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Paleoenvironmental Evolution of the Lagoon of Mahres (Gulf of Gabes, Tunisia) Based on Its Ostracod and Benthic Foraminifera Associations
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Author(s): Soumaya Ben Rouina (University of Sfax, Tunisia), Rimeh Zarai (University of Gabes, Tunisia)and Jamel Touir (University of Sfax, Tunisia)
Copyright: 2024
Pages: 18
Source title:
Palynology and Human Ecology of Africa
Source Author(s)/Editor(s): Emuobosa Akpor Orijemie (Department of Archaeology and Anthropology, University of Ibadan, Nigeria)and Sylvester Onoriode Obigba (Palynology Laboratory, Department of Archaeology and Anthropology, University of Ibadan, Nigeria)
DOI: 10.4018/978-1-6684-7801-1.ch010
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Abstract
This chapter is devoted to the reconstruction of the palaeoenvironment of the Mahres lagoon (gulf of Gabes, Tunisia). Two primary proxies have been the most studied during the last decade: sedimentary criteria and microfossils. In this study (core ‘‘Mh''), we used a microfossil-based proxy (ostracods and foraminifers) and Granulometric analysis. The results reveal the succession of three extreme events episodes (Units: U1, U3 and U5) characterized by very high-energy hydrodynamics possibly linked to the occurrence of major storms. These units are marked by an increase in coarse sediments and an increase in coastal marine ostracods made up of Neocytheredeis fasciata, Pontocythere elongata, Semicytherura incongruens and benthic foraminifera including Sorites orbiculus, Peneroplis perstus, Rosalina bradyi, Rosalinna. Macropora, Valvularina bradyana and Planorbulina mediterranensis.
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