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High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene
https://doi.org/10.15094/00003109
https://doi.org/10.15094/00003109483c5674-3c54-4298-8344-d6b4fa797c40
名前 / ファイル | ライセンス | アクション |
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KJ00000044227 (2.5 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2002-10-01 | |||||
タイトル | ||||||
タイトル | High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | P-T diagram of the Mg-rich garnet system | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Fe-Mg paititioning | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | geothermometer | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ultrahigh-temperature 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 | 10.15094/00003109 | |||||
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) |
Sato, Kei
× Sato, Kei× Kawasaki, Toshisuke |
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著者所属(英) | ||||||
en | ||||||
Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University/Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The phase lelations in the system of Mg-rich garnet composition (P_1p_<75>Alm_<25>) were investigated using a piston cylinder appaiatus at 11-23 kbai and 1000-1300℃ The following mineral assemblages were obtained with decieasing pressure at 1200℃ garnet, garnet + oithopyroxene + sapphinne + quartz, orthopyroxene + sapphmne + quartz At 11 kbar the assemblage of orthopyioxene + sapphirine + quartz changed to that of orthopyroxene + sapphirine + quartz + sillimanite at a certain temperatuie between 1000 and 1100℃ The Fe-Mg distribution coefficients of coexisting garnet and orthopyioxene K_D = (X_<Mg>/X_<〓〓>)^<0p〓>(X_<〓〓>/X_<Mg>)^<cnt> was experimentally determined The new gamet-oithopyroxene geothermometet has been obtained as 7(℃) = (2387±146)/[1nK_D + (1 20±0 10)]-273 We estimated the retrogiade metamoiphic temperatures of UHT metamorphic rocks from Enderby Land East Antaictica as 812-1010℃ Our estimations matched with previous estimations based on Fe-Mg exchange and were about 200-300℃ lowei than those of previous estimations based on feldspai theimometry | |||||
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 15, p. 66-79, 発行日 2002-10 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |