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A preliminary report on the achondrite meteorites in the 1979 U.S. Antarctic meteorite collection
https://nipr.repo.nii.ac.jp/records/1202
https://nipr.repo.nii.ac.jp/records/1202fa00e897-eb28-4fa2-9319-a232c7be8fba
名前 / ファイル | ライセンス | アクション |
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KJ00000011728 (2.2 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1981-12-01 | |||||
タイトル | ||||||
タイトル | A preliminary report on the achondrite meteorites in the 1979 U.S. Antarctic meteorite collection | |||||
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) |
Reid, Arch M.
× Reid, Arch M.× Score, Roberta |
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著者所属(英) | ||||||
言語 | en | |||||
値 | Department of Geology, University of Cape Town | |||||
著者所属(英) | ||||||
言語 | en | |||||
値 | Northrop Services, Inc. | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The 1979 U.S. Antarctic meteorite collection comprises 73 meteorites, 7 of which are achondrites. The achondrite collection consists of one eucrite (390g), three polymict eucrites (86; 310; 451g), one howardite (716g), one shergottite (7.9kg), and one diogenite (2.8kg). Also present in the 1979 collection is a unique iron meteorite (10kg) with abundant silicate (orthopyroxene) inclusions. The most interesting meteorite is the shergottite in which two distinct lithologies are joined along what appears to be an undisturbed igneous contact. The fine grained lithology present at one end of the sample is texturally and mineralogically similar to Shergotty but is finer grained. The major portion of the meteorite consists of large complex zoned pyroxenes in a groundmass of pyroxene and maskelynite. The overall pyroxene to feldspar ratio is higher than in the Shergottylike portion and the pyroxenes are more Mg-rich and Ca-poor. Plagioclase has been converted to maskelynite in both lithologies and glass veinlets and pockets of black glass occur throughout the meteorite. Five of the seven achondrites were found in a new collection site, Elephant Moraine (EET). This site will be further investigated in the future. | |||||
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 20, p. 33-52, 発行日 1981-12 |