Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1979-03-01 |
タイトル |
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言語 |
en |
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タイトル |
Mineralogical Examination of the Yamato-75 Achondrites and Their Layered Crust Model |
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) |
Takeda, Hiroshi
Miyamoto, Masamichi
Ishii, Teruaki
Yanai, Keizo
Matsumoto, Yukio
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著者所属(英) |
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en |
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Mineralogical Institute, Faculty of Science, University of Tokyo/Department of Earth Sciences, Kobe University/Ocean Research Institute, University of Tokyo/National Institute of Polar Research/Department of Geology, Faculty of Liberal Arts, Nagasaki University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
One Fe-rich diogenite and two polymict breccias with eucritic composition have been identified in the Yamato-75 achondrites by the electron microprobe and single crystal X-ray diffraction techniques. The Yamato-75032 diogenite, a monomict breccia, contains a low-Ca inverted pigeonite with a chemical composition close to that of Binda, and a possible primary orthopyroxene. Yamato-75011 and -75015 are polymict breccias which contain mineral and lithic clasts common to eucrites. Binda-like pyroxene fragments were found in Yamato-75015,suggesting that it may represent a variety of materials expected from our layered crust model containing diogenite, Binda-type, Moore County-type, Juvinas-type and Pasamonte-type pyroxenes from bottom to top. Yamato-74659 may be classified as a weathered pyroxene-rich ureilite, which contains the most Mg-rich uninverted pigeonite. The exsolution and shock induced twinning were not observed. Yamato-74123 is another ureilite similar to Kenna. |
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 12,
p. 82-108,
発行日 1979-03
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