Tectonic styles in the Marrakesh High Atlas (Morocco): The role of heritage and mechanical stratigraphy

Missenard, Yves; Taki, Z.; Lamotte, Dominique Frizon de; Benammi, Mohamed; Hafid, Mohamad; Leturmy, Pascale; Sébrier, Michel

doi:10.1016/j.jafrearsci.2007.03.007

Cited by 73 publications

(49 citation statements)

References 41 publications

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“…20). Although uplift of the Atlas Mountains may have begun during the Late Cretaceous (Guiraud and Bosworth, 1997), the first major Cenozoic tectonic event in the Atlas region occurred during the Late Eocene (Guiraud, 1975(Guiraud, , 1990Aris et al, 1998;Frizon de Lamotte et al, 2000;Bracène and Frizon de Lamotte, 2002;Guiraud et al, 2005;El Harfi et al, 2006;Missenard et al, 2007). This compressional event is referred to by Guiraud et al (2005) as the ''Pyrenean-Atlasic" event.…”

Section: Eocenementioning

confidence: 99%

“…In the High Atlas region of Morocco, some interpretations suggest that tectonic uplift began during the Late Eocene and continued during the Oligocene (El Harfi et al, 2006), whereas other interpretations suggest that this region experienced tectonic quiescence during the Oligocene (Missenard et al, 2007). Tectonic quiescence is also thought to have occurred in Algeria during the Oligocene and Early Miocene (Frizon de Lamotte et al, 2000;Bracène and Frizon de Lamotte, 2002).…”

Section: Oligocenementioning

confidence: 99%

“…2) provide some details on the timing of uplift. In Morocco, for example, the appearance of conglomerate in the Lower-Middle Miocene basal member of the Ait Kandoula Formation is equated with the beginning of a major Cenozoic tectonic event, which culminated during the Late Pliocene or Early Pleistocene with the accumulation of conglomerate in the upper member of the Ait Kandoula Formation (El Harfi et al, 2006;Missenard et al, 2007). Further east in southern Tunisia, sandstone of the Beglia Formation was deposited by a fluvial system that flowed north toward the Mediterranean Sea during the Serravallian to Tortonian (late Middle Miocene to early Late Miocene).…”

Section: Miocenementioning

confidence: 99%

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Cenozoic stratigraphy of the Sahara, Northern Africa

Swezey

2009

Journal of African Earth Sciences

115

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Section: Eocenementioning

confidence: 99%

Section: Oligocenementioning

confidence: 99%

Section: Miocenementioning

confidence: 99%

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Cenozoic stratigraphy of the Sahara, Northern Africa

Swezey

2009

Journal of African Earth Sciences

115

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“…Au sud de la Meseta marocaine, le massif des Jebilet correspond à des affleurements de terrains paléozoïques, dont la surrection récente, au nord de la chaine du Haut Atlas (Missenard et al, 2007), forme un chaînon allongé équatorialement en séparant la plaine du Haouz au sud de celle de la Bahira au nord ( fig. 1c).…”

Section: Les Jebilet Orientalesunclassified

Tectono-Sedimentary and magmatic evolution of the Upper Visean basins of Azrou-Khénifra and eastern Jebilet (Moroccan Meseta)

Bamoumen¹,

Aarab²,

Soulaı̈mani³

2008

Estud. geol.

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During Upper Visean times, the eastern mesetian basins of eastern Jebilet and Azrou Khenifra show great tectono-sedimentary and magmatic evolution similarities. Their deposits record large instabilities and disorganization with huge thickness and lithological variations, related to a synsedimentary tectonic context. At the same time, tilted block tectonics affect the basement of these basins, controlled by bordering transfert faults. Basic dominant magmatic bodies set up in these basins. Their continental alkaline chemical characteristics are consistent with the regional geodynamic context in this area. Initiated along the transitional zone between eastern and western Meseta, the Azrou-Khenifra and Jebilet basins correspond to intracontinental throws, initiated on and controlled by major strike-slip faults. Their evolution is most likely earlier in time and of a weak opening rate than the neighboring western Meseta basins.

Au Viséen supérieur, les bassins mesetiens des Jebilet orientales et dâ€™Azrou Khénifra montrent de grandes similitudes de leur évolution tectono-sédimentaire et magmatiques. Leurs dépôts enregistrent de grandes instabilités liées à une tectonique syn-sédimentaire responsable localement dâ€™une intense désorganisation et de grandes variations de faciès et dâ€™épaisseurs. Ces instabilités sont engendrées par une tectonique en blocs basculés qui affecte le substratum anté-Viséen, contrôlée par des accidents bordiers sub-verticaux à forte composante transcurrente. Des corps magmatiques, pour lâ€™essentiel basiques, se mettent en place dans ces bassins. Ils présentent des caractères chimiques des séries magmatiques alcalines mise en place dans un contexte intracontinental et anorogénique. Initiés le long de la zone de transition entre la Meseta orientale et occidentale, les bassins dâ€™Azrou-Khénifra et des Jebilet orientales correspondent à des sillons intracontinentaux, initiés et contrôlés par des décrochements. Leur évolution est sans doute plus précoce et montre un faible taux dâ€™ouverture que celui enregistré dans les bassins adjacents de la meseta occidentale

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“…In the MHA North Front, Pleistocene tectonic activity has been evidenced for the 25 years (Dutour and Ferrandini, 1985;Missenard et al, 2007) but no significant information has been supplied on recent morphotectonic evolution either of the northern range or the axial zone of the MHA.…”

Section: Introductionmentioning

confidence: 99%