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Infrared diffuse reflectance spectra of several thermallymetamorphosed carbonaceous chondrites
https://doi.org/10.15094/00004575
https://doi.org/10.15094/00004575ec346c12-829d-4a0c-9043-a7a1f0e8ae7f
名前 / ファイル | ライセンス | アクション |
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KJ00000036381 (1.6 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1992-03-01 | |||||
タイトル | ||||||
タイトル | Infrared diffuse reflectance spectra of several thermallymetamorphosed carbonaceous chondrites | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15094/00004575 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Miyamoto, Masamichi
× Miyamoto, Masamichi |
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著者所属(英) | ||||||
en | ||||||
Department of Pure and Applied Science, University of Tokyo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Infrared diffuse reflectance spectra (2.53-25μm) were measured for several Antarctic carbonaceous chondrites. Thermally metamorphosed carbonaceous chondrites with CI-CM affinities (Belgica (B)-7904,Yamato (Y)-793321,Y-82162,and Y-86720), which were recently found in the Antarctic collection, show weaker absorption bands near 3μm due to hydrous minerals, compared with the Murchison (CM) carbonaceous chondrite. These results show that hydrous minerals are dehydrated as a result of thermal metamorphism, consistent with the results of chemical, mineralogical, and petrologic studies. B-7904,Y-793321,and Y-86720 show weaker absorption bands near 6.9μm due to carbonates than those of Murchison. For Y-82162,the 1450cm^<-1> (6.9μm) band is relatively strong unlike the other thermally metamorphosed carbonaceous chondrites despite the weak 3μm band of all the thermally metamorphosed ones measured. The shape of the spectral curves near 3μm of the thermally metamorphosed carbonaceous chondrites resembles those of Antarctic ordinary chondrites affected by terrestrial weathering, implying that major absorption features near 3μm of the thermally metamorphosed carbonaceous chondrites may be due to secondary hydrous minerals produced by terrestrial weathering. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10784627 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites 巻 5, p. 155-164, 発行日 1992-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |