ダウンロード数 : ?
ファイル
言語
英語
著者
Hossain H.M.Zakir
Ulak, Prakash Das
Roser BarryPaul
内容記述(抄録等)
 This report contains whole-rock major and trace element XRF analyses of Middle Miocene to Pleistocene Siwalik Group sandstones (96) and mudstones (80) from the Surai Khola section of western Nepal. All were analyzed by X-ray fluorescence for the major elements and 14 trace elements. The data form part of a larger study of the geochemistry of the Siwalik Group, and supplement a similar data set from the Siwaliks in the Bakiya Khola section in central Nepal (Ulak et al., this volume). Analyses are reported for the Bankas (n=21), Chor Khola (n=62), Surai Khola (n=41), Dobata (n = 32) and Dhan Khola Formations (n=20), in ascending stratigraphic order. Normalization of average sandstone and mudstone from each formation against average upper continental crust (UCC) shows Na and Sr are strongly depleted relative to UCC, whereas several immobile elements (e.g. Zr, Th, Sc, Ti) are slightly enriched. However, fractionation between sandstone and mudstone within each formation is limited, particularly in the upper part of the section, and in comparison to the Bakiya Khola section in central Nepal. This suggests that some lateral geochemical variation exists within the Siwalik succession. This aspect will be the subject of future work.
掲載誌名
島根大学地球資源環境学研究報告
27
開始ページ
53
終了ページ
60
ISSN
13439774
発行日
2008-12-25
NCID
AA11455176
DOI(SelfDOI)
出版者
島根大学総合理工学部地球資源環境学教室
出版者別表記
Department of Geoscience, Interdisciplinary Faculty of Science and Engineering, Shimane University
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
(旧組織)大学院総合理工学研究科
備考
12-14,16+ / 1993+
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