The evolution of the River Nile. The buried saline rift lakes in Sudan—I. Bahr El Arab Rift, the Sudd buried saline lake

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Abstract

The River Nile in Sudan, was during the Tertiary, a series of closed lake basins. Each basin occupying one of the major Sudanese rift systems (Salama, 1985a). In this paper evidence is presented for the presence of the buried saline Sudd Lake in Bahr El Arab rift. The thick Tertiary sediments filling the deep grabens were eroded from the elevated blocks; Jebel Marra, Darfur Dome, Nuba Mountains and the Nile-Congo Divide. The thick carbonate deposits existing at the faulted boundaries of Bahr El Arab defines the possible boundaries between the fresh and saline water bodies. The widespread presence of kanker nodules in the sediments was a result of continuous efflorescence, leaching and evaporative processes. The highly saline zone in the central part of the Sudd was formed through the same processes with additional sulphate being added by the oxidation of the hydrogen sulphide gases emanating from the oil fields.

References (39)

  • L. Berry

    Large scale alluvial islands in the White Nile

    Revue Géomorph. dyn.

    (1962)
  • L. Berry et al.

    The Nile in the Sudan

    Geogr. J.

    (1968)
  • D.L. Deardoerff et al.

    Wyoming tarona deposits

    Wyoming Univ. Contr. Geol.

    (1972)
  • H.P. Eugester

    Chemistry and origin of the brines of lake Magadi, Kenya

    Mineral. Soc. Amer. Spec. Paper

    (1970)
  • R.M. Garrels et al.

    Origin of the chemical composition of some springs and lakes

    Adv. Chem. Ser. Amer. Chem. Soc. Monogr.

    (1967)
  • F. Gasse

    Evolution of lake Abhe (Ethiopia and TFAI), from 70,000 B.P.

    Nature

    (1977)
  • F. Gasse et al.

    Quarternary history of the Afar and Ethiopian rift lakes

  • R.H. Gunn

    The plains of the Central Sudan

  • L.A. Hardie et al.

    The evolution of closed basin brines

    Mineral. Soc. Amer. Spec. Paper

    (1970)
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