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Melting of a Yamato L3 chondrite (Y-74191) up to 30 kbar
https://nipr.repo.nii.ac.jp/records/1558
https://nipr.repo.nii.ac.jp/records/1558fa0af517-0616-436f-8518-30475aec3bd5
名前 / ファイル | ライセンス | アクション |
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KJ00000012191.pdf (1.8 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1983-12-01 | |||||
タイトル | ||||||
タイトル | Melting of a Yamato L3 chondrite (Y-74191) up to 30 kbar | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
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 | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Takahashi, Eiichi
× Takahashi, Eiichi |
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著者所属(英) | ||||||
言語 | en | |||||
値 | Institute for Thermal Spring Research,Okayama University | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Melting phase relations of a Yamato L3 chondrite (Y-74191) have been studied in the pressure range 6 to 30 kbar. Solidus of the chondrite is defined by eutectic melting of Fe-Ni-S at about 950℃ regardless of pressure. At 15 kbar, silicate solidus of the chondrite is about 250℃ higher than the metal/sulfide eutectic solidus and the temperature interval between the two solidi widens as pressure increases. Composition of the metal/sulfide melt changes from FeS-rich to Fe-Ni-rich as temperature increases. Ferrobasaltic liquids containing 18 to 23wt% FeO and 0.2wt% sulfur are produced as partial melts over a large pressure and temperature interval. At low temperatures below the silicate solidus, the metal/sulfide melts are small isolated patches dispersed in grain boundaries of silicate minerals. At high temperatures, the metal/sulfide melts become numerous globules surrounded by silicate melts. Segregation of the ferrobasaltic partial melt on top of the residual olivines and the metal/sulfide globules has been observed. Gravitational settling of the dense metal/sulfide globules, however, did not take place under any experimental condition at least up to 10hr. Based on the partial melting experiments a model for genesis of pallasite meteorite is proposed. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 30, p. 168-180, 発行日 1983-12 |