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Thin-Bedded Turbidites of the Numidian Flysch, North Africa and Southern Europe

  • Dorrik StowEmail author
  • Sami Riahi
  • Bouabdellah Menzoul
  • Urval Patel
  • Bayonle Omoniyi
  • Melissa Johansson
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

The Numidian Flysch (Oligocene-Miocene) is a mud-rich deepwater system dominated by thin-bedded and very thin-bedded turbidites. Preliminary study of the equivalent series in Sicily, Tunisia, Algeria and southern Spain reveal a similar range of mud, silt and sand-rich facies in each locality. They are commonly associated with thick-bedded turbidites and the deepwater massive sandstone facies association. They were deposited by low-concentration turbidity currents in a slope setting which shows a general shallowing-upward trend. Attribute and sequence characteristics indicate deposition in channel-abandonment, channel-levee, open slope and lobe architectural elements, for which we infer a series of separate basins and input points along the 2000 km extent of the Numidian Flysch system. Intensive bioturbation in parts are indicative of the interbedded hemipelagites and, possibly, contourites, although evidence for interaction with along slope currents during closure of the Tethys Ocean is yet to be elucidated. While the sand-rich turbidites represent good potential for hydrocarbon reservoirs, any exploration must take the dominance of thin-bedded turbidites into account.

Keywords

Numidian flysch Thin-bedded turbidites Attribute indices Deepwater Continental slope 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Dorrik Stow
    • 1
    Email author
  • Sami Riahi
    • 2
  • Bouabdellah Menzoul
    • 3
  • Urval Patel
    • 4
  • Bayonle Omoniyi
    • 1
  • Melissa Johansson
    • 5
  1. 1.Heriot-Watt UniversityEdinburghScotland, UK
  2. 2.Faculté Des Sciences de TunisTunisTunisia
  3. 3.University of TlemcenTlemcenAlgeria
  4. 4.Heriot-Watt UniversityPutrajayaMalaysia
  5. 5.Geode EnergyCardiffUK

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