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

J. A. Baldwin; R. Powell; R. W. White; P. Stipska

doi:10.1111/jmg.12122

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

J. A. Baldwin^*, R. Powell, R. W. White, P. Stipska

^*Corresponding author for this work

School of Earth & Environmental Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

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 Southern Domain of the Athabasca granulite terrane, a segment of the Snowbird tectonic zone in northern Saskatchewan, Canada. Metamorphic conditions of >14kbar and 800 degrees 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

Original language	English
Pages (from-to)	311-330
Number of pages	20
Journal	Journal of Metamorphic Geology
Volume	33
Issue number	3
DOIs	https://doi.org/10.1111/jmg.12122
Publication status	Published - Apr 2015

Keywords

Athabasca granulite terrane
chemical potential
garnet-kyanite granulite
sapphirine-spinel-corundum-plagioclase symplectite
Snowbird tectonic zone
WESTERN CANADIAN SHIELD
SNOWBIRD TECTONIC ZONE
ATHABASCA MYLONITE ZONE
HIGH-TEMPERATURE METAMORPHISM
HIGH-P GRANULITES
GEOCHRONOLOGICAL CONSTRAINTS
NORTHERN SASKATCHEWAN
HETEROGENEOUS STRAIN
PHASE-EQUILIBRIA
BOHEMIAN MASSIF

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10.1111/jmg.12122

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

abstract = "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 Southern Domain of the Athabasca granulite terrane, a segment of the Snowbird tectonic zone in northern Saskatchewan, Canada. Metamorphic conditions of >14kbar and 800 degrees 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",

keywords = "Athabasca granulite terrane, chemical potential, garnet-kyanite granulite, sapphirine-spinel-corundum-plagioclase symplectite, Snowbird tectonic zone, WESTERN CANADIAN SHIELD, SNOWBIRD TECTONIC ZONE, ATHABASCA MYLONITE ZONE, HIGH-TEMPERATURE METAMORPHISM, HIGH-P GRANULITES, GEOCHRONOLOGICAL CONSTRAINTS, NORTHERN SASKATCHEWAN, HETEROGENEOUS STRAIN, PHASE-EQUILIBRIA, BOHEMIAN MASSIF",

author = "Baldwin, {J. A.} and R. Powell and White, {R. W.} and P. Stipska",

year = "2015",

month = apr,

doi = "10.1111/jmg.12122",

language = "English",

volume = "33",

pages = "311--330",

journal = "Journal of Metamorphic Geology",

issn = "0263-4929",

publisher = "John Wiley & Sons, Ltd",

number = "3",

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TY - JOUR

T1 - Using calculated chemical potential relationships to account for replacement of kyanite by symplectite in high pressure granulites

AU - Baldwin, J. A.

AU - Powell, R.

AU - White, R. W.

AU - Stipska, P.

PY - 2015/4

Y1 - 2015/4

N2 - 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 Southern Domain of the Athabasca granulite terrane, a segment of the Snowbird tectonic zone in northern Saskatchewan, Canada. Metamorphic conditions of >14kbar and 800 degrees 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

AB - 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 Southern Domain of the Athabasca granulite terrane, a segment of the Snowbird tectonic zone in northern Saskatchewan, Canada. Metamorphic conditions of >14kbar and 800 degrees 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

KW - Athabasca granulite terrane

KW - chemical potential

KW - garnet-kyanite granulite

KW - sapphirine-spinel-corundum-plagioclase symplectite

KW - Snowbird tectonic zone

KW - WESTERN CANADIAN SHIELD

KW - SNOWBIRD TECTONIC ZONE

KW - ATHABASCA MYLONITE ZONE

KW - HIGH-TEMPERATURE METAMORPHISM

KW - HIGH-P GRANULITES

KW - GEOCHRONOLOGICAL CONSTRAINTS

KW - NORTHERN SASKATCHEWAN

KW - HETEROGENEOUS STRAIN

KW - PHASE-EQUILIBRIA

KW - BOHEMIAN MASSIF

U2 - 10.1111/jmg.12122

DO - 10.1111/jmg.12122

M3 - Article

SN - 0263-4929

VL - 33

SP - 311

EP - 330

JO - Journal of Metamorphic Geology

JF - Journal of Metamorphic Geology

IS - 3

ER -

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

Abstract

Keywords

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