Using calculated chemical potential relationships to account for replacement of kyanite by symplectite in high pressure granulites

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F15%3A00000058" target="_blank" >RIV/00025798:_____/15:00000058 - isvavai.cz</a>

Výsledek na webu

<a href="http://onlinelibrary.wiley.com/doi/10.1111/jmg.12122/abstract" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1111/jmg.12122/abstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jmg.12122" target="_blank" >10.1111/jmg.12122</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Using calculated chemical potential relationships to account for replacement of kyanite by symplectite in high pressure granulites

Popis výsledku v původním jazyce

Calculated mineral equilibria are used to account for the formation of sapphirine?plagioclase, spinel?plagioclase and corundum?plagioclase symplectites replacing kyanite in quartz?plagioclase?garnet?kyanite granulite facies gneisses from the Athabasca granulite terrane, the Snowbird tectonic zone, Canada.Metamorphic conditions of ;14 kbar and 800 °C are established for the high pressure, garnet?kyanite assemblage using constraints from P?T pseudosections and Zr-in-rutile thermometry. Replacement of kyanite by symplectites reflects the reaction of kyanite with the matrix following near-isothermal decompression to ;10 kbar. The chemical potential gradients developed between the kyanite and the matrix led to diffusion that attempted to flatten the gradients, kyanite persisting as a stable phase while it is consumed by symplectite from its edge. In this local equilibrium model, the mineral and mineral compositional spatial relationships are shown to correspond to paths in mu(Na2O)?mu(CaO)?

Název v anglickém jazyce

Using calculated chemical potential relationships to account for replacement of kyanite by symplectite in high pressure granulites

Popis výsledku anglicky

Calculated mineral equilibria are used to account for the formation of sapphirine?plagioclase, spinel?plagioclase and corundum?plagioclase symplectites replacing kyanite in quartz?plagioclase?garnet?kyanite granulite facies gneisses from the Athabasca granulite terrane, the Snowbird tectonic zone, Canada.Metamorphic conditions of ;14 kbar and 800 °C are established for the high pressure, garnet?kyanite assemblage using constraints from P?T pseudosections and Zr-in-rutile thermometry. Replacement of kyanite by symplectites reflects the reaction of kyanite with the matrix following near-isothermal decompression to ;10 kbar. The chemical potential gradients developed between the kyanite and the matrix led to diffusion that attempted to flatten the gradients, kyanite persisting as a stable phase while it is consumed by symplectite from its edge. In this local equilibrium model, the mineral and mineral compositional spatial relationships are shown to correspond to paths in mu(Na2O)?mu(CaO)?

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

<a href="/cs/project/LK11202" target="_blank" >LK11202: Role paleozoických akrečních a kolizních orogénů na tvorbu a růst kontinentální kůry</a><br>

Návaznosti

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

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Journal of Metamorphic Geology

ISSN

0263-4929

e-ISSN

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Svazek periodika

33

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

311-330

Kód UT WoS článku

000351210400005

EID výsledku v databázi Scopus

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