Post-collisional Neogene magmatism of the Mediterranean Maghreb margin: a consequence of slab breakoff

Maury, René C.; Fourcade, Serge; Coulon, Christian; Azzouzi, M. El; Bellón, Hervé; Coutelle, Alain; Ouabadi, Aziouz; Semroud, Belkacem; Megartsi, M'hamed; Cotten, Joseph; Belanteur, Ouardia; Louni-Hacini, Amina; Piqué, Alain; Capdevila, Ramon Buxó i; Hernandez, Jean; Réhault, Jean-Pierre

doi:10.1016/s1251-8050(00)01406-3

Cited by 89 publications

(131 citation statements)

References 52 publications

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“…Probably, the deep intrusive body causing this anomaly is of Miocene age and belongs to postcollisional Neogene magmatism as most of the scattered volcanic rocks along the Mediterranean Maghreb Margin [33]. The reducedto-pole magnetic map (Figure 6(c)) shows a shift of the anomalies to the north which shows that the reduction to pole transformation is done correctly.…”

Section: Aeromagnetic Data Interpretationmentioning

confidence: 89%

Combining Resistivity and Aeromagnetic Geophysical Surveys for Groundwater Exploration in the Maghnia Plain of Algeria

Boubaya

2017

Journal of Geological Research

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The Maghnia plain in western Algeria is filled by Plio-Quaternary and Miocene sediments that rest unconformably on a basement of Jurassic rocks. Electrical sounding (VES), magnetic data, well information, and hydrogeological data have been used to explore for groundwater potential in the Maghnia plain. The interpretation of Schlumberger sounding data was first calibrated with the lithology of available nearby wells. Four geoelectrical layers were identified within the study area. They are a thin near surface topsoil layer with variable resistivities, a moderate resistive aquifer (15-30 ohm-m), a resistive aquifer (40-70 ohm-m), and a conductive clay layer (1-10 ohm-m). Near Sidi Mbarek, the geoelectric section is reduced to three layers: a topsoil layer, a conductive layer corresponding to the Miocene marls, and a deep resistive layer that correlates with the Oxfordian sandstones. The interpretation of VES data and the enhancement techniques of magnetic data enabled the identification of a number of unmapped faults that occur near recharge zones close to adjacent mountains. This study enabled us to study the extension of the known Plio-Quaternary aquifer of the Maghnia plain and to explore the possible existence of a second deep groundwater aquifer in Oxfordian sandstones.

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Section: Aeromagnetic Data Interpretationmentioning

confidence: 89%

Combining Resistivity and Aeromagnetic Geophysical Surveys for Groundwater Exploration in the Maghnia Plain of Algeria

Boubaya

2017

Journal of Geological Research

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“…K-Ar datings of lavas have been published by Harmand & Cantagrel (1984), Berrahma (1995), Rachdi (1995) andEl Azzouzi et al (1999). The petrogenesis and the tectonic setting of the alkali basalts and related lavas have been discussed by a number of authors, including Bernard-Griffiths et al (1991), Berrahma (1995), Rachdi (1995), Mourtada et al (1997), El Azzouzi et al (1999, Maury et al (2000), Coulon et al (2002), Savelli (2002), Duggen et al (2005), Teixell et al (2005) and Missenard et al (2006).…”

Section: The Cenozoic Volcanic History Of the Atlas Systemmentioning

confidence: 99%

The Atlas System

Lamotte

Zizi

Missenard

et al.

Continental Evolution: The Geology of Morocco

112

114

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“…This succession is affected by a Tertiary active geodynamic event attested by several tectonic phases and is intruded by a Neogene polycyclic magmatism that has been the subject to sever- al studies (e. g., Raoult, 1974;Vila, 1980). Most igneous rocks of northeast Algeria display calc-alkaline affinities and their radiometric ages range from 20 to 8 Ma (Hilly, 1962;Bellon, 1976;Fougnot, 1990;Maury et al, 2000;Laouar et al, 2005).…”

Section: Geological Settingmentioning

confidence: 99%

Northeastern extension of Neogene magmatism in Africa: Evidence from the Zitouna rhyolite, Algeria

Daif¹,

Toubal²

2017

Trab. geol.

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Abstract:The Zitouna rhyolite is the easternmost representative of the Neogene magmatism in the Northeast of Algeria. It is composed of two intrusive rhyolitic apexes: the first outcrop is poorly known and not dated; the second one is greater, and not previously described. It is a well-differentiated rock that does not exceed 12 Ma (Post-Serravallian). Geochemical data show that it belongs to S-type granites with a high peraluminous character corroborating a crustal protolith. The Zitouna rhyolite is considered as the continuation of other neighbouring magmatic episodes and can be related to the late Neogene tectono-magmatic evolution of northeast Africa.Keywords: rhyolite, post-Serravallian, S-type granites, peraluminous, Zitouna, Algeria.Resumen: La riolita de Zitouna es la representación más oriental del magmatismo neógeno en el noreste de Argelia. Está formada por dos cuerpos intrusivos riolíticos: el primer afloramiento es vagamente conocido y no ha sido datado; el segundo es de mayores dimensiones y no ha sido descrito previamente. Se trata de una roca bien diferenciada que no excede de los 12 Ma (Post-Serravaliense). Los datos geoquímicos muestran que corresponde a un granito de tipo S con alto carácter peralumínico, lo que corrobora un protolito cortical. La riolita de Zitouna es considerada como la continuación de otros episodios magmáticos vecinos y puede ser relacionada con la evolución tectono-magmática del noreste africano durante el Neógeno superior.

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Post-collisional Neogene magmatism of the Mediterranean Maghreb margin: a consequence of slab breakoff

Cited by 89 publications

References 52 publications

Combining Resistivity and Aeromagnetic Geophysical Surveys for Groundwater Exploration in the Maghnia Plain of Algeria

Combining Resistivity and Aeromagnetic Geophysical Surveys for Groundwater Exploration in the Maghnia Plain of Algeria

The Atlas System

Northeastern extension of Neogene magmatism in Africa: Evidence from the Zitouna rhyolite, Algeria

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