditions for partial melt formation. Maximum PT condition estimated using the mineral assemblages present in granulite are about 2-2.2 GP/850-900oC. However, some textural relations and thermodynamic calculations using bulk rock and mineral stability fields as well as core composition of garnet show more higher pressures. It is not always clear, if the granulites passed also ultra-high-pressure conditions. The results of experiment, mainly that at higher pressure and temperature indicated formation of kyanite, ternary feldspars and relatively Ca-rich garnet, close to that in the run material. Both thermodynamic calculations and experimental investigations show that the transition to granulite facies P-T conditions and the formation of partial melt occurred by decompression and heating at ca. 2.2 GPa and 900oC during exhumation.

Název v anglickém jazyce

High-to ultra-high pressure partial melting in orogenic belts: implications for the formation of felsic granulites from the Bohemian Massif.

Popis výsledku anglicky

Felsic granulites with leucocratic stripes from the Kutna Hora Complex were sampled to estimate PT conditions for partial melt formation. Maximum PT condition estimated using the mineral assemblages present in granulite are about 2-2.2 GP/850-900oC. However, some textural relations and thermodynamic calculations using bulk rock and mineral stability fields as well as core composition of garnet show more higher pressures. It is not always clear, if the granulites passed also ultra-high-pressure conditions. The results of experiment, mainly that at higher pressure and temperature indicated formation of kyanite, ternary feldspars and relatively Ca-rich garnet, close to that in the run material. Both thermodynamic calculations and experimental investigations show that the transition to granulite facies P-T conditions and the formation of partial melt occurred by decompression and heating at ca. 2.2 GPa and 900oC during exhumation.

Druh

A - Audiovizuální tvorba

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

2008

Kód důvěrnosti údajů

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

ISBN

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Místo vydání

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Název nakladatele resp. objednatele

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Verze

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Identifikační číslo nosiče

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