Tectonostratigraphic evolution of the eastern Algerian margin and basin from seismic data and onshore-offshore correlation

Arab, Mohamed; Rabineau, Marina; Déverchère, Jacques; Bracène, Rabah; Belhai, Djelloul; Roure, François; Marok, Abbas; Bouyahiaoui, Boualem; Granjeon, Didier; Andriessen, P.A.M.; Sage, Françoise

doi:10.1016/j.marpetgeo.2016.08.021

Cited by 37 publications

(61 citation statements)

References 53 publications

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“…It was firstly recognized on Kabylie basement through the deposition of the syn-rift "Oligo-Miocene Kabyle" dated from Late Oligocene to Burdigalian (Aïte and Gélard, 1997;Géry et al, 1981). These ages of rifting agree with seismic interpretations by Leprêtre et al (2013) and Arab et al (2016) for areas along the Algerian margin where tilted blocks are preserved. Recent seismic studies in the West Alboran Basin have also evidenced this large-scale extensional event.…”

Section: Extensional Deformation In Alkapeca Far Effects In the Foresupporting

confidence: 86%

“…If correct, it should represent the inception of a new slab reversal after the one occurring at 35 Ma after the closure of the western Ligurian Tethys. The age of this tectonic inversion of the Algerian margin is suggested by Arab et al (2016) to have initiated as soon as the Late Tortonian. We show below that this is consistent with the generalized resumption of compression at the scale of the northern Maghreb and even in South Spain at this age.…”

Section: The Late Tortonian-pliocene-to-present (R) Evolutionmentioning

confidence: 96%

“…11). The Oligocene-Early Miocene event either fossilized or reworked in extension many of the former compressional structures (among others, see for the Pyrenees: Fillon and van der Beek, 2012; Vergés and García-Senz, 2001; for the Catalan Range: Roca, 1994; for the Baleares: Etheve et al, 2016;Roca, 1994; for AlKaPeCa: Aïte and Gélard, 1997;Arab et al, 2016;Caby et al, 2001;Comas et al, 1999;Heymes et al, 2008Heymes et al, , 2010Rossetti et al, 2004Rossetti et al, , 2010Saadallah and Caby, 1996; for the Atlas belt: Bracène and Frizon de Lamotte, 2002;Ghandriche, 1991;Khomsi et al, 2016;Muratet, 1991;Torbi and Gélard, 1994). …”

Section: The Oligocene-miocene Reorganizationmentioning

confidence: 99%

“…This timing suggests that both the exhumation of the EMM and the development of wedge-top basins are related to the westward translation of the Alboran domain. The general compressional N-S stresses resumed in the Late Tortonian-Messinian in Morocco, and Plio-Quaternary times in Algeria (among others: Arab et al, 2016;Déverchère et al, 2005). …”

Section: Relationships Between the Emm And Wedge-top Neogene Basinsmentioning

confidence: 99%

“…12-14). After the counter-clockwise rotation of the Corsica-Sardinia that opened the LiguroProvençal Basin, the Algerian Basin resulted from the dislocation of the Alboran-Kabylie following N-S to NW-SE trends (Arab et al, 2016;Booth-Rea et al, 2007;Leprêtre et al, 2013;Mauffret et al, 2004 and references therein).…”

Section: Extensional Deformation In Alkapeca Far Effects In the Forementioning

confidence: 99%

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The Tell-Rif orogenic system (Morocco, Algeria, Tunisia) and the structural heritage of the southern Tethys margin

Leprêtre

Lamotte

Combier

et al. 2018

BSGF - Earth Sci. Bull.

100

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-The Tell-Rif (Tell in Algeria and Tunisia; Rif in Morocco) is the orogenic system fringing to the south the West Mediterranean basins. This system comprises three major tectonic-palaeogeographic zones from north to south: (1) the internal zones (AlKaPeCa for Alboran, Kabylies, Peloritan, Calabria) originating from the former northern European margin of the Maghrebian Tethys, (2) the "Flyschs zone" regarded as the former cover of the oceanic domain and (3) the external zones, forming the former southern Maghrebian Tethys margin more or less inverted. The Tell-Rif is interpreted as the direct result of the progressive closure of the Maghrebian Tethys until the collision between AlKaPeCa and Africa and, subsequently, the propagation of the deformation within Africa. This gives a consistent explanation for the offshore Neogene geodynamics and most authors share this simple scenario. Nevertheless, the current geodynamic models do not completely integrate the Tell-Rif geology. Based on the analysis of surface and sub-surface data, we propose a reappraisal of its present-day geometry in terms of geodynamic evolution. We highlight its non-cylindrical nature resulting from both the Mesozoic inheritance and the conditions of the tectonic inversion. During the Early Jurassic, we emphasize the development of NE-SW basins preceding the establishment of an E-W transform corridor connecting the Central Atlantic Ocean with the Ligurian Tethys. The Maghrebian Tethys developed just after, as the result of the Late Jurassic-Early Cretaceous left-lateral spreading between Africa and Iberia. By the Late Cretaceous, the occurrence of several tectonic events is related to the progressive convergence convergence between the two continents. A major pre-Oligocene (pre-35 Ma) compressional event is recorded in the Tell-Rif system. The existence of HP-LT metamorphic rocks associated with fragments of mantle in the External Metamorphic Massifs of the Eastern Rif and Western Tell shows that, at that time, the western part of the North-African margin was involved in a subduction below a deep basin belonging to the Maghrebian Tethys. At the same time, the closure of the West Ligurian Tethys through east-verging subduction led to a shift of the subduction, which jumped to the other side of AlKaPeCa involving both East Ligurian and Maghrebian Tethys. Slab rollback led to the development of the Oligo-Miocene back-arc basins of the West-Mediterranean, reworking the previous West Ligurian Tethys suture. The docking of AlKaPeCa against Africa occurred during the Late Burdigalian (17 Ma). Subsequently, the slab tearing triggered westward and eastward lateral movements that are responsible for the formation of the Gibraltar and Tyrrhenian Arcs respectively. The exhumation of the External Metamorphic Massifs occurred through tectonic underplating during the westward translation of the Alboran Domain. It resulted in the formation of both foredeep and wedge-top basins younger and younger westward. The lack of these elements in the eastern part ...

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Section: Extensional Deformation In Alkapeca Far Effects In the Foresupporting

confidence: 86%

Section: The Late Tortonian-pliocene-to-present (R) Evolutionmentioning

confidence: 96%

Section: The Oligocene-miocene Reorganizationmentioning

confidence: 99%

Section: Relationships Between the Emm And Wedge-top Neogene Basinsmentioning

confidence: 99%

Section: Extensional Deformation In Alkapeca Far Effects In the Forementioning

confidence: 99%

See 3 more Smart Citations

The Tell-Rif orogenic system (Morocco, Algeria, Tunisia) and the structural heritage of the southern Tethys margin

Leprêtre

Lamotte

Combier

et al. 2018

BSGF - Earth Sci. Bull.

100

View full text Add to dashboard Cite

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Back-arc dynamics controlled by slab rollback and tearing: a reappraisal of seafloor spreading and kinematic evolution of the Eastern Algerian basin (western Mediterranean) in Middle-Late Miocene

Haidar

Déverchère

Graindorge

et al. 2021

Preprint

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In spite of clear fan-shaped magnetic anomalies in the Eastern Algerian Basin (EAB), the way how and the time when seafloor spreading occurred are still debated. In this work, a new seismo-stratigraphic interpretation based on deep-penetration reflection seismic data correlated to reduced-to-the-pole magnetic anomalies and to onshore-offshore litho-stratigraphic correlation of Pre-Messinian units bring new constraints on its age and mode of opening. Our results reveal that the seafloor spreading of EAB occurred with a intermediate to fast half-spreading rate of 3.7±0.5 cm/yr during 2.45±0.18 Myr in Langhian-Serravalian times, i.e. after the Corsica-Sardinia block rotation and the collision of Lesser Kabylia with Africa. We revise the kinematics of the Algero-Balearic domain into three stages: (1) birth of a highly stretched continental basin accommodating the southern drift of the Kabylies driven by Tethyan slab rollback between ˜23 and ˜15 Ma, (2) fast opening of a new basin (EAB) between 15.2 and 12.7 Ma by clockwise rotation of a Greater Alboran Block (GALB), and (3) continuation of westward translation of the GALB. The last stages match both the late formation of Subduction-Transform Edge Propagator (STEP) faults at the toes of the Algero-Balearic margins and the post-collisional volcanic migration along the Algerian margin interpreted as related to slab break-off. This new scheme invalidates most previous opening models of the Algero-Balearic basin and favors a significant stretching and splitting of the GALB into several continental fragments resulting from the westward propagation of the arcuate subduction front by lateral tearing of a narrow slab.

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Tethyan and Alpine Controls on the Crustal Architecture of the Tunisian and Algerian Atlas and Tell: Needs for Coupled Deep Seismic Soundings and Tomography

Roure

Khomsi

Lamotte

et al. 2018

The Structural Geology Contribution to the Africa-Eurasia Geology: Basement and Reservoir Structure, Ore Mineralisation and Tec

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Tectonostratigraphic evolution of the eastern Algerian margin and basin from seismic data and onshore-offshore correlation

Cited by 37 publications

References 53 publications

The Tell-Rif orogenic system (Morocco, Algeria, Tunisia) and the structural heritage of the southern Tethys margin

The Tell-Rif orogenic system (Morocco, Algeria, Tunisia) and the structural heritage of the southern Tethys margin

Back-arc dynamics controlled by slab rollback and tearing: a reappraisal of seafloor spreading and kinematic evolution of the Eastern Algerian basin (western Mediterranean) in Middle-Late Miocene

Tethyan and Alpine Controls on the Crustal Architecture of the Tunisian and Algerian Atlas and Tell: Needs for Coupled Deep Seismic Soundings and Tomography

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