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Cambrian granulite to upper amphibolite facies metamorphism of post-797 Ma sediments in Madagascar
https://doi.org/10.18999/joueps.44.89
https://doi.org/10.18999/joueps.44.89fb77b5fb-c1af-432a-bf97-2c4133ebc402
名前 / ファイル | ライセンス | アクション |
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KJ00002415220.pdf (915.6 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2006-01-05 | |||||
タイトル | ||||||
タイトル | Cambrian granulite to upper amphibolite facies metamorphism of post-797 Ma sediments in Madagascar | |||||
言語 | en | |||||
著者 |
ITO, Masahiro
× ITO, Masahiro× SUZUKI, Kazuhiro× YOGO, Setsuo |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
抄録 | ||||||
内容記述 | The CHIME monazite and xenotime ages were determined for two paragneisses from Madagascar. The biotite-sillimanite-cordierite-quartz-microcline-plagioclase schist at Ihosy in southern Madagascar contains core-mantle monazite grains as well as chronologically unzoned ones. The unzoned monazite grains (8 of 11 analyzed grains) give a CHIME age of 527±15 Ma. Two zoned grains show core ages of 1640±180 and 797±75 Ma with mantles of 550±50 and 535±10 Ma, respectively. The kyanite- and corundum-bearing cordierite-sillimanite-muscovite-biotite-plagioclase-quartz gneiss at Maevatanana in northwestern Madagascar contains both monazite and xenotime. Monazite and xenotime grains are chronologically uniform, and give CHIME ages of 534±10 and 530±32 Ma, respectively. These chronological data suggest that the high-grade paragneisses in Madagascar, if not all, formed through a single thermal event at ca. 530 Ma from post-797 Ma sediments. This metamorphism can be linked to the continental collision that resulted in Gondwana supercontinent. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | Dept. of Earth and Planetary Sciences, Nagoya University | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/joueps.44.89 | |||||
ID登録タイプ | JaLC | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0919875X | |||||
書誌情報 |
en : The Journal of earth and planetary sciences, Nagoya University 巻 44, p. 89-102, 発行日 1997-12 |
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フォーマット | ||||||
application/pdf | ||||||
著者版フラグ | ||||||
値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/2837 | |||||
識別子タイプ | HDL |