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ファイル
言語
日本語
著者
Hossain H.M.Zakir
Roser BarryPaul
内容記述(抄録等)
Whole-rock major and trace element X-ray fluorescence analyses are reported for 238 samples (115 sandstones, 123 mudrocks) from the Jaintia, Barail, Surma, Tipam, and Dupitila Groups of the Sylhet basin, Bangladesh, as part of a study of their provenance. The units examined range from Late Eocene to Plio-Pleistocene in age. The samples analyzed were taken from core material from four hydrocarbon exploration wells, and also from surface outcrop. Loss on ignition contents are generally low (< 6%), although occasional higher values occur. SiO_2 contents of the sandstones are usually greater than in the mudrocks, but formation averages of both lithotypes exceed that of average upper continental crust (UCC). Average abundances of Pb, Zr, Th, Ce and most ferromagnesian elements (Sc, Fe_2O_3, TiO_2, Ni, Cr, V) are also usually greater than in UCC. In contrast, average contents of CaO, Na_2O, and Sr are strongly depleted relative to UCC ; Nb, K_2O, Rb, MgO, Al_2O_3, and Ba show lesser and more variable depletion.
掲載誌名
島根大学地球資源環境学研究報告
25
開始ページ
49
終了ページ
59
ISSN
13439774
発行日
2006-12-27
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
業績ID
e14184
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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