Late Cretaceous-Paleocene ostracods and foraminifera assemblages from the Fguira Salah section (Fahs region, northern Tunisia): Biostratigraphy and palaeogeography

The biostratigraphical study of planktic and benthic foraminifera, and ostracod assemblages in the Fguira Salah section (Fahs area, Zaghouan region, NE Tunisia) aims to determine the age of these series for the first time. The vertical distribution of the ostracod species allows to distinguish five...

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Bibliographic Details
Published inProceedings of the Geologists' Association Vol. 136; no. 4; p. 101094
Main Authors Amri, Ahlem, Ouchir, Nesrine, Alyahyaoui, Sofien
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2025
Subjects
Biostratigraphy
Foraminifera
Late Cretaceous
Ostracods
Palaeoenvironments
Paleocene
Tunisia
Palaeoenvironments
Paleocene
Foraminifera
Ostracods
Tunisia
Late Cretaceous
Biostratigraphy
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Summary:The biostratigraphical study of planktic and benthic foraminifera, and ostracod assemblages in the Fguira Salah section (Fahs area, Zaghouan region, NE Tunisia) aims to determine the age of these series for the first time. The vertical distribution of the ostracod species allows to distinguish five successive ostracod assemblages spanning the Santonian, Campanian and Paleocene intervals; with the Maastrichtian interval remaining unrecognised. These assemblages correspond to favourable environments for the ostracods diversity considering their adaptability to various environments. The studied assemblages that support the usefulness of ostracods are precious tools for biostratigraphical correlation and palaeoecological reconstructions. In the Fguira Salah section they contribute to highlighting particular palaeoecological factors, including changes in salinity, water depth, temperature, and hydrodynamism towards the whole palaeoenvironmental evolution in the region and its broader implications.
ISSN:0016-7878
DOI:10.1016/j.pgeola.2025.01.003