Salt tectonics and its effect on the structural and sedimentary evolution of the Jeffara Basin, Southern Tunisia

Rabia, Aicha El; Inoubli, Mohamed Hédi; Ouaja, Mohamed; Abidi, Oussama; Sebei, Kawthar; Jlailia, Ali

doi:10.1016/j.tecto.2018.07.015

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…This process creates a density inversion, and over time the less dense and buoyant salt layers may pierce through the overlying rocks. The ascent of the diapir is also driven by differential loading of the overburden and regional tectonics (Chapman 1983;Harding and Huuse 2015;Jackson and Hudec 2017;El Rabia et al 2018). For buoyancy alone to cause the upward migration of the diapir, the clastic overburden has to be buried to at least 1600 m, but more commonly to 3000 m (Jackson and Hudec 2017).…”

Section: Introductionmentioning

confidence: 99%

Use of Geophysical and Radar Interferometric Techniques to Monitor Land Deformation Associated with the Jazan Salt Diapir, Jazan city, Saudi Arabia

et al. 2021

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Using integrated Interferometric Synthetic Aperture Radar (InSAR) datasets (Envisat: 2003–2009; Sentinel-1: 2014–2018), local gravity surveys, and passive seismic data, we investigated the environmental hazards associated with the rise of the Miocene Jazan salt diapir (JZD; ~ 2 km2) within Jazan city, Saudi Arabia, and identified areas at risk in its immediate surroundings. Our findings include (1) the JZD outcrop and its northern, southern and western bordering areas have been undergoing substantial uplift (up to 4.7 mm/yr), whereas the sabkhas to the east are witnessing subsidence (up to − 7.5 mm/yr); (2) a low Bouguer anomaly (7.5 mGal) was observed over the JZD relative to its surroundings (8.5–12 mGal) with the steepest gradient along its eastern side; (3) strong and clear horizontal/vertical (H/V) spectral ratio peak and high frequency (5–10 Hz) over the JZD outcrop and areas proximal to its western margin, but areas to the east have a weak H/V peak and low frequency (1.5-3 Hz); (4) drilling confirmed presence of a shallow (4 m) salt bedrock layer west of the JZD and the absence of this layer to its east (up to depths of 60 m); (5) uplift patterns along the diapir margins are indicative of near-vertical contact along the JZD eastern margin and less steep contacts along the remaining margins; and (6) additional near-surface diapirs could potentially be identified in the vicinity of the JZD using our integrated approach.

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Section: Introductionmentioning

confidence: 99%

Use of Geophysical and Radar Interferometric Techniques to Monitor Land Deformation Associated with the Jazan Salt Diapir, Jazan city, Saudi Arabia

et al. 2021

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“…However, we propose that in the study area, it was mainly controlled by eustacy(Jaillard et al 2013;Ben Chaabane et al 2019), although tectonic uplift may have locally played a role. Farther Southeast however, the coeval sedimentary hiatus encompasses a much longer time span, and contains deformation of latest Aptian to middle Albian times(Jaillard et al 2013), thus giving the impression of a single deformation occurring around the Aptian-Albian boundary (e.g Lazzez et al 2008;El Rabia et al 2018…”

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confidence: 99%

Sequences, discontinuities and water stratification in a low-energy ramp: the Early Albian sedimentation in central Tunisia

Jaillard

Chihaoui

Latil³

et al. 2020

Int J Earth Sci (Geol Rundsch)

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Based on a precise biostratigraphic framework stated previously, the detailed sedimentological study of eight sections of the early Albian succession of Central Tunisia made possible to refine the modalities of the Albian transgression and the related behavior of sedimentary system on the Tunisian margin. Major early Albian transgressive pulses occurred (i) at the base of the L. tardefurcata standard ammonite zone, (ii) around the top of the same zone, (iii) during the D. mammillatum standard zone, and (iv) near the top of the latter ammonite zone. They resulted in the progressive flooding of the Tunisian margin emergent since the Aptian boundary, in the disappearance of emergence evidences through time, in the southward backstepping of the carbonate shelf facies, and eventually in the homogeneization of the outer shelf marly sedimentation in the study area. The low energy of deposition of the early Albian sediments in this part of the South-Tethyan margin may be due to the deflection of winds and storms by the Coriolis forces toward the North-Tethyan margin, creating a clockwise gyre in this part of the ocean. This circulation may have enhanced upwelling currents likely responsible for phosphate mineralization, and for the oxygen depletion of deep waters, which progressively invaded the Tunisian margin, giving way to organic-rich deposits of late early Albian age. The early Albian sedimentation is then interrupted by a major hiatus of middle Albian to early late Albian age.

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Petroleum System Evaluation of Upper Cretaceous and Eocene Plays, Offshore and Onshore Southern Pelagian Basin, Tunisia

Göttlich¹,

Rodríguez

Mnii

et al. 2023

Regional Geology Reviews

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Salt tectonics and its effect on the structural and sedimentary evolution of the Jeffara Basin, Southern Tunisia

Cited by 11 publications

References 25 publications

Use of Geophysical and Radar Interferometric Techniques to Monitor Land Deformation Associated with the Jazan Salt Diapir, Jazan city, Saudi Arabia

Use of Geophysical and Radar Interferometric Techniques to Monitor Land Deformation Associated with the Jazan Salt Diapir, Jazan city, Saudi Arabia

Sequences, discontinuities and water stratification in a low-energy ramp: the Early Albian sedimentation in central Tunisia

Petroleum System Evaluation of Upper Cretaceous and Eocene Plays, Offshore and Onshore Southern Pelagian Basin, Tunisia

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