Benmoussa T., Amrouni O., Dezileau L., Mahé Gil, Chiarella D., Abdeljaouad S. (2019). Recent geochemical and grain size distribution of terrestrial sediment in coastal area from the watershed of Medjerda river, gulf of Tunis. In :
Boughdiri M. (ed.), Badenas B. (ed.), Selden P. (ed.), Jaillard Etienne (ed.), Bengtson P. (ed.), Granier B.R.C. (ed.). Paleobiodiversity and tectono-sedimentary records in the Mediterranean tethys and related eastern areas : proceedings of the 1st Springer Conference of the Arabian Journal of Geosciences (CAJG-1), Tunisia 2018. Cham : Springer, p. 347-351. (Advances in Science, Technology and Innovation). Conference of the Arabian Journal of Geosciences (CAJG-1), 1., Hammamet (TUN), 2018/11/12-15. ISBN 978-3-03-001451-3. ISSN 2522-8714.
Titre du document
Recent geochemical and grain size distribution of terrestrial sediment in coastal area from the watershed of Medjerda river, gulf of Tunis
Année de publication
2019
Auteurs
Benmoussa T., Amrouni O., Dezileau L., Mahé Gil, Chiarella D., Abdeljaouad S.
In
Boughdiri M. (ed.), Badenas B. (ed.), Selden P. (ed.), Jaillard Etienne (ed.), Bengtson P. (ed.), Granier B.R.C. (ed.) Paleobiodiversity and tectono-sedimentary records in the Mediterranean tethys and related eastern areas : proceedings of the 1st Springer Conference of the Arabian Journal of Geosciences (CAJG-1), Tunisia 2018
Source
Cham : Springer, 2019,
p. 347-351 (Advances in Science, Technology and Innovation). ISBN 978-3-03-001451-3 ISSN 2522-8714
Colloque
Conference of the Arabian Journal of Geosciences (CAJG-1), 1., Hammamet (TUN), 2018/11/12-15
The geochemical and grain size analysis were carried out on surface and down core sediments from the present-day alluvial-coastal plain of the Medjerda River, Gulf of Tunis, Tunisia. The aim of this paper is to characterize the geochemical and grain size distribution of sediments and its relationship with the hydrodynamics extreme events occurring during the last century. Using a multi proxy approach, six turbidities layers have been identified in down core sediment (i.e. TL-1, TL-2, TL-3, TL-4, TL-5, TL-6, TL-7 and TL-8) characterized by multimodal grain size distribution. The terrestrial sediment which feeds the northern coastal of the Gulf of Tunis is characterized by very fine-grained sediment (clay and silt). The geochemical signature shows a highly concentration of Rb, Ti, Zn and Pb. The Medjerda River is the mainly source of silts and clay sediment. Besides, the mining pollution (Zn and Pb) is relatively strong in the coastal area, especially during the great floods events of Medjerda watershed recorded in the 1953; 1957; 1969 and 1973. Even during high frequency events, the sediments are devoid of any coarse fraction.
Plan de classement
Transports solides et qualité physico-chimique des eaux [062MECEAU04]
;
Géochimie [064GEOCHI]
Descripteurs
SEDIMENT ; GEOCHIMIE ; GRANULOMETRIE ; ZONE COTIERE ; RELATION ; INONDATION ; TURBIDITE ; BASSIN VERSANT ; COURS D'EAU ; POLLUTION MINIERE
Description Géographique
TUNISIE
Localisation
Fonds IRD [F A010087809]
Identifiant IRD
fdi:010078604
