African Journal of
Environmental Science and Technology

  • Abbreviation: Afr. J. Environ. Sci. Technol.
  • Language: English
  • ISSN: 1996-0786
  • DOI: 10.5897/AJEST
  • Start Year: 2007
  • Published Articles: 1047

Full Length Research Paper

Analysis of the deposit conditions of sedimentary series of fluvio-lacustrine and aeolian origin in the Djourab desert, in Northern Chad

MOUSSA Abderamane
  • MOUSSA Abderamane
  • Laboratory of Hydro-Geosciences and Reservoirs, Department of Geology and Paleontology, University of N’Djamena, N'Djamena, Chad.
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MAHAMAT NOUR Abdallah
  • MAHAMAT NOUR Abdallah
  • Laboratory of Hydro-Geosciences and Reservoirs, Department of Geology and Paleontology, University of N’Djamena, N'Djamena, Chad.
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ABDERAMANE Hamit
  • ABDERAMANE Hamit
  • Laboratory of Hydro-Geosciences and Reservoirs, Department of Geology and Paleontology, University of N’Djamena, N'Djamena, Chad.
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MACKAYE H. Taisso
  • MACKAYE H. Taisso
  • Laboratory of Hydro-Geosciences and Reservoirs, Department of Geology and Paleontology, University of N’Djamena, N'Djamena, Chad.
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LIKIUS Andossa
  • LIKIUS Andossa
  • Laboratory of Hydro-Geosciences and Reservoirs, Department of Geology and Paleontology, University of N’Djamena, N'Djamena, Chad.
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SCHUSTER Mathieu
  • SCHUSTER Mathieu
  • Institut de Physique du Globe de Strasbourg, Université de Strasbourg, EOST, 1 rue Blessig, 67084 Strasbourg Cedex, France.
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DURINGER Philippe
  • DURINGER Philippe
  • Institut de Physique du Globe de Strasbourg, Université de Strasbourg, EOST, 1 rue Blessig, 67084 Strasbourg Cedex, France.
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GHIENNE Jean-François
  • GHIENNE Jean-François
  • Institut de Physique du Globe de Strasbourg, Université de Strasbourg, EOST, 1 rue Blessig, 67084 Strasbourg Cedex, France.
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VIGNAUD Patrick
  • VIGNAUD Patrick
  • Laboratoire Paléontologie Evolution Paléoécosystèmes Paléoprimatologie, Université de Poitiers, Poitiers, France.
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  •  Received: 06 July 2021
  •  Accepted: 20 October 2021
  •  Published: 30 November 2021

Abstract

The detailed sedimentary study of the deposit sequences of the ancient hominid sector (SahelanthropustchadensisalisToumaï) of Toros-Menalla, presented here addresses new aspects of the sedimentary geology of the Chad Basin through an original field study of Moi-sediments: Pliocene of the northern basin of CHAD. This is an original contribution that sheds light on new knowledge of sedimentary series of fluvio-lacustrine and aeolian origin in the Djourab desert which are essential for understanding the paleoenvironments and paleoclimates of Chad, the Sahara and Africa. Aged from the Terminal Miocene to the present day, these deposits which constitute the last stages of the filling of this basin are exclusively of the continental type and concern in the broad sense the following four major sedimentary systems: Fluvial, deltaic, lacustrine and aeolian. From a lithological point of view, these sedimentary series are very heterogeneous and include sandstones, sands, clays and diatomites.

 

Key words: Sedimentary deposit, Djourab, Toros-Menalla, Chad, fluvio-lacustrine, Aeolian.