Bulletin of Engineering Geology and the Environment

, Volume 78, Issue 7, pp 5409–5429 | Cite as

Effects of diagenesis on the geomechanical and petrophysical aspects of the Jurassic Bir El-Maghara and Masajid carbonates in Gebel El-Maghara, North Sinai, Egypt

  • Bassem S. NabawyEmail author
  • Ahmed Abd El Aal
Original Paper


In the present study, the Jurassic Bir El-Maghara and Masajid Formations in North Sinai are subjected to a detailed microfacies analysis to identify the effect of the diagenetic factors on their geomechanical and petrophysical properties. The Bir El-Maghara Formation consists of mudstone microfacies, whereas the Masajid Formation consists of foraminiferal and molluscan mudstone microfacies, oolitic grainstone microfacies, mudstone microfacies, and foraminiferal-algal sparitic mudstone microfacies. These microfacies were deposited in restricted platform conditions through the entire section with some oscillations into shelf lagoon conditions in the middle parts of the sequence. The porosity and bulk density of Masajid and Bir El-Maghara Formations are strongly correlated with their petrophysical and geomechanical properties. These correlation relationships can help estimate the geomechanical properties statistically in terms of the petrophysical parameters.


Petrophysical Geomechanical Diagenetic factors Gebel El-Maghara Masajid Sinai 



The authors would like to thank Prof. Dr. Martin Culshaw, where his assistance in editing the manuscript is highly appreciated. The authors also thank the reviewers for their constructive and serious recommendations and comments.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Geophysical SciencesNational Research CentreCairoEgypt
  2. 2.Geology Department, Faculty of ScienceAl Azhar UniversityAssiutEgypt
  3. 3.Civil Engineering Department, Faculty of EngineeringNajran UniversityNajranSaudi Arabia

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