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Calcareous nannofossil biostratigraphy of the marine Oligocene and Miocene succession in some wells in Northern Egypt

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Abstract

Twelve calcareous nannofossil biozones of Late Oligocene-Late Miocene in Northern Egypt were defined and correlated with their corresponding biozones in Egypt and other parts of the world. These are arranged from the top to base as Zone NN12, Zone NN11, Zone NN10, Zone NN8, Zone NN7, Zone NN6 Zone NN5, NN4, Zone NN3, Zone NN2 Zone NP25 and Zone NP24. In the present study (Boughaz-1 Well), the Late Miocene unconformably overlies the Middle Miocene. This unconformity surface is recognized by the missing of calcareous nannofossil zones NN7 to NN9. While, in North Sinai (Malha-1 Well), the Early/Middle Miocene boundary cannot be recognized, where the Middle Miocene unconformably overlies the topmost Oligocene, and it is defined by the missing calcareous nannofossil zones NN1 to NN4.

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Acknowledgments

The manuscript is extracted from the PhD Thesis of the corresponding author. We would like to thanks for the Egyptian General Petroleum Corporation (EGPC) for giving us the cutting samples of the studies wells. Great thanks go to The Scientific and Technological Research Council of Turkey (TUBITAK) and Prof. Ercan Ozcan (Geological Engineering department, Faculty of Mine, Istanbul Technical University, Turkey) for supporting the corresponding author in Turkey during the research working part of her PhD Thesis. Additionally, the authors are much more grateful to the editor and the anonymous reviewers for their constructive comments, corrections and helpful suggestions which greatly improved the manuscript.

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  1. Department of Geology, Faculty of Science, Tanta University, Tanta, Egypt

    Mahmoud Faris

  2. Department of Geology, Faculty of Science, Benha University, Benha, 13518, Egypt

    Hassan El Sheikh & Fatma Shaker

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  1. Mahmoud Faris
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Correspondence to Fatma Shaker.

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Faris, M., El Sheikh, H. & Shaker, F. Calcareous nannofossil biostratigraphy of the marine Oligocene and Miocene succession in some wells in Northern Egypt. Arab J Geosci 9, 480 (2016). https://doi.org/10.1007/s12517-016-2445-3

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