Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1983-12-01 |
タイトル |
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言語 |
en |
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タイトル |
A Sr and Nd isotopic study of five Yamato polymict eucrites and a comparison to other Antarctic and ordinary eucrites |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Wooden, J.L.
Takeda, Hiroshi
Nyquist, L.E.
Wiesmann, H.
Bansal, B.
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著者所属(英) |
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en |
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Lunar and Planetary Institute/Mineralogical Institute, Faculty of Science, University of Tokyo/SN3, NASA-Johnson Space Center/Lockheed, 1830 NASA/Lockheed, 1830 NASA |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Sr and Nd isotopic analysis of five Yamato polymict eucrites indicate that these samples formed at about 4.6 Ga ago with initial Sr and Nd ratios essentially the same as the analyzed non-Antarctic eucrites. The Yamato eucrites have Sr, Sm, and Nd concentrations that consistently lie among the highest found in eucritic samples. This characteristic identifies these Yamato samples as a closely related group. Comparisons between these Yamato samples and other Antarctic polymict eucrites clearly establishes that they all share some characteristic trace element features. Comparisons of Antarctic polymict eucrites with non-Antarctic ordinary eucrites reveal consistent differences. The most obvious is an enrichment of Rb in the polymict eucrites. These comparisons suggest that the Antarctic polymict eucrites belong to a single large family of material that is itself fairly diverse and distinct from the non-Antarctic eucrites. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 30,
p. 315-322,
発行日 1983-12
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