Ntarmouchant Ahmed

Sidi Mohamed Ben Abdellah University · Geology

Morocco has an important geothermal potential materialized by its several thermal springs which constitute an essential surface geothermal indicator. These springs are dispersed throughout the country and present in every major structural domain. However, a significant amount is concentrated in the northern and northeastern areas. Associated with t...

The High Moulouya Basin (HMB) occupies a key location between the Southern Middle Atlas and the Central High Atlas. Gravity data from the HMB show the presence of three gravity lows. Borehole data show a thin Meso-Cenozoic cover in the HMB that eliminates the possibility that these lows are due to sedimentary rocks. The gravity anomalies may theref...

The Permian magmatic rocks from Morocco contain crustal xenoliths that sample the Variscan crust in a context of widespread magmatism. A series of such xenoliths was collected in Permian dykes of the Central Massif, in the region of Mrirt. The metapelitic xenoliths are silica poor to intermediate (44 < SiO2<57 wt.%) and alumina-rich (17 < Al2O3 < 3...

The High Moulouya Basin (HMB) occupies a key location between the Southern Middle Atlas and the Central High Atlas. Gravity data from the HMB show the presence of three gravity lows. Borehole data show a thin Meso-Cenozoic cover in the HMB that eliminates the possibility that these lows are due to sedimentary rocks. The gravity anomalies may theref...

Reprendre.L'aquifère de Foum El Oued est siMardans une zone côtière, à l 'Oest de la ville de Laâyoune. Il s'étend surune superficie d'environ 250 km2etEAU PREMIÈRE POUR LA VILLE DE LAAYYNE ET LES communesvoisines.De ce faitil est important d'étudier et de préserver. Les prélèvements effectuésuent en grande partieau niveau du champion captant de l'...

An: Presentation: The evolution of geosciences and the progress of technology can be put at the service of sustainable development, which takes into consideration both the improvement of the living conditions of man and the protection of the environment against the degradation of its natural resources. In this context, the Laboratory of Geodynamics...

The South Rif Thrust (Northern Morocco) is characterized by several thermo-mineral water sources with outlet temperatures ranging from 24 °C to 54 °C. The anomalous temperatures of these resurgences are linked to deep circulation in areas where the geothermal gradients are abnormally high (> 35 °C km−1). Nonetheless, the factors that govern the geo...

The Foum El Oued aquifer is located in the coastal Atlantic Ocean in the West of Laayoun City. This aquifer covers an area of 250 Km2 and represents an essential water resource for Laayoun city and its periphery regions. It is heavily exploited for water supply, agriculture and industry. The pumping is carried out mainly at the level of the perimet...

The South Rif Thrust (Northern Morocco) is characterized by several thermo-mineral water sources with outlet temperatures ranging from 24 °C to 54 °C. The anomalous temperatures of these resurgences are linked to deep circulation in areas where the geothermal gradients are abnormally high (>35 °C km−1). Nonetheless, the factors that govern the geol...

Dear researchers, Geoscience and the progress of technology can be put to the service of the environment for the improvement of human living conditions. In this context, the Laboratory of Geodynamics and Natural Resources (LGRN), Department of Geology, The Second Edition of Doctoral Days (2EJD), to be held on January 14 & 15, 2019 at the Faculty...

Dear specialists, Geosciences and the advancement of innovation can be put to the environmental management in order to the enhancement of human living conditions. In this way, the Laboratory of Geodynamics and Natural Resources (LGRN) in collaboration with the Department of Geology and the CeDoc "Science and Technology", organize The Second Edition...

L’évolution des géosciences et le progrès de la technologie peuvent être mis au service de développement durable, qui prend en considération à la fois, l’amélioration des conditions de vie de l’Homme et la protection de l’environnement contre la dégradation de ses ressources naturelles. Dans ce cadre, le Laboratoire de Géodynamique et Ressources Na...

Laayoune and the Foum El Oued aquifers are in hydraulic communication only at the level of Oued Saguia El Hamra. The present study has accordingly made use of all the hydrogeological, hydrological, geological and geophysical data that preceded the watershed of Oued Saguia El Hamra in its downstream part. These data are by no means omplementary with...

Dear researchers, Geoscience and the progress of technology can be put to the service of the environment for the improvement of human living conditions. In this context, the Laboratory of Geodynamics and Natural Resources (LGRN), Department of Geology, The Second Edition of Doctoral Days (2EJD), to be held on January 14 & 15, 2019 at the Faculty...

Résumé. L’aquifère de Foum El Oued est situé dans une zone côtière, à l’Ouest de la ville de Laâyoune. Il s’étend sur une superficie d’environ 250 km2 et représente une ressource en eau primordiale pour la ville de Laâyoune et les communes voisines. De ce fait il est important de l’étudier et de le préserver. Les prélèvements s’effectuent en grande...

Moroccan Variscan middle crust thermal state

The Azrou-Khénifra basin, located in the SE sector of the Moroccan Central Hercynian Massif of the Western Meseta of Morocco comprises volcanic and volcanoclastic rocks where two magmatic sequences can be distinguished: i) the Dhar Lahmar Sequence, composed of Upper Visean basaltic lava flows and pyroclastic deposits; and ii) the Kef Al Asri Sequen...

In the northeastern edge of the Tizi n'Trehtene Fault zone, situated within the Causse Atlasic, several lakes are aligned in the NE-SW direction. Among these lake Dayet Ifrah occupies the northern part of a polje of Amekla. This lake is fed by a small river (ravine) flowing from the southwest of its catchment area. This ravine erode the lake sedime...

Kalana gold deposit occurs within Paleoproterozoic (2210-2100 Ma) metavolcanosedimentary series of southern Mali (Baoulé Mossi domain of WAC). These Birimian formations are intruded successively by several small dioritic bodies (1860 Ma), andesitic and tonalitic dykes exhibiting a volcanic arc setting signatures. The sulfide and gold mineralization...

Xenoliths in volcanoes can, under suitable conditions, provide key constraints on the architecture of both the underlying crustal segments and magma conduits/chambers. Using thermobarometry to calculate the depth of the provenance level and geochronology to trace known or unknown crustal units, main crustal boundaries, e.g. detachment zones known f...

In the Fourhal foreland basin, in the north-eastern part of the Marrocan Central Meseta, mafic series are represented by basalts interbedded with Early Namurian turbidites and by numerous mafic sills, including the Marziqallal sill detailed here. The study of the trace element compositions of the clinopyroxenes, a ubiquitous mineral in the gabbroic...

Résumé -Les sources thermales de Moulay Yacoub 'My.Y.' sourdent au niveau d'une structure anticlinale en relation avec le fonctionnement d'un chevauchement aveugle. La forte minéralisation de ces eaux thermales reflète leur circulation dans des réservoirs de nature lithologique variée. Ces eaux comportent deux faciès chimiques, un faciès + − − Na C...

Basaltic magmatism occurs in the Hercynian foreland basin of the Western Moroccan Meseta as pillow lavas flows interbedded with ``flysch'' deposits and sills of dolerite and gabbro. A sedimentological and tectonic study shows that the deposition of the flysch, and thus the intrusion of the lava flows and sills, was controlled by the northwestward p...

Abstract: In the eastem part of the Central Hercynian Massif of Morocco, some sills are interbeded with the Upper Carboniferous formations of the southem basin ofAzrou-Khénifra. These sills displays the same folds and overthrusts that observed in the surrounding sedimentary beds, a fact that demonstrates their syntectonic character. Their chemical...