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Preliminary CHIME dating of granites from the Nkambe area, northwestern Cameroon, Africa
https://doi.org/10.18999/joueps.46.57
https://doi.org/10.18999/joueps.46.57c1c637d3-cef2-462b-baea-8f50f102cf2b
名前 / ファイル | ライセンス | アクション |
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KJ00000037602.pdf (1.1 MB)
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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 | Preliminary CHIME dating of granites from the Nkambe area, northwestern Cameroon, Africa | |||||
言語 | en | |||||
著者 |
Tetsopgang, Samuel
× Tetsopgang, Samuel× Suzuki, Kazuhiro× Adachi, Mamoru |
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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 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The chemical Th-U-total Pb isochron method (CHIME) has been adopted for dating the syntectonic foliated and post-tectonic unfoliated granites in northwestern Cameroon. The CHIME ages are 532±35 Ma for allanite and 523±45 Ma for zircon from Sample I_<10> of foliated biotite granite, 530±9 Ma for monazite from Sample N_9 of foliated two-mica granite, and 510±25 Ma for monazite from Sample I_4 of unfoliated two-mica granite. Several monazite grains from Samples N_9 and I_4 yield 436±13 and 420±16 Ma CHIME ages, respectively. The 532-510 Ma ages are interpreted as the time of granite emplacement and the 436-420 Ma ages as the time of hydrothermal alteration. The CHIME ages coupled with the concordant relation between the foliated granites and migmatitic gneiss suggest a ca. 530 Ma metamorphic-plutonic episode in northwestern Cameroon rather than a thermal overprint by granite intrusion. | |||||
言語 | en | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 国立情報学研究所で電子化したコンテンツを使用している。 | |||||
言語 | ja | |||||
出版者 | ||||||
出版者 | Dept. of Earth and Planetary Sciences, Nagoya University | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | 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.46.57 | |||||
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 46, p. 57-70, 発行日 1999-12 |
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値 | application/pdf | |||||
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値 | publisher | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2237/2847 | |||||
識別子タイプ | HDL |