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Articles originaux

Two Tyrrhenian transgressive cycles in coastal deposits of the Cap Bon Peninsula, Tunisia

Deux cycles transgressifs tyrrhéniens dans les dépôts côtiers de la péninsule du Cap Bon, Tunisie
Amel Chakroun, Dalila Zaghbib-Turki, Jean-Claude Miskovsky and Eric Davaud
p. 215-226

Abstracts

A sedimentological and fauna analysis of Quaternary deposits at two sites located on the south-eastern littoral of the Cap Bon peninsula (Tunisia) provides new details about sea-level changes. Two shallowing-upward sequences separated by an erosion surface occur above the present sea level at several locations along the south-eastern shoreline of Cap Bon peninsula. Each sequence has a distinctive sedimentology and fauna content. The older one is especially rich in quartz grains and lithic fragments and is associated with shallow marine fauna in the lower member which would indicate a high relative sea level. The younger sequence is dominated by carbonates such as pellets, oolithes and mollusk fragments. The fauna of its lower marine member is rich in “Senegalian fauna” such as the Strombus bubonius LAMARCK. This biomarker, revealed at other locations in Tunisia (e.g., Sahel region, Jorf and Jerba Island) and at many sites around the Mediterranean Basin (Spain, France, Italy, Greece, Lebanon, and Egypt), indicates warm sea water. Both units include paleosols, colluviums and dunal members indicating respectively a wet phase followed by a drier phase. The vertebrate fauna discovered in the dunal deposits of the carbonate unit provides more information on the development of a savannah occurring with trees in the Cap Bon land at the post-Tyrrhenian.

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References

Bibliographical reference

Amel Chakroun, Dalila Zaghbib-Turki, Jean-Claude Miskovsky and Eric Davaud, Two Tyrrhenian transgressive cycles in coastal deposits of the Cap Bon Peninsula, TunisiaQuaternaire, vol. 20/2 | 2009, 215-226.

Electronic reference

Amel Chakroun, Dalila Zaghbib-Turki, Jean-Claude Miskovsky and Eric Davaud, Two Tyrrhenian transgressive cycles in coastal deposits of the Cap Bon Peninsula, TunisiaQuaternaire [Online], vol. 20/2 | 2009, Online since 01 June 2012, connection on 28 March 2024. URL: http://journals.openedition.org/quaternaire/5140; DOI: https://doi.org/10.4000/quaternaire.5140

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About the authors

Amel Chakroun

Faculté des Sciences de Tunis, Département de Géologie, Campus universitaire, 2092, Tunis El Manar II (Tunisia). Courriel : chakroun_amel@yahoo.fr

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Dalila Zaghbib-Turki

Faculté des Sciences de Tunis, Département de Géologie, Campus universitaire, 2092, Tunis El Manar II (Tunisia). Courriel : dalila.zaghbib@fst.rnu.tn

Jean-Claude Miskovsky

Centre Européen de Recherches Préhistoriques, UMR 6569 du CNRS, Avenue Léon Grégory, 66720, Tautavel (France). Courriel : jcmisko@tele2.fr

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Eric Davaud

Département de Géologie et de Paléontologie, 13, rue des Maraîchers, 1205, Genève (Switzerland). Courriel : eric.davaud@terre.unige.ch

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Copyright

The text and other elements (illustrations, imported files) are “All rights reserved”, unless otherwise stated.

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