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Alteration of chondrules and matrices in the four Antarctic carbonaceous chondrites ALH-77307 (C3), Y-790123 (C2), Y-75293 (C2), and Y-74662 (C2)
https://nipr.repo.nii.ac.jp/records/1554
https://nipr.repo.nii.ac.jp/records/15543f229c79-f0ba-4a9b-8186-9e86f9a16a46
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000012187.pdf (1.5 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 1983-12-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Alteration of chondrules and matrices in the four Antarctic carbonaceous chondrites ALH-77307 (C3), Y-790123 (C2), Y-75293 (C2), and Y-74662 (C2) | |||||
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) |
Ikeda, Yukio
× Ikeda, Yukio |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Faculty of Science,Ibaraki University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Alteration products of the groundmasses in chondrules of the C chondrites ALH-77307,Y-790123,Y-75293,and Y-74662 consist mainly of chlorite (and/or berthierine) containing high Al_2O_3 contents, and those of the matrices are mainly serpentine with minor amounts of Al_2O_3 contents. This difference reflects that of their precursor materials prior to the alteration. The degrees of chondrule alteration are various within a chondrite and among the four chondrites studied, and are classified into four stages (I, II, III, and IV ranging from weak to intense alteration) according to petrographic criteria. Most chondrules in ALH-77307 are stage II, and those in Y-74662 are stage III. Y-790123 and Y-75293 include the chondrules of stages II and III. The alteration of chondrules and matrices took place prior to the final agglomeration of these chondrites. | |||||
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. 93-108, 発行日 1983-12 |