Palynostratigraphy, palynofacies, paleoenvironment and hydrocarbon potentiality of some subsurface jurassic to lower cretaceous successions from the North Western Desert, Egypt /
بالينوستيراتيجرافية و سحنات بالينولية و بيئة قديمة و الاحتمالات الهيدروكربونية لبعض التتابع التحت سطحى للجيوراسى و الكريتاسى السفلى بشمال الصحراء الغربية - مصر
Aya Raafat Ibrahim ; Supervised Nabil Mohamed Aboulela , Sameh Samir Tahoun
- Cairo : Aya Raafat Ibrahim Mahrous , 2021
- 228 P. : charts , facsimiles ; 25cm
Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Geology
The present palynological study of four wells (OBA D-17, OBA D-8, THAX-1 and OBA D-10) has been performed on 169 cutting samples covering the interval from Jurassic to Lower Cretaceous in the north Western Desert. This includes Ras Qattara, Yakout, Khatatba, Masajid and Alam El Bueib formations.This study yielded 91 species of 54 genera of palynomorphs (spores, gymnosperm, angiosperm pollen grains, dinoflagellate cysts, in addition to acritarchs, foraminiferal test linings and freshwater algae). From the quantitative and qualitative analyses of the studied interval, nine interval and assemblage dinoflagellate biozones are proposed, these are described as follows: I: Cribroperidinium edwardsii Interval Zone (Aptian), II: Tenua anaphrissa Interval Zone (middlelate Barremian), III: Muderongia simplex Interval Zone (late Hauterivianearly Barremian), IV: Systematophora sp. Acme Zone (Valanginianearly Hauterivian), V: Gonyaulacysta jurassica Interval Zone (late Oxfordian Kimmeridgian), VI: Ctenidodinium continuum Interval Zone (early Oxfordian), VII: Korystocysta gochtii Interval Zone (late Bathonian Callovian), VIII: Pareodinia ceratophora and Dissiliodinium sp. Assemblage Zone (late Bajocian early Bathonian) and IX: Mancodinium semitabulatum Interval Zone(Aalenian early Bajocian). As well as five equivalent sporomorph biozones: Murospora florida Interval zone (Aptian), Aequitriradites spinulosus Interval Zone (middle late Barremian), Pilosisporites verrusP. trichopapillosus Assemblage Zone (Valanginianearly Barremian), Callialasporites trilobatus Interval Zone (AalenianKimmeridgian) and Classopollis spp. Spheripollenites psilatus Assemblage Zone (ToarcianAalenian)