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Geochronological evidence for multistage-metamorphic events in ultrahigh-temperature granulites from central Highland Complex, Sri Lanka
https://doi.org/10.15094/00003126
https://doi.org/10.15094/00003126db806e1c-2c11-4144-bf3f-762efa74fdc7
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000044120 (2.8 MB)
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| Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2003-10-01 | |||||
| タイトル | ||||||
| タイトル | Geochronological evidence for multistage-metamorphic events in ultrahigh-temperature granulites from central Highland Complex, Sri Lanka | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | central Highland Complex | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Sri Lanka | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | UHT granulites | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Sm-Nd geochronology | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | multistage metamorphism | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15094/00003126 | |||||
| ID登録タイプ | JaLC | |||||
| ページ属性 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | P(論文) | |||||
| 著者名(英) |
Sajeev, Krishnan
× Sajeev, Krishnan× Osanai, Yasuhito× Suzuki, Satoko× Kagami, Hiroo |
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| 著者所属(英) | ||||||
| 言語 | en | |||||
| 値 | Department of Earth and Planetary System Science,Okayama University | |||||
| 著者所属(英) | ||||||
| 言語 | en | |||||
| 値 | Department of Earth and Planetary System Science, Okayama University | |||||
| 著者所属(英) | ||||||
| 言語 | en | |||||
| 値 | Graduate School of Science and Technology, Niigata University | |||||
| 著者所属(英) | ||||||
| 言語 | en | |||||
| 値 | Graduate School of Science and Technology, Niigata University | |||||
| 抄録(英) | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | The ultrahigh-temperature (UHT)granulite from the central Highland Complex,Sri Lanka preserves histories of several metamorphic events.The application of geothermobarometries on sapphirine-garnet-orthopyroxene-sillimanite-quartz bearing granulites confirms that metamorphism occurred under the UHT condition. We report a middle Proterozoic age of 1478+-58 Ma from the internal isochron using a garnet core,whole rock and felsic fraction (quartz in the Sm-Nd system from the same rock samples.As this granulite preserves several stages of orthopyroxene formation,the measured isotope composition of orthopyroxene give mixed values.The reference isochron plotted with orthopyroxene and whole rock give an age of 550 Ma.The present results can be interpreted to mean that the middle Proterozoic metamorphic event could have been the thermal peak.During the uplift stage,this granulite might have remetamorphosed at younger stages along with the adjacent rocks. | |||||
| 雑誌書誌ID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA1130866X | |||||
| 書誌情報 |
Polar geoscience 巻 16, p. 137-148, 発行日 2003-10 |
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| 出版者 | ||||||
| 出版者 | National Institute of Polar Research | |||||
