Foraminiferal palaeobathymetry and depositional sequences of the subsurface Eocene Apollonia Formation in North Western Desert, Egypt

Farouk, Sherif; Ismail, Abdelmoneim; El-Rauf, Ibtsam Abd; Tawfik, Mohamed

doi:10.1007/s12549-017-0312-1

Cited by 9 publications

(3 citation statements)

References 60 publications

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“…(2006) recorded that, the LO of Hantkenina dumblei Weinzierl and Applin is high in the E9 Zone. Farouk et al. (2018) confirmed the same conclusion in the Eocene Apollonia Formation at the North Western Desert .…”

Section: Resultssupporting

confidence: 83%

Contribution to the biostratigraphy of the Middle-Upper Eocene rock units at North Eastern Desert; an integrated micropaleontological approach

Hassan

Korin

2019

Heliyon

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Foraminifera and calcareous nannofossils have been integrated to improve the biostratigraphy of the Middle-Upper Eocene rocks at North Eastern Desert. Biostratigraphic analysis has enabled the identification of three planktic biozones, Globigerinatheka kugleri / Morozovella aragonensis (E9), Morozovelloides crassatus (E13) and Turorotalia cerroazulensis pomeroli/T. cerr. cerroazulensis . Meanwhile, the occurrence of calcareous nannofossils Reticulofenestra dictyoda , Pontosphaera multipora and Reticulofenestra umbilica within Morozovelloides crassatus Zone (E13) were attributed to Discoaster saipanensis Zone (NP17). Furthermore the quantitative analysis of small benthic foraminifera suggests four benthic assemblages (abundance zones) which correlated with their equivalents in the study area and neighboring areas. Therefore, a Middle Lutetian age (∼45.8 Ma) is proposed for Observatory Formation which dated back to the Bartonian. While, the Qurn Formation is assigned to late Bartonian-early Priabonian age with paraconformity (∼3.6 Ma) between the Observatory and Qurn formations as the result of tectonic instability at the late of Lutetian age. All of the recorded planktic species discontinue at the upper Eocene Maadi Formation of Priabonian age where the environment turned more shallowing inconsistent with planktic habitat. The Lutetian/Bartonian and Bartonian/Priabonian stage bounderies have been also discussed.

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Section: Resultssupporting

confidence: 83%

Contribution to the biostratigraphy of the Middle-Upper Eocene rock units at North Eastern Desert; an integrated micropaleontological approach

Hassan

Korin

2019

Heliyon

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“…Two most widely significant regional unconformities occur between the Khoman/Apollonia Formational boundary as a result of tectonic rising, which caused the missing of around 200 m (roughly 656 ft), while the second erosion event occurred near the top of the Dabaa Formation, which has an eroded thickness of 400 m (1312 ft) (Abdel‐Fattah et al, 2017; Farouk et al, 2018; Tawfik, Ondrak, et al, 2022; Tawfik, Winterleitner, & Mutti, 2022) (Table 3). Other erosion surfaces are lower in thickness and result from faulting in A/R ‘E’, A/R ‘G’ and Upper Bahariya.…”

Section: Resultsmentioning

confidence: 99%

Geochemical evaluation and basin modelling of the Cretaceous succession in the Azhar Oil field, West Beni Suef Basin, Egypt

Farouk,

Saada,

Fagelnour

et al. 2024

Geological Journal

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Geochemical analysis was performed on the Cretaceous sequence of the Azhar‐A‐2 well in the West Beni Suef Basin (WBSB), Western Desert, Egypt, utilizing data on total organic carbon (TOC), kerogen composition, vitrinite reflectance (Ro%) and Rock‐Eval pyrolysis. In addition, a 1D basin model was built to investigate the burial and temperature history of the study area. The most important Cretaceous source rocks are predominantly reported within the Albian Kharita Formation and Late Cenomanian‐Santonian Abu Roash (AR) Formation. Based on visual kerogen tests and Rock‐Eval pyrolysis, AR Formation (A, E, F, and G) are mixed oil‐ and gas‐prone source rocks with kerogens ranging from type II to type III, where A/R ‘A and F’ Members show dominant oil‐prone kerogen with the highest generative potential, while A/R ‘E and G’ Members are more gas‐prone kerogen. Most samples of the lower Kh Formation were interpreted as gas‐prone kerogen type III with low generative potential. On the other hand, the high amount of liptinite in the visual kerogen macerals is a strong indicator that the lower Petroleum Formation is an oil‐prone rather than gas‐prone source rock. The thermal maturity of the studied members increases consistently with depth, ranging from immature at the top of the AR Formation to the main/peak oil window at the base of the Lower Kharita Formation, which served as an active source rock for the hydrocarbons generated in the WBSB. The high value of the heat flow in the Beni Suef Basin (57 and 60 mW/m2) is a good indicator for the shallowing of the active source rock depth limit depth. From the study of the basin modeling, the main mature zone reached between 9811 and 11,090 ft in the middle of the Late Cretaceous (84.3–82.5 Ma) is through the L. Kharita Formation with three phases of hydrocarbon generation according to transformation ratio, where the second phase is the main stage in which TR is 5%–50%, showing the beginning of oil expulsion (Ro: 0.73%–0.78%, possibly 0.81%).

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“…The Paleo water depth (PWD) was estimated based on the interpreted depositional environments of different rock units from previous sedimentological and paleontological studies (e.g. El Beialy et al, 2011;Salem and Sehim, 2017;Tahoun et al, 2017;Farouk et al, 2018;Shehata et al, 2018aShehata et al, , 2019Ibrahim et al, 2020;Mahfouz et al, 2020). The Sediment-Water Interface Temperature (SWIT) was calculated using the global mean temperature at sea level for latitudes of 28° and 29°, Northern Africa, based on Wygrala (1989).…”

Section: Basin Modeling 431 Input Data and Boundary Conditionsmentioning

confidence: 99%

Source rock evaluation and petroleum system modeling of the East Beni Suef Basin, north Eastern Desert, Egypt

Tawfik

Ondrak

Winterleitner

et al. 2022

Journal of African Earth Sciences

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Foraminiferal palaeobathymetry and depositional sequences of the subsurface Eocene Apollonia Formation in North Western Desert, Egypt

Cited by 9 publications

References 60 publications

Contribution to the biostratigraphy of the Middle-Upper Eocene rock units at North Eastern Desert; an integrated micropaleontological approach

Contribution to the biostratigraphy of the Middle-Upper Eocene rock units at North Eastern Desert; an integrated micropaleontological approach

Geochemical evaluation and basin modelling of the Cretaceous succession in the Azhar Oil field, West Beni Suef Basin, Egypt

Source rock evaluation and petroleum system modeling of the East Beni Suef Basin, north Eastern Desert, Egypt

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