Bio- and Sequence Stratigraphy of Upper Cretaceous – Palaeogene rocks, East Bahariya Concession, Western Desert, Egypt

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Mohamed Mahsoub
Radwan Abulnasr
Mohamed Boukhary
Mahmoud Faris
Mohamed Abd El Aal


This work deals with the plankton stratigraphy of the subsurface Upper Cretaceous-Palaeogene succession of theEast Bahariya Concession based on planktonic foraminifera and calcareous nannofossils. The examination of the cuttings from five wells: AQSA-1X, KARMA-E-1X, KARMA-3X, KARMA-NW-1X and KARMA-NW-5X is biostratigraphically evaluated. It is possible to identify the planktonic foraminifera as well as the calcareous nannofossil biozones. The analyses of calcareous nannofossils revealed the presence of several hiatuses. Information obtained from well data such as seismic facies analysis for the studied area has enabled classification of the Upper Cretaceous Palaeogene succession into five major 2nd order depositional sequences, separated by four major depositional sequence boundaries (SB1, SB2, SB3 and SB4). The Upper Cretaceous-Palaeogene succession in the East Bahariya is dividedinto 17 systems tracts. These systems tracts are: 7 System tracts of probable Cenomanian age, (the sequence stratigraphic framework as well as the cycles and system tracts of the Cenomanian Bahariya Formation match well with thoseof CATUNEANUet al., 2006); 4 System tracts of Turonianage, 2 System tracts of Campanian-Maastrichtian ageand 4 System tracts of Eocene age.


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Original Scientific Papers
Author Biographies

Mohamed Mahsoub, Ain Shams University, Cairo, Egypt

Deparment of biological and Geological sciences

Radwan Abulnasr, Ain Shams University, Cairo, Egypt

Deparment of biological and Geological sciences

Mohamed Boukhary, Ain Shams University, Cairo, Egypt

Department of Geology 

Mahmoud Faris, Tanta University, Tanta, Egypt

Department of Geology

Mohamed Abd El Aal, Ain Shams University, Cairo, Egypt

Deparment of biological and Geological sciences


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