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An overview of the research consortium,"Antarctic carbonaceouschondrites with CI affinities, Yamato-86720, Yamato-82162, andBelgica-7904
https://doi.org/10.15094/00004571
https://doi.org/10.15094/000045716c376f08-d5db-40de-b6b8-e9712d332132
名前 / ファイル | ライセンス | アクション |
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KJ00000036377 (3.7 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1992-03-01 | |||||
タイトル | ||||||
タイトル | An overview of the research consortium,"Antarctic carbonaceouschondrites with CI affinities, Yamato-86720, Yamato-82162, andBelgica-7904 | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15094/00004571 | |||||
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) |
Ikeda, Yukio
× Ikeda, Yukio |
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著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences,Ibaraki University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Three Antarctic meteorites, Yamato (Y)-82162,Y-86720,and Belgica (B)-7904,are unusual carbonaceous chondrites having characteristics of both CI and CM chondrite groups. Therefore, a research consortium has been carried out in 1987-1990,and all the results are summarized here. Remarkable results are; (1) Several minerals that are rare or new in carbonaceous chondrites were found in the consortium chondrites. They are sodian talc, FeO-bearing periclase or magnesiowustite, an unknown Fe-Ca-O-S mineral, rhodochrosite, chalcopyrite, eskolaite, schreibersite, Co-rich metal, Ni-Co-free kamacite, and so on. (2) Phyllosilicate veins were firstly found in Y-82162,suggesting that the hydration took place in the parent body. (3) Detailed mineralogy and petrology of altered chondrules and clasts suggest that most of the phyllosilicates in chondrules and clasts were produced from anhydrous precursors in the solar nebula. (4) At the final stage of the chondrite formation, the three chondrites underwent intense impact-shock or metamorphic heating after the hydrous alteration on their parent body. (5) Mineralogical, chemical, and oxygen isotopic data indicate that the three chondrites have some characteristics of both CI and CM groups, and the genetical relationships between the two groups and the consortium chondrites have been suggested. In addition, a new carbonaceous chondrite group CY is proposed for the three unusual chondrites. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10784627 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites 巻 5, p. 49-73, 発行日 1992-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |