Austrian Journal of Earth Sciences Vienna 2018 Volume 111/1 135 - 154 DOI: 10.17738/ajes.2018.0009 Palynology of the Cenomanian Raha Formation, Gulf of Suez, Egypt: Biostratigraphical, palaeoenvironmental and palaeobiogeographical implications Omar MOHAMED1)*), Ahmed MANSOUR1), Sameh S. TAHOUN2), Ashraf M. T. ELEWA1) & Muhammad Ali MEKKEY3) 1) Geology Department, Faculty of Science, Minia University, P.O. Box 61519, Minia, Egypt; 2) Geology Department, Faculty of Science, Cairo University, P.O. Box 12613, Giza, Egypt; 3) West Bakr Petroleum Company, P.O. Box 546 Cairo-code No. 11371, Nasr City, Cairo, Egypt; *) Corresponding author:
[email protected] KEYWORDS Cenomanian; palynostratigraphy; palaeoenvironment; palaeobiogeography; palynofacies; Gulf of Suez Abstract The current study presents a fully qualitative palynological investigation carried out on the Raha Formation encountered from three wells in the Bakr Oil Field of the Gulf of Suez, Egypt. Around 30 species of pteridophytic spores, 26 species of an- giosperm pollen, 24 species of gymnosperm pollen and 27 species of dinoflagellate cysts have been recorded. However, achritarchs, microforaminiferal test linings and freshwater algae are impoverished and sparsely documented through- out the Raha Formation. Two palynozones have been identified based on some stratigraphically significant pollen and spores, arranged from youngest to oldest: (1) Palynozone I (Classopollis brasiliensis–Tricolpites sagax Assemblage Zone) of late Cenomanian age; (2) Palynozone II (Afropollis jardinus–Crybelosporites pannuceus Assemblage Zone) of early-middle Cenomanian age. The distribution and ecological affiliation of specific palynomorph species, as well as various palyno- facies parameters, are interpreted. A shallow marine environment from supratidal to distal inner neritic under proximal suboxic–anoxic to dysoxic–anoxic shelf conditions is reconstructed.