Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1997-09-01 |
タイトル |
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タイトル |
AN EXPERIMENTAL STUDY OF Fe-Mg PARTITIONINGS BETWEEN ORTHOPYROXENE AND CORDIERITE IN THE Mg-RICH PORTION OF THE Mg_3Al_2Si_3O_<12>-Fe_3Al_2Si_3O_<12> SYSTEM AT ATMOSPHERIC PRESSURE : CALIBRATION OF ITS GEOTHERMOMETRY FOR HIGH-TEMPERATURE GRANULITES AND IGNEOUS ROCKS |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
orthopyroxene |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
cordierite |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Fe-Mg partitioning |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
geothermometer |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
granulite |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00002852 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
論文名よみ |
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その他のタイトル |
AN EXPERIMENTAL STUDY OF Fe-Mg PARTITIONINGS BETWEEN ORTHOPYROXENE AND CORDIERITE IN THE Mg-RICH PORTION OF THE Mg_3Al_2Si_3O_<12>-Fe_3Al_2Si_3O_<12> SYSTEM AT ATMOSPHERIC PRESSURE : CALIBRATION OF ITS GEOTHERMOMETRY FOR HIGH-TEMPERATURE GRANULITES AND IGNEOUS ROCKS |
著者名よみ |
サカイ, サトシ
カワサキ, トシスケ
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著者名(英) |
SAKAI, Satoshi
KAWASAKI, Toshisuke
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著者所属(英) |
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en |
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Division of Earth Sciences, Department of Biosphere and Geosphere Sciences, Faculty of Science, Ehime University |
著者所属(英) |
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en |
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Division of Earth Sciences, Department of Biosphere and Geosphere Sciences, Faculty of Science, Ehime University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Exchange reactions of Fe^<2+> and Mg^<2+> between orthopyroxene and cordierite (abbreviated to Opx and Crd, respectively) : [chemical formula] were experimentally investigated in the Mg-rich portion of the pyrope (Mg_3Al_2Si_3O_<12>)-almandine (Fe_3Al_2Si_3O_<12>) system at temperatures from 1000℃ to 1325℃ under atmospheric pressure. Combining the volume data, the distribution coefficient of Fe-Mg partitionings between these phases, K_D(=[numerical formula]), was formulated as ln K_D=(1424+7.02P)/T-0.619,where P and T are in kbar and K. This reaction is temperature-dependent and would be a useful geothermometer. The applications of this orthopyroxene-cordierite thermometer to some Antarctic granulites yield equilibration temperatures of 100℃-200℃ lower than the previous estimations. This suggests that the exchange reaction of Fe^<2+> and Mg^<2+> between orthopyroxene and cordierite continued down to closure temperatures of 500℃-600℃ caused by subsequent cooling after the peak of metamorphism. Temperature estimations using the present orthopyroxene-cordierite thermometer for the igneous suites including S-type tonalite, rhyolite and granulitic xenoliths in andesite are in good agreement with those obtained from other thermometers. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA1072335X |
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences
巻 10,
p. 165-177,
発行日 1997-09
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出版者 |
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出版者 |
National Institute of Polar Research |