Study of a Neogene basin dynamics: The “Bizerte basin”, northeastern Tunisia: relevance to the global Messinian Salinity Crisis

Harrab, Salah; Mannaï-Tayech, Beya; Rabhi, Mohsen; Zargouni, Fouad

doi:10.1016/j.crte.2013.01.007

Cited by 14 publications

(2 citation statements)

References 38 publications

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“…In figure 1.c, modified after Lofi (2018), the pink dots represent the PLG units that were correlated at the Mediterranean scale (Karakitsios et al, 2017;Orszag-Sperber et al, 2009). In addition, numerous gypsum deposits have been (Hsü et al, 1978a;Hsü et al, 1978b, c;Hsü et al, 1978d;Kastens et al, 1987;Lugli et al, 2015) and gypsum from Albania (Pashko et al, 2019), Algeria (Rouchy et al, 2007), Adriatic foredeep (Manzi et al, 2020), Balearic Promontory , Calabria (Costanzo et al, 2019) in Italy, Cyprus (Robertson et al, 1995;Rouchy and Monty, 1981), Egypt (Aref, 2003;, Israel (Cohen, 1993;Raab et al, 1997), Tunisia (El Euch-El Koundi et al, 2009Harrab et al, 2013;Sghari, 2012), Turkey (Boulton et al, 2016;Tekin et al, 2010) and Syria (Hardenberg and Robertson, 2007;Rouchy et al, 2007).…”

Section: Figure 1cmentioning

confidence: 99%

Cryptic sulfur cycling during the formation of giant gypsum deposits

Guibourdenche

Cartigny

Pierre

et al. 2022

Earth and Planetary Science Letters

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Section: Figure 1cmentioning

confidence: 99%

Cryptic sulfur cycling during the formation of giant gypsum deposits

Guibourdenche

Cartigny

Pierre

et al. 2022

Earth and Planetary Science Letters

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“…FIGURE 13(A) Stratigraphy summary(Khelil et al, 2021) of the outcropping series from Triassic to recent and (B) detailed lithostratigraphic Column(Harrab et al, 2013) of Miocene to actual deposits and their depositional environment.…”

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confidence: 99%

Flood mapping of the lower Mejerda Valley (Tunisia) using Sentinel-1 SAR: geological and geomorphological controls on flood hazard

Khemiri,

Katlane,

Khelil

et al. 2024

Front. Earth Sci.

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Understanding the influence of the hydrological regime changes, encompassing both the duration and spatial extent of floods, is explored, through this paper, in the context of the complex interactions of the geological, geomorphological and climate change conditions. Integrating these parameters and their combined influence becomes paramount for effective flood risk management and disaster prevention, as highlighted in the broader context of the study’s conclusions. Over the past decade, despite prevailing drought conditions in North African countries, the Mejerda Valley in Tunisia has experienced several major flood events. The valley geomorphological history is presented, within the landscape evolution. This study explores the use of Sentinel-1 radar data for detecting and managing floods in the region, with a particular emphasis on the vulnerability of the Lower Mejerda Valley. Sentinel-1 radar data, owing to their continuous monitoring capabilities independent of weather conditions, prove highly effective in tracking the temporal evolution of floods and accurately mapping the extent of affected areas. The methodology utilized in this study has proven to be highly effective in accurately identifying areas susceptible to flooding, both spatially and temporally. In generating classified flood images, water objects are highlighted by applying a specific formula. The study delves into significant flood events in the Mejerda Valley, including occurrences in 2015, 2017, 2019, and 2020, examining their profound impacts on various regions. For instance, the floods of 2015 recorded precipitation levels reaching up to 141 mm, contributing to the overall understanding of flood evolution in the region. In conclusion, the Mejerda Delta’s relief is primarily due to tectonism, influencing both Mio-Pliocene and Quaternary processes, shaping the current delta configuration. The Valley’s topography results from extensive geomorphological evolution, with the eastward shoreline advance leading to the formation of sebkhas and lagoons, indicators of high flood risk, supported by detailed flood event analysis. Moreover, The climate change and anthropic activity are non-negligible parameters influencing flood occurrence and intensity.

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Tectonomagmatic Context of Sedex Pb–Zn and Polymetallic Ore Deposits of the Nappe Zone Northern Tunisia, and Comparisons with MVT Deposits in the Region

Decrée

Marignac

Abidi

et al. 2016

Mineral Deposits of North Africa

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The Nefza region (Nappe Zone, northern Tunisia) is known both as a Late Miocene magmatic province and a base-metal district. In this region, small, post-nappe, continental extensional basins (Sidi Driss and (Sedex). In addition to this mineralization, the Nappe zone contains other Pb-Zn and polymetallic deposits that show similarities both to the SHMS-Sedex and MVT deposits of the Dome and Graben zones, namely the "peri-diapiric" deposits of Jebel (Jb) el Hamra, Jalta, and Jebel Ghozlane. All of the Nappe Zone deposits share common characteristics, including: (1) age-the deposits formed between late collisional events (Late Tortonian) and inception of the Early Messinian extensional regime, in the context of the Alpine Maghrebide belt formation; (2) presence of pre-existing sulphates-these were likely the main source of sulphur for the sulphides; and (3) hydrothermal systems leading to their genesisthese testify to alternating influx of cold and warm fluids. The involvement of high temperature fluids are deduced from fluid inclusion studies (Th values of 140-240°C), whereas the presence of distinctive sphalerite textures (microspherules and colloform textures) and sulphur isotopic compositions demonstrate in situ bacterial sulphate reduction, and consequently deposition at temperatures below 80°C. These data constitute unifying characteristics for these mineralizations that are in contrast to the features of Pb-Zn(-fluorite) MVT deposits occurring in the Dome and Graben zones of Tunisia. The geodynamic context prevailing during the Late Miocene in the Nappe Zone is the underlying common factor that explains the diversity of ore deposits formed at that time in this region. Most deposits are located in the vicinity of shear zones and associated lineaments inherited from the Variscan orogeny. These deep structures were reactivated by transtensional processes during the Alpine orogeny and controlled post-collisional magmatism, circulation of hydrothermal fluids, and locations of related ore deposits and showings in the Nappe Zone.

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Study of a Neogene basin dynamics: The “Bizerte basin”, northeastern Tunisia: relevance to the global Messinian Salinity Crisis

Abstract: Study of a Neogene basin dynamics: The ''Bizerte basin'', northeastern Tunisia: relevance to the global Messinian Salinity Crisis E ´tude de la dynamique d'un bassin ne´oge`ne : le bassin de Bizerte,

Cited by 14 publications

References 38 publications

Cryptic sulfur cycling during the formation of giant gypsum deposits

Cryptic sulfur cycling during the formation of giant gypsum deposits

Flood mapping of the lower Mejerda Valley (Tunisia) using Sentinel-1 SAR: geological and geomorphological controls on flood hazard

Tectonomagmatic Context of Sedex Pb–Zn and Polymetallic Ore Deposits of the Nappe Zone Northern Tunisia, and Comparisons with MVT Deposits in the Region

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