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Sedimentary Structure Interpretation, Grain Size Analysis, and Stochastic Modeling of P2O5 Grades of Kef Essennoun Phosphorite Deposit (Northeast Algeria): Implication for Paleogeographic Setting and Paleoprocesses

  • Mohamed DassamiourEmail author
  • Hamid Mezghache
  • Otmane Raji
  • Jean-Louis Bodinier
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The Kef Essennoun phosphorite (northeast Algeria) is a layer with an average thickness of 35 m, dipping 10–15° southwards and bounded to the west by the Ain Fouris shoal. On the outcrop, the deposit shows internal layering forming large-scale, high-angle cross bedding. In order to investigate the phosphorite depositional and paleogeographic settings, grain size analysis and Sequential Gaussian Simulation of P2O5 content from 29 drill holes were carried out. Grain size analysis reveals the transport and reworking of phosphates by paleocurrents. The simulation indicates the elongation of the phosphate formation in the direction N63°, parallel to the Ain Fouris shoal. These results are consistent with sedimentological and oceanographic processes involving transport and migration of phosphates as a submarine dune, as well as interaction of the paleocurrents carrying phosphates with the Ain Fouris shoal.

Keywords

Grain size analysis Sequential gaussian simulation Phosphorite deposition Submarine dune Ain Fouris shoal 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Mohamed Dassamiour
    • 1
    Email author
  • Hamid Mezghache
    • 2
  • Otmane Raji
    • 3
  • Jean-Louis Bodinier
    • 3
    • 4
  1. 1.Department of Earth Sciences, Institute of Architecture and GeosciencesFerhat Abbas Setif 1 UniversitySetifAlgeria
  2. 2.Department of Geology, Faculty of Earth SciencesBadji Mokhtar - Annaba UniversityAnnabaAlgeria
  3. 3.Geology and Sustainable MiningMohammed VI Polytechnic UniversityBenguerirMorocco
  4. 4.Géosciences MontpellierUniversité de MontpellierMontpellierFrance

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