Mise en évidence d'un volcanisme d'arc néoprotérozoïque dans le Haut-Atlas occidental (Maroc)

Ouazzani, Hassane; Badra, Lakhlifi; Pouclet, André; Prost, André

doi:10.1016/s1251-8050(99)80072-x

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…With the lack of fossil occurrences, it remains difficult to confirm this assumption. A recent geochemical study has refuted this age and interprets these units as Neoproterozoic deformed during the Panafrican orogeny (c. 600-500 Ma) (Ouazzani et al 1998(Ouazzani et al , 2001. Based only on lithological and geochemical comparisons, this interpretation remains questionable.…”

Section: General Geologymentioning

confidence: 99%

Example of a structurally controlled copper deposit from the Hercynian western High Atlas (Morocco): the High Seksaoua mining district

Chauvet

Barbanson

Gaouzi

et al. 2002

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The mineralized district of the High Seksaoua (Western High Atlas, Morocco) is characterized by a lithological succession marked by an alternation of schists and limestones attributed to the Cambrian and affected by at least five deformational events. The copper mineralization herein analysed is systematically localized close to a dolomite/black schist level in which a top-to-the-NNW d6collement-type tectonics (Dd) has been identified. We demonstrate that the economic mineralization is a syn-tectonic stockwork formed in response of this top-to-the-NNW shearing event (Dd). This tectonic event can be reasonably correlated with the late Hercynian tectonics responsible, in the same area, for the Tichka granite emplacement at c. 291 ± 5 Ma, also under the control of a NW-SE shortening direction. Indeed, the Tichka granite represents a good candidate to explain the origin of the mineralized fluid. Such an hypothesis is confirmed by the Permo-Triassic age (c. 270 Ma) given by 4°Ar/39Ar dating realized on white micas related to the stockwork formation (this study). This important result questions the syn-genetic interpretation accepted until now for this mineralization and allows us to propose a new model of formation for this kind of deposit that could contribute to exploration programmes.

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Section: General Geologymentioning

confidence: 99%

Example of a structurally controlled copper deposit from the Hercynian western High Atlas (Morocco): the High Seksaoua mining district

Chauvet

Barbanson

Gaouzi

et al. 2002

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“…These units have been attributed by facies analogy to the Lower to Middle Cambrian [3, 13 and 15]. More recently, this age has been discussed on the basis of geochemical data and a Neoproterozoic age for sediments deformed during the Panafrican was the adopted solution [10]. We cannot in this work solve this controversy even if we prefer to assimilate the herein studied deformation to the Hercynian orogeny and the sedimentary units to the Cambrian, as previously suggested [3, 4 and 14].…”

Section: Geological Settingmentioning

confidence: 99%

“…Ces formations ont été attribuées au Cambrien inférieur ou moyen par analogie de faciès[3, 13 and 15]. Plus récemment, sur des arguments géochimiques, cet âge Cambrien a été discuté et ces roches ont été interprétées comme déposées au cours du Néoprotérozoïque et déformées au Panafricain[10]. Dans notre étude, aucun argument ne sera amené pour choisir entre les deux solutions proposées plus haut.…”

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Mise en place syntectonique des minéralisations cuprifères du gı̂te d'Ifri (district du Haut Seksaoua, Haut Atlas occidental, Maroc)

Gaouzi

Chauvet

Barbanson

et al. 2001

Comptes Rendus de l'Académie des Sciences - Series IIA - Earth

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Mise en place syntectonique des minéralisations cuprifères du gîte d'Ifri (district du Haut Seksaoua, Haut Atlas occidental, Maroc)-Syntectonic emplacement of the Ifri copper mineralization (High Seksaoua, western High Atlas, Morocco)

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Comment on "Geochemistry, Rb-Sr whole rock age and Sr-Nd isotopic constraints on the Variscan A-type granite from Azegour area in the Marrakech High Atlas (Moroccan Meseta) and their geodynamic implications" by Hadani et al. (2024): Geologos 30, 1 (2024): 1–16

Loudaoued,

Elbakhouch,

Touil

et al. 2024

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Mise en évidence d'un volcanisme d'arc néoprotérozoïque dans le Haut-Atlas occidental (Maroc)

Cited by 4 publications

References 5 publications

Example of a structurally controlled copper deposit from the Hercynian western High Atlas (Morocco): the High Seksaoua mining district

Example of a structurally controlled copper deposit from the Hercynian western High Atlas (Morocco): the High Seksaoua mining district

Mise en place syntectonique des minéralisations cuprifères du gı̂te d'Ifri (district du Haut Seksaoua, Haut Atlas occidental, Maroc)

Comment on "Geochemistry, Rb-Sr whole rock age and Sr-Nd isotopic constraints on the Variscan A-type granite from Azegour area in the Marrakech High Atlas (Moroccan Meseta) and their geodynamic implications" by Hadani et al. (2024): Geologos 30, 1 (2024): 1–16

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