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  1. F300 宇宙地球環境研究所
  2. F300b 紀要
  3. 名古屋大学加速器質量分析計業績報告書
  4. 10

ナウマンゾウ臼歯化石のAMS<14>^C年代 : XAD-2樹脂を用いて

https://doi.org/10.18999/sumrua.10.139
https://doi.org/10.18999/sumrua.10.139
dcf963e8-7ea2-4861-92e5-a08b3ecf6b33
名前 / ファイル ライセンス アクション
KJ00000187290.pdf KJ00000187290.pdf (608.2 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2010-05-25
タイトル
タイトル ナウマンゾウ臼歯化石のAMS<14>^C年代 : XAD-2樹脂を用いて
その他のタイトル
その他のタイトル AMS <14>^C age of a Molar fossil of Maumann's elephant : with XAD-2 resin
著者 南, 雅代

× 南, 雅代

WEKO 80820

南, 雅代

Search repository
Minami, Masayo

× Minami, Masayo

WEKO 80821

Minami, Masayo

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中村, 俊夫

× 中村, 俊夫

WEKO 80822

中村, 俊夫

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Nakamura, Toshio

× Nakamura, Toshio

WEKO 80823

Nakamura, Toshio

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権利
権利情報 名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
権利
権利情報 本文データは学協会の許諾に基づきCiNiiから複製したものである
抄録
内容記述 The predominant contaminants such as humic and fulvic acids affect ^<14>C date and stable isotope analyses in fossil bone. The XAD-2 treatment of collagen hydrolysate is considered an effective method to eliminate the foreign organic matter from bone. In this study, we have conducted ^<14>C dating, by the XAD-2 method, on a molar fossil of Naumann's elephant (Palaeoloxodon naumanni) collected from the Uwa-sea, offshore Natori-kajitanihana, Nishi-Uwa-gun, Ehime prefecture. The ^<14>C date of 29,200±870 yr BP was already obtained for gelatin collagen by gelatin-extraction method of decalcification in a cellulose tube with 1.2N HCl, followed by heating at 90℃ in water (Nakamura et al., 1998). Three parts of dentine, enamel and cement in the molar fossil were separated for each ^<14>C dating. The samples were decalcificated with 4℃, 0.8N HCl and the acid-insoluble residues were concentrated by centrifugation and lyophilized. The demineralized fractions were hydrolysed with 6N HCl at 110℃. The filtered hydrolysates were passed through the XAD-2 resin to remove fulvic and humic acids. Dentine phase in the molar fossil gives older ^<14>C age than enamel and cement phases. It is thought that the dentine, covered with enamel and cement phases, is better-preserved. The ^<14>C age of the XAD-purified hydrolysates (XAD) is older than that of solution collagen (SC), but coincide with age of gelatin collagen (GC) in dentine phase. Enamel phase gives different C/N ratio, δ ^<13>C and δ ^<15>N values from those of dentine and cement phases, and relatively younger age, which indicates that the majority of enamel protein has decomposed and changed to hydroxyapatite. All fulvic fractions (F) of three phases give significantly younger ages than bone organic carbon. The molar fossil might be well-preserved because of the higher yield (1.22%) of gelatin collagen more than 1%. The gelatin-extraction method is sufficient for ^<14>C dating on the well-preserved fossil.
内容記述タイプ Abstract
内容記述
内容記述 タンデトロン加速器質量分析計業績報告 Summaries of Researches Using AMS 1998 (平成10)年度
内容記述タイプ Other
出版者
出版者 名古屋大学年代測定資料研究センター 天然放射性元素測定小委員会
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
ID登録
ID登録 10.18999/sumrua.10.139
ID登録タイプ JaLC
関連情報
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://ci.nii.ac.jp/naid/110000475591/
書誌情報 名古屋大学加速器質量分析計業績報告書

巻 10, p. 139-148, 発行日 1999-03
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application/pdf
著者版フラグ
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