Paleoecology of the middle Eocene ostracods of Egypt

Elewa, Ashraf M. T.; Abdelhady, Ahmed Awad

doi:10.1016/j.jafrearsci.2020.103780

Cited by 5 publications

(1 citation statement)

References 26 publications

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“…We determined the species abundance in each rock unit, and then we calculated their relative abundances for further multivariate statistical measures. F I G U R E 3 Stratigraphic correlation of the recorded rock units in the studied sections, the Top of Observatory Formation is taken as a general datum Elewa, 2004;Elewa & abdelhady, 2020;Elewa & Ishizaki, 1994;Hewaidy, Morsi, & Samir, 2020;Iwatani, Irizuki, & Goto, 2011). F I G U R E 7 A combining plot of both Q-and R-mode cluster analyses, Size of dots indicates relative abundance of ostracod species in samples Q-mode cluster analysis was performed to estimate the statistical similarity between the samples.…”

Section: Quantitative Analysismentioning

confidence: 99%

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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Section: Quantitative Analysismentioning

confidence: 99%