Mesozoic - Tertiary palynomorphs and planktonic foraminifera of the subsurface section of the Sindy-1 well, eastern Nile Delta, Egypt
El Beialy, Salah Y.; Ayyad, Salah N.; Kholeif, Suzan E.
published: Jul 2, 1990
ArtNo. ESP026002202007, Price: 29.00 €
The present paper deals with the stratigraphic distribution of palynomorphs and planktonic foraminifera in the Late Jurassic to Middle Eocene succession penetrated by the Sindy-1 well, eastern Nile Delta, Egypt. Six informal zones based primarily on pollen and spores and ranging in age from Kimmeridgian to Cenomanian are recognised. Two planktonic foraminiferal zones can be distinguished in the Late Cretaceous (Maastrichtian) and the Middle Eocene (Lutetian). The Maastrichtian beds overly unconformably the Cenomanian sediments. The proposed palynological zonal subdivision is found to be applicable throughout the southern part of the Nile Delta, northern part of the Western Desert and in Sinai. A correlation with other zonations in and outside the study area is presented. The basal part of the studied sequence (Jurassic-Neocomian) exhibits moist habitat of a warm climate and nearshore conditions. The middle part of the sequence (Barremian-Aptian) suggests an arid climate with slight marine incursion upwards. The Albian-Cenomanian sediments contained weakly sculptured tricolpate and tricolporate pollen of a predominantly wind - pollinated vegetation. Correlation with coeval palynofloral assemblages in west and north Africa as well as south and north America reveals that the Sindy microfloras belong to the pre-Albian West African/South American (WASA) and Middle Cretaceous African/South American (ASA) microfloral provinces.