The evolution of pre-existing structures during the tectonic inversion process of the Atlas chain of Tunisia

Dhahri, Ferid; Boukadi, Noureddine

doi:10.1016/j.jafrearsci.2009.07.002

Cited by 56 publications

(18 citation statements)

References 19 publications

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“…The master normal faults trend E and ENE (Fig. 17) related to this long regional extensional event are associated with inherited NW-oriented normal faults that exhibit oblique slips (Bouaziz et al, 1999(Bouaziz et al, , 2002Rabhi, 1999;Bédir et al, 2001;Zouaghi et al, 2005a,b;Zouaghi, 2008;Dhahri and Boukadi, 2010;Melki et al, 2010). Genesis and evolution of the main structures was controlled a network of Aptian faults that trend NE,E,NW,and N (Figs.…”

Section: Cretaceous (Aptian) Structuresmentioning

confidence: 99%

“…1B) is characterized by east-, northwest-and northeast-trending fold belts verging to the south and bordered by strike-slip fault systems (e.g., Zargouni, 1985;Zouari et al, 1990;Boukadi, 1994;Bédir, 1995;Zitouni, 1997;Boutib and Zargouni, 1998;Bédir et al, 2001;Zouaghi et al, 2005a,b). The strike-slip fault systems correspond to deep faults that were active during the Cretaceous and Cenozoic (e.g., Burollet, 1956;Chihi, 1984;Harding, 1985Harding, , 1990Zargouni, 1985;Ben Ayed, 1993;Boukadi, 1994;Bédir, 1995;Zouaghi, 2008;Dhahri and Boukadi, 2010). These faults originate from pre-Triassic basement master faults (Jauzein and Perthuisot, 1981;Bédir, 1995;Chihi, 1995;Zouaghi et al, 2005a,b) that in places are associated with salt tectonic activity (e.g., Zouari, 1984;Ben Ayed, 1993;Vila and Charriere, 1993;Bédir, 1995;Boukadi and Bédir, 1996;Zitouni, 1997;Boukadi et al, 1998;Hlaiem, 1998;Ben Timzal, 2000;Bédir et al, 2000Bédir et al, , 2001Vila et al, 2001;Tanfous-Amri et al, 2005;Zouaghi et al, 2005aZouaghi et al, ,b, 2009Zouaghi, 2008;Rigane et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Cretaceous (Aptian) strata in central Tunisia, using 2D seismic data and well logs

Zouaghi

Ferhi

Bédir

et al. 2011

Journal of African Earth Sciences

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Section: Cretaceous (Aptian) Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Cretaceous (Aptian) strata in central Tunisia, using 2D seismic data and well logs

Zouaghi

Ferhi

Bédir

et al. 2011

Journal of African Earth Sciences

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“…This thickness decrease is due to the tectonic control amplified by halokinesis and ero sion as highlighted for the Abiod Formation to the northwest of the study area within the offshore well 1. The post Ypresian deposition records some compressional events especially above main normal faults in testimony of their Neogene inversion as occurred in the Northeastern Tunisia and the Pelagian province after the Africa-Europe convergence (Morgan et al 1992;Guiraud 1998;Piqué et al 1998;Brunet & Cloetingh 2003;Melki et al 2010;Dhahri & Boukadi 2010;Dhahri et al 2015). However, these deformations are sealed by an uppermost horizontal level Pliocene-Quaternary in age suggesting a low angle unconformity above the deformed zone (Fig.…”

Section: Structural Background and Hydrocarbon Potentialmentioning

confidence: 88%

“…The strata beneath the Gulf of Tunis constitute an off shore basin that developed during the Neogene Africa-Europe collision (Dart et al 1993;Lentini et al 1996;Catalano et al 2011). The geological history of this area is linked to the evolution of the North African margin guided by transten sional plate movements between Africa and Eurasia during the Mesozoic, followed by plate collision during the Neogene (Stampfli & Borel 2002;Brunet & Cloetingh 2003;Patriat et al 2003;Laville et al 2004;Abrajevitch et al 2005;Dhahri & Boukadi 2010;Melki et al 2010;Catalano et al 2011;Roure et al 2012;Masrouhi et al 2014;Dhahri et al 2015). The architecture of the Gulf of Tunis basin developed mainly during the Mesozoic, and then was greatly deformed during the Neogene leading to the inversion of extensional structures and to the redistribution of subsidence locations.…”

Section: Introductionmentioning

confidence: 99%

Tectonosedimentary framework of Upper Cretaceous –Neogene series in the Gulf of Tunis inferred from subsurface data: implications for petroleum exploration

Dhraief¹,

Dhahri²,

Chalwati³

et al. 2017

Geologica Carpathica

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Abstract:The objective and the main contribution of this issue are dedicated to using subsurface data to delineate a basin beneath the Gulf of Tunis and its neighbouring areas, and to investigate the potential of this area in terms of hydrocarbon resources. Available well data provided information about the subsurface geology beneath the Gulf of Tunis. 2D seismic data allowed delineation of the basin shape, strata geometries, and some potential promising subsurface structures in terms of hydrocarbon accumulation. Together with lithostratigraphic data obtained from drilled wells, seismic data permitted the construction of isochron and isobath maps of Upper Cretaceous-Neogene strata. Structural and litho stratigraphic interpretations indicate that the area is tectonically complex, and they highlight the tectonic control of strata deposition during the Cretaceous and Neogene. Tectonic activity related to the geodynamic evolution of the northern African margin appears to have been responsible for several thickness and facies variations, and to have played a significant role in the establishment and evolution of petroleum systems in northeastern Tunisia. As for petroleum systems in the basin, the Cretaceous series of the Bahloul, Mouelha and Fahdene formations are acknowledged to be the main source rocks. In addition, potential reservoirs (Fractured Abiod and Bou Dabbous carbonated formations) sealed by shaly and marly formations (Haria and Souar formations respectively) show favourable geometries of trap structures (anticlines, tilted blocks, unconformities, etc.) which make this area adequate for hydrocarbon accumulations.

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“…One of the clearest examples of tectonic reactivation is the nucleation of reverse fault from existing normal faults in continental margins, which is known as the process of positive tectonic inversion (Letouzey 1990). The inversion of deformational structures has been recognized in intracontinental domains (for example Ziegler 1983, Letouzey 1990, Charrier et al 2002, Cunningham 2005, 2013, in active continental margins, and in collisional environments (Ziegler 1983, Butler et al 2006, Dhahri & Boukadi 2010. This process is well recorded in sectors that undergo several superimposed subsidence pulses, in areas where compression has affected a stratigraphic pile deposited in an extensional environment or even in reverse shear zones that were reactivated as normal ones (negative inversion) (Allmendinger et al 1983, Jolivet et al 1991, Faccenna et al 1995.…”

Section: Introductionmentioning

confidence: 97%

Tectonic inversion of compressional structures in the Southern portion of the Paramirim Corridor, Bahia, Brazil

et al. 2015

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ABSTRACT:The Paramirim Corridor represents the maximum inversion zone of the Paramirim Aulacogen. Reverse-to-reverse dextral shear zones and various types of folds dominate such corridor. These structures reflect a stress field that is WSW-ENE oriented, developed in units of Aulacogen basement, as well as in the Lagoa Real Intrusive Suite, of Statherian age, in Espinhaço and São Francisco supergroups, of Statherian-Tonian and Cryogenian ages, respectively, and in the Macaúbas-Santo Onofre Group, of Tonian age at the most. A rich collection of extensional structures truncate compressional structures of the Paramirim Corridor, characterized by normal shear zones and foliation, which is sometimes mylonitic, down-dip stretching lineation, drag folds, traction fractures and S/C structures. In these shear zones, quartz occurs truncated by the foliation, while feldspars are fractured and altered to white mica. Distribution of the quartz c-axes is at a maximum of 14° from the Z-axis. Thus, it suggests that the deformation activated mainly the basal glide planes in the direction. The paleostress study using the Win-Tensor software demonstrated that the regimen ranged between radial and pure distention. The S 1 direction oscillated around a vertical trend, while s 3 was sub-horizontal, with a predominant N230-050° direction. Ar-Ar ages in biotite obtained from the extensional shear zones ranged from 480 and 490 Ma. Together, data obtained for the structures associated with the late extensional regimen described in the present study suggest that its nucleation is associated with distal and brittle-ductile sectors of the gravitational collapse zone of Araçuaí-West Congo Orogen.KEYWORDS: Shear Zone; Paramirim Corridor; Gravitational Collapse. RESUMO: O Corredor do Paramirim representa a zona de máxima inversão do Aulacógeno do Paramirim, no qual predominam zonas de cisalhamento reversas-reversas destrais e vários tipos de dobras. Essas estruturas refletem um campo de tensão segundo WSW-ENE, os quais se desenvolvem nas unidades de embasamento do Aulacógeno, assim como na Suíte Intrusiva Lagoa Real, de idade estateriana, nos supergrupos Espinhaço e São Francisco, de idades estateriana-toniana e criogeniana, respectivamente, bem como no grupo Macaúbas-Santo

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The evolution of pre-existing structures during the tectonic inversion process of the Atlas chain of Tunisia

Cited by 56 publications

References 19 publications

Analysis of Cretaceous (Aptian) strata in central Tunisia, using 2D seismic data and well logs

Analysis of Cretaceous (Aptian) strata in central Tunisia, using 2D seismic data and well logs

Tectonosedimentary framework of Upper Cretaceous –Neogene series in the Gulf of Tunis inferred from subsurface data: implications for petroleum exploration

Tectonic inversion of compressional structures in the Southern portion of the Paramirim Corridor, Bahia, Brazil

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