Paleontology, paleobiogeography and paleoecology of Carolia-bearing beds from the Late Eocene rocks at Nile-Fayum Divide, Egypt

El-Shazly, Soheir H.; Abdel-Gawad, Gouda Ismail; Salama, Yasser; Sayed, Dina M.

doi:10.1016/j.jafrearsci.2016.09.033

Cited by 14 publications

(1 citation statement)

References 42 publications

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“…The absence of benthic assemblage 4b in Wadi Degla indicating an uplift phase that occurred after deposition of Qurn Formation which allowed the deposition of Maadi Formation in G Abu Shama rather than W. Degla. The Maadi Formation in the study area is poorly fossiliferous in planktic foraminifera but rich in Ostrea multicostata Deshayes and Carolia placunoides Cantraine, which tentatively assign Priabonian age (Sallam et al., 2015a, Sallam et al., 2015b; El-Shazly et al., 2016; Saber and Salama, 2017). On the other hand Gaziryina pulchella (Hantken) has been recorded within this assemblage and indicates upper Eocene age (Muftah and Boukhary, 2013).…”

Section: Resultsmentioning

confidence: 89%

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: Resultsmentioning

confidence: 89%

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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Palaeoecological and palaeobiogeographic implications of Middle‐Late Eocene ostracods from the Qattamiya area, North Eastern Desert, Egypt

Korin

Hassan

2021

Geological Journal

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In an attempt to define the palaeoecology and palaeobiogeography of the Middle‐Late Eocene rock units in the North Eastern Desert of Egypt, 121 rock samples of three representative localities, namely, Wadi Degla, Gebel Abu‐Shama, and Gebel Qattamiya sections were collected and investigated. Qualitative and quantitative analysis of ostracods associations and sedimentological data were used to identify three ostracod biozones; two acme zones (Cytherella tarabulusensis and Loxoconcha vetustopunctatella) of the Middle Eocene age and one assemblage zone (Xestoleberis subglobosa–Uromuellerina saidi) of Middle‐Late Eocene age, reflecting palaeoenvironments in the study area. The Cytherella tarabulusensis Zone, located at the bottom of all sections, is characterized by restricted shallow water, low dissolved oxygen, high salinity, and water depth below 100 m. The Loxoconcha vetustopunctatella Zone, located in Wadi Degla and Gebel Qattamiya sections, is characterized by shallow normal warm waters in the range of 20–50 m, whereas Xestoleberis subglobosa–Uromuellerina saidi Assemblage Zone, located in all studied sections, reflects restricted shallow water with a reduced dissolved oxygen condition palaeoenvironment. Palaeobiogeographically, the recorded ostracod assemblage exhibits similarities with those recorded in the Middle East and North and East Africa bioprovinces.

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Facies and stratigraphic architecture of “middle” Miocene carbonate succession at Al Jaghbūb Oasis, Northeastern Libya

Abdulsamad

Emhanna²,

Tawati

et al. 2021

Med. Geosc. Rev.

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Paleontology, paleobiogeography and paleoecology of Carolia-bearing beds from the Late Eocene rocks at Nile-Fayum Divide, Egypt

Cited by 14 publications

References 42 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

Palaeoecological and palaeobiogeographic implications of Middle‐Late Eocene ostracods from the Qattamiya area, North Eastern Desert, Egypt

Facies and stratigraphic architecture of “middle” Miocene carbonate succession at Al Jaghbūb Oasis, Northeastern Libya

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