Comparison of the Dakhla Formation source rock potential between Komombo Basin and Gebel Duwi, Upper Egypt

  • Moamen AliEmail author
  • Mohamed Darwish
  • Mahmoud A. Essa
  • Ahmed Abdelhady
Original Paper


The Campanian-Maastrichtian Dakhla Formation consists mainly of dark gray, laminated shale with siltstone and sandstone inter-beds containing highly organic matter and is a potential source rock. The main objectives of the present research are to correlate the geochemical characteristics of the Dakhla Formation east and west of the River Nile in Upper Egypt and to discuss the main reasons for their variations. Fifty-nine samples were collected from the Komombo Basin and examined along with 230 published ditch and core samples from Gebel Duwi. These data indicate that the quality of the Dakhla source rock potentially varies from fair to good in the Komombo Basin with TOC 0.46–2.66 wt.% and good to excellent in Gebel Duwi with TOC of 2.1–14 wt.%. Additionally, the Dakhla Formation kerogen is type III and type I/II kerogen in the Komombo Basin and Gebel Duwi, respectively; the organic matter of the Dakhla Formation in the Komombo Basin is mostly of terrigenous origin, while in Gebel Duwi, it is mostly of marine origin. Based on vitrinite reflectance (%Ro) and Tmax values, the analyzed samples of Dakhla source rock are in the immature to early mature stage for oil and gas generation in both areas where the Tmax values have a range of 422–444 °C in the Komombo Basin and 412–435 °C in the Gebel Duwi area, while %Ro values range from 0.43 to 0.78% in the Komombo Basin.


Komombo Gebel Duwi Dakhla Formation Source rock potential Upper Egypt 



The authors would like to acknowledge GANOPE Company for providing us with their geochemical and well data and for giving us approval to publish our manuscript. The authors are grateful to Prof. Dr. Ezzat Abdullah and Dr. Amr Said for the fruitful discussions that have led to a better understanding of many points. We would also like to thank and Mr. Mohammad Makram (Assistant Lecturer at Assiut University), Ms. Nada Nabil (Commercial Project Manager, Nature Research Group, Springer Nature), Egyptian Knowledge Bank (EKB), and Eileen H. (Senior Editor, Springer Nature Author Services) for editing the manuscript for English language usage, grammar, spelling, and punctuation by one or more native English-speaking editors at Nature Research Editing Service. The authors also acknowledge the Editor-in-Chief, Dr. Abdullah Al-Amri, Associate Editor Dr. Katz, and anonymous reviewers, whose comments and suggestions have helped to significantly improve our article.


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Copyright information

© Saudi Society for Geosciences 2019

Authors and Affiliations

  1. 1.Geology DepartmentAssiut UniversityAssiutEgypt
  2. 2.Geology DepartmentCairo UniversityCairoEgypt
  3. 3.DEA CompanyCairoEgypt

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