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Sr/Ca-Ba/Ca systematics in Antarctic Ca-rich achondrites and their origins
https://nipr.repo.nii.ac.jp/records/1214
https://nipr.repo.nii.ac.jp/records/12140325aeee-3900-4bc4-93f8-1400d0568c5f
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000011740 (1.3 MB)
|
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 | ||||||
言語 | en | |||||
タイトル | Sr/Ca-Ba/Ca systematics in Antarctic Ca-rich achondrites and their origins | |||||
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) |
Onuma, Naoki
× Onuma, Naoki× Hirano, Masatake |
|||||
著者所属(英) | ||||||
en | ||||||
Institute of Chemistry, University of Tsukuba | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The Ca, Sr and Ba contents of six Antarctic polymict eucrites (Y-74450,Y-75011,Y-75015,ALH-765,ALH-78040 and ALH-78132) and a unique Antarctic achondrite (ALH-77005) have been determined by ICP-OES. When the data are plotted in the Sr/Ca-Ba/Ca diagram which enables us to visualize igneous processes such as partial melting and crystal fractionation, the eucrites fall on a crystal fractionation line defined by a set of typical eucrites and the unique achondrite falls on a partial melting line through chondritic Sr/Ca and Ba/Ca ratios. The results suggest that the eucrites are a series of melts evolved from a primary magma by clinopyroxene and plagioclase fractionation, while the unique achondrite is a residual solid phase derived from a chondritic source material by a largescale partial melting. | |||||
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. 202-210, 発行日 1981-12 |