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A laboratory experiment on the influence of aqueous alteration on noble gas compositions in the Allende meteorite
https://doi.org/10.15094/00005974
https://doi.org/10.15094/00005974f782a0bf-ccce-4df4-b79f-31db7a04c8ec
名前 / ファイル | ライセンス | アクション |
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KJ00000040966 (1.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2000-03-01 | |||||
タイトル | ||||||
タイトル | A laboratory experiment on the influence of aqueous alteration on noble gas compositions in the Allende meteorite | |||||
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 | 10.15094/00005974 | |||||
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) |
Nakasyo,Eiji
× Nakasyo,Eiji× Maruoka,Teruyuki× Matsumoto,Takuya× Matsuda,Jun-ichi |
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著者所属(英) | ||||||
en | ||||||
Department of Earth and Space Science, Graduate School of Science, Osaka University/Department of Earth and Space Science, Graduate School of Science, Osaka University/Department of Earth and Space Science, Graduate School of Science, Osaka University/Department of Earth and Space Science, Graduate School of Science, Osaka University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | We have carried out a hydrothermal experiment on the Allende CV chondrite, in order to understand the observed noble gas loss from CM and CI chondrites, possibly caused by aqueous alteration on their parent bodies (L. B. Browning et al., Geochim. Cosmochim. Acta, 60,2621,1996; T. Nakamura et al., Geochim. Cosmochim. Acta, 63,257,1999). The Allende meteorite was disaggregated and kept with liquid water in a pressurized vessel under 15 atm of water vapor at 200℃ for a week. The abundances of helium, neon, argon, krypton and xenon in the samples have been measured by stepwise heating technique. The abundances of noble gases were decreased by 24% (He), 27% (Ne), 38% (Ar), 23% (Kr) and 34% (Xe) after the hydrothermal treatment, suggesting that the hot water treatment had contributed to reduce the concentrations of noble gases in Allende. This gas loss also affected the isotopic composition of xenon. For the 1200℃ fraction, the amount of ^<132>Xe-HL was decreased from the sample by about 80% during the hot water treatment, while that of ^<132>Xe-Q was decreased to a lesser extent (∿40%). This result seems to indicate that the carrier of Xe-HL is less resistant to the gas loss by the hot water alteration than phase Q for high temperature components. However, further studies are required as this trend becomes less obvious and rather similar if we take into consideration the xenon of 800℃ fraction. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11182426 | |||||
書誌情報 |
Antarctic meteorite research 巻 13, p. 135-144, 発行日 2000-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |