Neotectonics of coastal Jeffara (southern Tunisia): State of the art

Ghedhoui, Rim; Deffontaines, Benoı̂t; Rabia, Mohamed Chedly

doi:10.1016/j.tecto.2015.11.032

Cited by 8 publications

(3 citation statements)

References 58 publications

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“…It is limited to the west by the Matmata and Dahar Mountains and to the east by the Mediterranean Sea. The geodynamic structure of the coastal Jeffara reveals ‘relay zones’ of a major north‐west/south‐east right‐lateral strike–slip transtensive fault that affected the Holocene and Villafrachian deposits (Ghedhoui et al ., 2016).…”

Section: Study Areamentioning

confidence: 99%

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Middle to late Holocene sedimentary filling history of the Sebkha el Melah in south‐eastern Tunisia

et al. 2022

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The sedimentological and geochemical properties of a 146 cm long sediment core collected from Sebkha el Melah (Ml core) in south‐eastern Tunisia have been used to infer the genesis and evolution of the Sebkha el Melah over the last 5000 years. Two main sedimentary units have been defined: a huntite [Mg3Ca(CO3)4] unit at the bottom of core Ml is covered by a second unit made up of siliciclastic and evaporitic materials. The huntite level is synchronous with Holocene marine transgression, which was followed by a regression of about 5300 years bp. Geochemical data (major and trace element), magnetic analyses, grain‐size distribution and microtexture of quartz grains were performed to assess the sediment provenance. The upper unit of Ml core is characterized by alternations between fluvial, aeolian and evaporite deposits. Redox proxies displaying marked Fe/Ca and Rb/S peaks, in addition to high magnetic susceptibility (MS) values, polymodal grain‐size frequency curves, as well as sub‐angular grains with V‐shaped percussion cracks, are suggestive of palaeohydrological events. In contrast, a decreasing trend in the low MS values, bi‐modal grain‐size frequency curves as well as well‐rounded quartz grains with crescent percussion marks would indicate enhanced aeolian sand input in the sebkah el Melah sequence. Moreover, geochemical proxies suggest formation of evaporite facies under a strongly warm climate contemporary with marine intrusion.

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Section: Study Areamentioning

confidence: 99%

“…(B) From Ghedhoui et al . (2016): Geography of the studied area (N315°E SRTM DEM hill‐shading base map) (1. Sebkhas; 2.…”

Section: Introductionmentioning

confidence: 99%

Middle to late Holocene sedimentary filling history of the Sebkha el Melah in south‐eastern Tunisia

et al. 2022

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“…The Tunisian Atlas, an eastward extension of the Maghrebide chain (Figure 1A) [2][3][4][5][6], had long recorded a polyphase tectono-sedimentary evolution of the North African margin [1,[7][8][9]. Since the initial breakup of the Pangea to the Tethys and Mesogean rifting periods [10,11] and through the collision events that continue [12,13], the basins evolution recorded tectono-sedimentary systems with complex facies and structures. Geological work that has targeted the Tunisian margin has shown that this complexity is mainly due to a direct interaction between the brittle tectonics, materialized by the different network of faults, and the sedimentation [7,[14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

New Insights into Geodynamic Evolution of the South-Eastern Termination of the Tunisian Atlas during Early Cretaceous Period from Surface and Subsurface Data: Hydrogeological Implications

Ben Chelbi

2024

Formation and Evolution of Earth's Crust

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The Menzel Habib Plain (MHP), the easternmost part of the Southern Tunisian Atlas, exhibits a thick siliciclastic and carbonate succession developed in the Early Cretaceous period. Integration of seismic and gravimetric data coupled with analysis of the syndepositional faults affecting these units proves that the MHP is governed, during this period, by a N-S to NE-SW extensive tectonics induced by the sinistral drifting of Africa with respect to Europe and the beginning of opening of the Eastern Mediterranean Sea. The geodynamic evolution of the MHP is mainly due to the jerky normal activities of the N-S, NW-SE, NE-SW and E-W oriented faults. During extensive period these network of faults architects the sedimentary floor into succession of horst and grabens inducing formation of E-W to NW-SE basins. Seismic lines show that the actual architecture of the MHP obtained after Tertiary tectonic inversion, is that of succession of large synclines separated by narrow anticlines. Porous and permeable unites forming these deep structures host very developed aquifers characterizing the sub soil of MHP and were totally different to the surrounding aquifers of the southern Tunisian margin.

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Mapping of seismic parameters of the Iberian Peninsula by means of a geographic information system

Amaro-Mellado

Morales‐Esteban

Martínez‐Álvarez

2017

Cent Eur J Oper Res

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Neotectonics of coastal Jeffara (southern Tunisia): State of the art

Cited by 8 publications

References 58 publications

Middle to late Holocene sedimentary filling history of the Sebkha el Melah in south‐eastern Tunisia

Middle to late Holocene sedimentary filling history of the Sebkha el Melah in south‐eastern Tunisia

New Insights into Geodynamic Evolution of the South-Eastern Termination of the Tunisian Atlas during Early Cretaceous Period from Surface and Subsurface Data: Hydrogeological Implications

Mapping of seismic parameters of the Iberian Peninsula by means of a geographic information system

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