Indice de la compression recente en mer Mediterranee; un bassin losangique sur la marge nord-algerienne

Mauffret, A.; El-Robrini, Maâmar; Gennesseaux, M.

doi:10.2113/gssgfbull.iii.6.1195

Cited by 47 publications

(17 citation statements)

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“…The Khair al Din bank is an elongated high (500-m depth), previously roughly known (e.g., [38]), overhanging the deep basin as deep as 2700 m. On the eastern flank of the bank, the canyons are narrow, dense and straight, and look more like linear gullies. On its northwestern side, the slope break is striking N70°E and is very sharp.…”

Section: Algiers Zonementioning

confidence: 99%

“…Other debates concern the large massifs of Kabylies, which are assumed to have undergone either an early frontal, north-south ( [17,39] and references therein), or oblique, NW-SE [27,29] collision. Furthermore, large strike-slip zones [38] are believed to have segmented the Internal Zones and are supposed to extend offshore, but whether they are inherited from the palaeogeography of the northern palaeomargin of the Maghrebian Tethys [13] or whether they result from the development of a bookshelf faulting system in the Plio-Quaternary stress field [45], is unclear, due to the lack of accurate marine data.…”

Section: Geological Settingmentioning

confidence: 99%

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Searching for the Africa–Eurasia Miocene boundary offshore western Algeria (MARADJA'03 cruise)

Domzig¹,

Yelles²,

Roy³

et al. 2005

Comptes Rendus. Géoscience

102

147

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We present new results from the MARADJA'03 cruise depicting the geological structures offshore central and western Algeria. Using swath bathymetry and seismic reflection data, we map and discuss the offshore limits of the Internal Zones corresponding to relics of the AlKaPeCa domain that drifted and collided the African plate during the Miocene. We identify large reverse faults and folds that reactivate part of these limits and are still active today. The morphology of the westernmost NE-SW margin suggests a former strike-slip activity accommodating a westward block translation responsible for the shift of the Internal Zones towards the Moroccan Rif.Résumé: Nous présentons les résultats récents de la campagne MARADJA'03, qui visent à mettre en évidence les structures géologiques dans le domaine marin au nord-ouest de l'Algérie. Grâce aux données de bathymétrie multifaisceau et de sismique réflexion, nous cartographions et discutons les limites en mer des Zones internes correspondant aux reliques du domaine AlKaPeCa qui a dérivé, puis est entré en collision avec la plaque africaine au Miocène. De grandes failles inverses et plis, actifs dans le champ de contrainte actuel, réactivent certaines de ces limites. La marge ouestalgérienne, orientée NE¿SW, indique la présence d'une ancienne activité en décrochement ayant accommodé la translation des Zones internes vers l'ouest.

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Section: Algiers Zonementioning

confidence: 99%

Section: Geological Settingmentioning

confidence: 99%

Searching for the Africa–Eurasia Miocene boundary offshore western Algeria (MARADJA'03 cruise)

Domzig¹,

Yelles²,

Roy³

et al. 2005

Comptes Rendus. Géoscience

102

147

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“…Recent deep seismic surveys have outlined the complex architecture of the North Algerian offshore, which is still locally underlain by thinned continental crust, characterized by a layered lower crust and synrift sedimentary and tectonic features, with evidence of a narrow north‐trending early Miocene pull‐apart basin in the east [ Roure et al , 2009]. Actually, the thick Tortonian‐Messinian post‐rift series of the offshore Algerian Basin are currently underthrust beneath east‐trending and north‐verging thrusts that developed during the Quaternary near the toe of the current continental slope along most if not the entire length of the Algerian coast [ Auzende et al , 1975; Auzende , 1978; Mauffret et al , 1987, 2004; Cope , 2003; Deverchère et al , 2005; Roure et al , 2009; Yelles et al , 2009].…”

Section: Present‐day Configuration Of the North African Continental Mmentioning

confidence: 99%

Alpine inversion of the North African margin and delamination of its continental lithosphere

Roure¹,

Casero²,

Addoum³

2012

Tectonics

169

128

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This paper aims at summarizing the current extent and architecture of the former Mesozoic passive margin of North Africa from North Algeria in the west up to the Ionian‐Calabrian arc and adjacent Mediterranean Ridge in the east. Despite that most paleogeographic models consider that the Eastern Mediterranean Basin as a whole is still underlain by remnants of the Permo‐Triassic or a younger Cretaceous Tethyan‐Mesogean ocean, the strong similarities documented here in structural styles and timing of inversion between the Saharan Atlas, Sicilian Channel and the Ionian abyssal plain evidence that this portion of the Eastern Mediterranean Basin still belongs to the distal portion of the North African continental margin. A rim of Tethyan ophiolitic units can be also traced more or less continuously from Turkey and Cyprus in the east, in onshore Crete, in the Pindos in Greece and Mirdita in Albania, as well as in the Western Alps, Corsica and the Southern Apennines in the west, supporting the hypothesis that both the Apulia/Adriatic domain and the Eastern Mediterranean Basin still belong to the former southern continental margin of the Tethys. Because there is no clear evidence of crustal‐scale fault offsetting the Moho, but more likely a continuous yet folded Moho extending between the foreland and the hinterland beneath the Mediterranean arcs, we propose here a new model of delamination of the continental lithosphere for the Apennines and the Aegean arcs. In this model, only the mantle lithosphere of Apulia and the Eastern Mediterranean is still locally subducted and recycled in the asthenosphere, most if not all the northern portion of the African crust and coeval Moho being currently decoupled from its former, currently delaminated and subducted mantle lithosphere.

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“…, 2004). The eastern Alboran Sea is also characterized by large strike–slip faults: Yusuf Fault (Mauffret et al. , 1987; Alvarez‐Marrón, 1999); Carboneras Fault onshore (Martínez‐Díaz and Hernández‐Enrile, 2004) and offshore (Rodriguez‐Fernandez and Martin‐Penela, 1993; Gràcia et al.…”

Section: Brief Description Of the Alboran Sea Structurementioning

confidence: 99%

The Alboran Sea (Western Mediterranean) revisited with a view from the Moroccan Margin

Mauffret

Ammar²,

Gorini

et al. 2007

Terra Nova

Self Cite

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This paper presents a new depth to acoustic basement map based on a grid of seismic profiles. In the Western Alboran Basin the basement is more than 10 km deep. An examination of a seismic profile of this region suggests that Late Oligocene-Early Miocene 5 km thick synrift formation has been accumulated in this basin. This West Alboran basin has been formed in an extensional setting, but in a fore-arc position, south of the Balearic Islands then westwards transported behind a subduction zone.

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Indice de la compression recente en mer Mediterranee; un bassin losangique sur la marge nord-algerienne

Cited by 47 publications

References 0 publications

Searching for the Africa–Eurasia Miocene boundary offshore western Algeria (MARADJA'03 cruise)

Searching for the Africa–Eurasia Miocene boundary offshore western Algeria (MARADJA'03 cruise)

Alpine inversion of the North African margin and delamination of its continental lithosphere

The Alboran Sea (Western Mediterranean) revisited with a view from the Moroccan Margin

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