The Oligo-Miocene siliciclastic foreland basin deposits of northern Tunisia:Stratigraphy, sedimentology and paleogeography. (October 2020)

• Record Type: Journal Article
• Authors: Boukhalfa, Kamel; Soussi, Mohamed; Ozcan, Ercan; Banerjee, Santanu; Tounekti, Abdelbasset
• Is Part Of: Journal of African earth sciences. Volume 170(2020)
• Publication Date: 2020-10
• Subjects: Stratigraphy -- Sedimentology -- Paleogeography -- Flexural sub-basin -- Oligo-miocene -- Northern Tunisia -- Peri-tethys; Earth sciences -- Africa -- Periodicals; Earth sciences -- Middle East -- Periodicals; Geology -- Africa -- Periodicals; Geology -- Middle East -- Periodicals; Sciences de la terre -- Afrique -- Périodiques; Sciences de la terre -- Moyen-Orient -- Périodiques; Géologie -- Afrique -- Périodiques; Géologie -- Moyen-Orient -- Périodiques; Earth sciences; Geology; Africa; Middle East; Periodicals; Electronic journals; 556.05
• DOI: 10.1016/j.jafrearsci.2020.103932
• Languages: English
• ISSNs: 1464-343X

Abstract

Abstract: This paper presents an integrated study aiming to assess the stratigraphy, sedimentology and paleogeography of the marine and non-marine Tellian, Bejaoua and Fortuna Oligo-Miocene deposits of northern Tunisia. The fossiliferous strata, particularly the glauconite-rich facies, bounded by major unconformities, refine the stratigraphic framework and address the spatio-temporal relationship between marine and non-marine deposits. Three new updated paleogeographic maps for the Oligocene (30-27 Ma) and the Miocene (21-20 Ma and 15 Ma) epochs, outlining the major transgressive and regressive events and the relationships between the Tellian and Atlasic basins have been produced. The genesis and evolution of the Oligo-Miocene foreland sub-basins of the Tellian, the salt domes zone and the northern Atlas are reconstructed considering the geodynamic events that accompanied the African-Eurasian convergence, besides eustasy and climate. Highlights: The Oligo-Miocene siliciclastic succession of northern Tunisia has been revised based on ancient and new acquired biostratigraphic data. New lithostratigraphic scheme outlines the spatio-temporal distribution of the continental and marine facies of the Tellian and Atlasic domains. Transgressive events versus glauconitic events.