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379175

Benthic foraminiferal paleobathymetry and paleoenvironments of late Maastrichtian–early Eocene sequence in Wadi Tarfa, north Eastern Desert, Egypt

Article

Last updated: 28 Dec 2024

Subjects

-

Tags

Sedimentology, Stratigraphy, Paleontology, Geochronology.

Abstract

In order to study the biostratigraphy and decipher the paleoenvironmental conditions of the Maastrichtian–Paleogene successions, 75 samples were collected from exposed section in Wadi Tarfa, Galala Sub-basin, north Eastern Desert of Egypt. The samples have been analyzed for a benthic foraminiferal content. Five lithostratigraphic units are recognized in the study area in an ascending order: Sudr, Dakhla, Tarawan, Esna and Thebes formations. Fourteen zones and six subzones of planktonic foraminifera are recorded. Detailed quantitative analysis revealed 225 benthic foraminiferal species belonging to 88 different genera. Angulogavelinella avnimelechi, Neoflabellina jarvisi, Gavelinella beccariiformis, Bolivina midwayensis, Pullenia coryelli, Cibicidoides alleni, Verneuilina aegyptiaca, and Gyroidinoides globosus became extinct at the P/E boundary. The depositional environments ranged from middle neritic to bathyal (∼150–300 m deep) during deposition of the Maastrichtian–early Eocene sequence. Midway-type fauna, with mixed infaunal and epifaunal morphogroups, were recorded. The calculation of foraminiferal indices and cluster analysis provide a strong proxy for paleoenvironmental conditions and sea-level changes across the Maastrichtian–early Eocene interval.

DOI

10.21608/egjg.2024.299747.1082

Keywords

Benthic foraminifera, Paleoenvironment, Maastrichtian–early Eocene sequence, Wadi Tarfa, Egypt

Authors

First Name

Saida

Last Name

Taha

MiddleName

Ali Ahmed

Affiliation

Petroleum Geology Department, Faculty of Petroleum and Mining Science, Matrouh University, Marsa Matrouh, 51512, Egypt

Email

geosaidataha@gmail.com

City

-

Orcid

-

First Name

Mohamed

Last Name

Ali

MiddleName

Youssef

Affiliation

Geology Department, Faculty of Science, South Valley University

Email

myousefgeology@gmail.com

City

Qena

Orcid

0000-0001-6465-6293

Volume

68

Article Issue

1

Related Issue

45415

Issue Date

2024-12-01

Receive Date

2024-08-10

Publish Date

2024-12-01

Page Start

289

Page End

307

Print ISSN

0022-1384

Online ISSN

2805-2617

Link

https://egjg.journals.ekb.eg/article_379175.html

Detail API

https://egjg.journals.ekb.eg/service?article_code=379175

Order

17

Type

Original Article

Type Code

2,013

Publication Type

Journal

Publication Title

Egyptian Journal of Geology

Publication Link

https://egjg.journals.ekb.eg/

MainTitle

Benthic foraminiferal paleobathymetry and paleoenvironments of late Maastrichtian–early Eocene sequence in Wadi Tarfa, north Eastern Desert, Egypt

Details

Type

Article

Created At

28 Dec 2024