Assiut University Egypt
Prof. Dr. Abdalla Mousa Tolba Ibrahim El Ayyat is an eminent Egyptian geologist and Professor of Sedimentary Rocks and Stratigraphy at the Geology Department, Faculty of Science, Assiut University, Egypt. Born on July 18, 1961, in El Minia, Egypt, he has devoted his career to the detailed study of sedimentary basins, stratigraphic sequences, and carbonate formations, especially in Egypt’s desert and Nile Valley regions. With over four decades in academia and research, Prof. El Ayyat is known for his deep commitment to geological education, stratigraphic frameworks, and regional paleoenvironmental reconstruction.
Profile
Google Scholar
🎓 Education
Prof. El Ayyat began his academic journey with a B.Sc. in Special Geology (Distinction) from Assiut University in 1983. He earned his M.Sc. in Sedimentology and Stratigraphy in 1989, focusing on Lower Eocene carbonates in Upper Egypt. He completed his Ph.D. in 1998, where he studied the stratigraphic and sedimentological evolution of the Eocene sequence between Minia and Beni Suef. His academic training has laid a strong foundation for a prolific career in stratigraphy and sedimentary research.
🧪 Professional Experience
Starting as a demonstrator in 1983, Prof. El Ayyat progressed through roles of assistant lecturer, guest researcher, and lecturer at Assiut University and abroad. He gained international exposure at the Technical University of Munich (Germany) and Vienna University (Austria) through prestigious scholarships. He was promoted to Professor in 2017 and later served as Head of the Geology Department from 2019 to 2021. Since 2021, he holds the title of Emeritus Professor, continuing to inspire students and researchers through mentorship and academic leadership.
🔬 Research Interests
Prof. El Ayyat’s research interests center around sedimentology, stratigraphy, and basin analysis, particularly of Cretaceous and Eocene formations in Egypt. He has contributed significantly to understanding depositional environments, diagenetic processes, and the paleoecological significance of fossil assemblages. His work integrates lithostratigraphy, biostratigraphy, facies analysis, and clay mineralogy to reconstruct geologic history and sea-level fluctuations in North Africa.
🏅 Awards & Recognitions
Prof. El Ayyat has been recognized by academic institutions and scientific conferences for his outstanding contributions to geology, including international collaborations and conference presentations. His leadership roles and research scholarships in Austria and Germany further highlight his international stature. He has also played key roles in organizing and participating in regional and international geology conferences, fostering knowledge exchange in Earth Sciences.
📚 Publications Top Notes:
Prof. El Ayyat has authored and co-authored numerous peer-reviewed publications in high-impact journals. Below is a selection of his notable works, including links (where available), year, and citation status:
Keheila, E.A., Soliman, H.A. & El Ayyat, A.M. (1990)
Litho-and biostratigraphy of the Lower Eocene carbonate sequence in Upper Egypt
Journal of African Earth Sciences, Vol. 11(1/2), pp. 151-168.
🔗 ScienceDirect
📑 Cited by 40+ articles.
Keheila, E.A. & El Ayyat, A.M. (1990)
Lower Eocene carbonate facies and sedimentary cycles in Upper Egypt
Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 81, pp. 33-47.
🔗 Elsevier
📑 Cited by 50+ articles.
El Ayyat, A.M. (2013)
Sedimentology, sequential analysis and clay mineralogy of the Lower Eocene sequence, Farafra Oasis
Journal of African Earth Sciences, Vol. 78, pp. 28–50.
🔗 ScienceDirect
📑 Cited by 60+ articles.
El Ayyat, A.M. & Kassab, A.S. (2004)
Biostratinomy and depositional history of the Upper Cretaceous Duwi Formation
Journal of African Earth Sciences, Vol. 39, pp. 421–428.
🔗 ScienceDirect
📑 Cited by 30+ articles.
El Ayyat, A.M. (2004)
Lithostratigraphy, facies analysis and diagenetic features of the Middle Eocene carbonates northeast of Minia
Bulletin of Faculty of Science, Assiut University, Vol. 33(2), pp. 95–124.
📑 Referenced in multiple theses and geological mapping projects.
Stratigraphy, sedimentology and tectonic evolution of the Upper Cretaceous/Paleogene succession in north Eastern Desert, Egypt
Biostratinomy and facies analysis of the upper Cretaceous oyster storm shell beds of the Duwi formation, Qusseir District, Red Sea Region, Egypt
Lithostratigraphy, sedimentology, and cyclicity of the Duwi Formation (late Cretaceous) at Abu Tartur plateau, Western Desert of Egypt: evidences for reworking and redeposition
Biostratigraphical and sedimentological studies on the upper cretaceous/paleogene sequence, Western desert, Egypt