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Oudra, Moulid; Beraaouz, H.; Ikenne, Moha; Gasquet, Dominique; Soulaı̈mani, Abderrahmane

doi:10.3989/egeol.05613-658

Cited by 13 publications

(6 citation statements)

References 20 publications

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“…In the late Neoproterozoic, the Ighrem group consists of often rough detritic deposits and volcanic rocks (ignimbrites, pyroclastites of a rhyolitic, dacitic, or andesitic nature). The latter are surmounted by detrital facies which testify to a generalized emersion of the Western Anti-Atlas at the end of the Neoproterozoic [12].…”

Section: Geologymentioning

confidence: 99%

“…The study area is located in the contact zone between the Ighrem buttonhole formed by a Precambrian basement consisting largely of magmatic and metamorphic rocks [12], and a Paleozoic cover characterized by abundance of carbonate formations [13] (Figure 2). The Precambrian buttonhole of Ighrem consists of a Paleoproterozoic basement and a Neoproterozoic cover.…”

Section: Geologymentioning

confidence: 99%

“…These formations are bordered by the overlying Neoproterozoic formations. Most of the crystalline basement formations consist of granites and a metamorphic series represented by sandstone schists, micaschists, and gneisses, located in the immediate surroundings of the granites [12]. In the Ighrem buttonhole, the Neoproterozoic lies directly on the Paleoproterozoic.…”

Section: Geologymentioning

confidence: 99%

“…The Ourty group is represented by quartzites and limestones. It corresponds to the upper fragile unit, while Ighrem group refers to the conglomerates and volcano-detritic formations that have deposited in late to post Pan-African basins [12]. The upper Neoproterozoic comprises poorly classified conglomeratic formations with striated pebbles of metamorphic quartzites.…”

Section: Geologymentioning

confidence: 99%

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Mapping of Groundwater Potential Zones in Crystalline Terrain Using Remote Sensing, GIS Techniques, and Multicriteria Data Analysis (Case of the Ighrem Region, Western Anti-Atlas, Morocco)

Benjmel

Amraoui

Boutaleb

et al. 2020

Water

116

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This research work is intended as a contribution to the development of a multicriteria methodology, combining several factors to control the availability of groundwater resources, in order to optimize the choice of location of future drilling and increase the chances to take water from productive structures which will satisfy the ever-increasing water demand of local population (Arghen basin in the Western Anti-Atlas chain of Morocco). The geographic information system is used to develop thematic maps describing the geometry and the hydrodynamic functioning of the aquifer. In this study, 11 factors including geology, topography, and hydrology, influencing the distribution of water resources were used. Based on the Analytical Hierarchy Process (AHP) model, GIS, and remote sensing, the study mapped and classified areas according to their hydrogeological potential. The favorable potential sectors cover 17% of the total area of the basin. The medium potential sectors account for 64%, while the unfavorable areas cover 18% of the basin area. The groundwater potential map of the study area has been validated by comparing with data from 159 boreholes scattered throughout the basin.Water 2020, 12, 471 2 of 16 rural populations [2][3][4]. The aquifers that form in this type of context generally consist of crystalline rocks of plutonic and metamorphic origin (gneiss, schists, micaschists, etc.). These are hard rocks that expose relatively homogeneous mechanical behavior and overall hydraulic properties and are characterized mainly by fracture permeability [5]. Conventional research and prospection methods (hydrochemical, geophysical, etc.) often take a long time, require a lot of financial resources, and need qualified personnel [6][7][8]. In recent decades, several studies have shown that the analytical hierarchy process (AHP), based on geographical information systems (GIS) and spatial remote sensing, offers good functionality for mapping the groundwater recharge area [7][8][9][10][11].The main objective of this study was to evaluate the ability of AHP and GIS techniques to map potential groundwater areas, to provide policy makers and managers with a guide map for hydrogeological research, to guide the implementation of future points of water, and consequently reduce the costs of hydrogeological investigation.

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Section: Geologymentioning

confidence: 99%

Section: Geologymentioning

confidence: 99%

Section: Geologymentioning

confidence: 99%

Section: Geologymentioning

confidence: 99%

See 2 more Smart Citations

Mapping of Groundwater Potential Zones in Crystalline Terrain Using Remote Sensing, GIS Techniques, and Multicriteria Data Analysis (Case of the Ighrem Region, Western Anti-Atlas, Morocco)

Benjmel

Amraoui

Boutaleb

et al. 2020

Water

116

View full text Add to dashboard Cite

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“…A l'échelle de l'Anti-Atlas cette extension s'exprime également par l'exhumation de faciès métamorphiques paléoprotérozoïques profonds sous forme de dômes métamorphiques extensifs mis en évidence dans les boutonnières de Kerdous et d'Igherm (Soulaimani et Piqué, 2004 ;Oudra et al, 2005). D'après les travaux de Hooper et al (1995), la remontée du manteau lors de la phase extensive apporte la chaleur nécessaire à la fusion partielle des matériaux basi-crustaux à l'origine de magmas calco-alcalins.…”

Section: Discussion Et Contexte Geodynamiqueunclassified

The tardi-Pan-African granitoids of South-Westerner Anti-Atlas (Morocco): Evolution from magnesian to ferroan type. Example of the Ifni inlier

Mortaji¹,

Gasquet

Ikenne³

et al. 2007

Estud. geol.

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Field, geochemistry and Sr-Nd isotopes of the Pan-African granitoids from the Tifnoute Valley (Sirwa, Anti-Atlas, Morocco): a post-collisional event in a metacratonic setting

et al. 2012

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International audienceIn the Tifnoute Valley, three plutonic units have been defined: the Askaoun intrusion, the Imourkhssen intrusion and the Ougougane group of small intrusions. They are made of quartz diorite, granodiorite and granite and all contain abundant mafic microgranular enclaves (MME). The Askaoun granodiorite and the Imourkhssen granite have been dated by LA-ICP-MS on zircon at 558 ± 2 Ma and 561 ± 3 Ma, respectively. These granitic intrusions are subcontemporaneous to the widespread volcanic and volcano-detrital rocks from the Ouarzazate Group (580-545 Ma), marking the post-collisional transtensional period in the Anti-Atlas and which evolved towards alkaline and tholeiitic lavas in minor volume at the beginning of the Cambrian anorogenic intraplate extensional period. Geochemically, the Tifnoute Valley granitoids belong to an alkali-calcic series (high-K calc-alkaline) with typical Nb-Ta negative anomalies and no alkaline affinities. Granitoids and enclaves display positive εNd-560Ma (+0.8 to +3.5) with young Nd-TDM between 800 and 1200 Ma and relatively low 87Sr/86Sr initial ratios (Sri: 0.7034 and 0.7065). These values indicate a mainly juvenile source corresponding to a Pan-African metasomatized lithospheric mantle partly mixed with an old crustal component from the underlying West African Craton (WAC). Preservation in the Anti-Atlas of pre-Pan-African lithologies (c. 2.03 Ga basement, c. 800 Ma passive margin greenschist-facies sediments, allochthonous 750-700 Ma ophiolitic sequences) indicates that the Anti-Atlas lithosphere has not been thickened and was never an active margin during the Neoproterozoic. After a transpressive period, the late Ediacaran period (580-545 Ma) is marked by movement on near vertical transtensional faults, synchronous with the emplacement of the huge Ouarzazate Group and the Tifnoute Valley granitoids. We propose here a geodynamical model where the Tifnoute Valley granitoids as well as the Ouarzazate Group were generated during the post-collisional metacratonic evolution of the northern boundary of the West African craton. The convergence with the peri-Gondwanan active margin produced brittle fracturing of the cratonic boundary without thickening, allowing rising of magmas. The Tifnoute Valley granitoids display a metasomatized lithospheric mantle source mixed with a minor ancient (2 Ga) continental crust component from the underlying WAC

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Untitled

Cited by 13 publications

References 20 publications

Mapping of Groundwater Potential Zones in Crystalline Terrain Using Remote Sensing, GIS Techniques, and Multicriteria Data Analysis (Case of the Ighrem Region, Western Anti-Atlas, Morocco)

Mapping of Groundwater Potential Zones in Crystalline Terrain Using Remote Sensing, GIS Techniques, and Multicriteria Data Analysis (Case of the Ighrem Region, Western Anti-Atlas, Morocco)

The tardi-Pan-African granitoids of South-Westerner Anti-Atlas (Morocco): Evolution from magnesian to ferroan type. Example of the Ifni inlier

Field, geochemistry and Sr-Nd isotopes of the Pan-African granitoids from the Tifnoute Valley (Sirwa, Anti-Atlas, Morocco): a post-collisional event in a metacratonic setting

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