@article{oai:nagoya.repo.nii.ac.jp:00019978,
 author = {城森, 由佳 and 南, 雅代 and 鈴木, 和博 and Jomori, Yuka and Minami, Masayo and Suzuki, Kazuhiro},
 journal = {名古屋大学加速器質量分析計業績報告書},
 month = {Mar},
 note = {We investigate the chemical composition and strontium isotope ratios (87Sr/86Sr) of different grain-size fractions of stream sediments collected from the drainage area containing only granite. The 87Sr/86Sr variation exhibited from 0.7099 to 0.7105 according to grain-size with minimum values in the 300-180 μm fraction. The grain-size variation is considered to be potentially caused by different mineral resistance to weathering. Meanwhile, the inter-site mineralogical heterogeneity was smallest in the 180-75 μm fraction, and the 87Sr/86Sr inter-site variation was smallest, 0.70992-0.70995, in the 300-180 μm fraction. The results suggest that stream sediments from medium sand size to very fine sand size are approximate the representative chemical features without inter-site mineral and chemical heterogeneities., 我々は，粒径別に篩い分けた花崗岩起源河川堆積物の粒径別元素濃度・87Sr/86Sr変動を明らかに した。ほとんどの元素は粒径分画により濃度が変動し，鉱物組成の違いを反映している。87Sr/86Sr については，全粒径分画の値が0.7099-0.7105と変動が小さく，地点別変動が最も小さいのは 300-180μm分画(0.70992-0.70995)であった。本研究結果から，河川堆積物により地球化学図の作 成を行う場合には，中粒砂から極細粒砂の粒径分画を用いるのが適していると結論付けられる。, 名古屋大学年代測定総合研究センターシンポジウム報告},
 pages = {114--119},
 title = {粒径別河川堆積物の元素濃度およびSr同位体比},
 volume = {26},
 year = {2015}
}