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

Mortaji, A.; Gasquet, Dominique; Ikenne, Moha; Beraaouz, El Hassane; Barbey, Pierre; Aouli, E.H. El

doi:10.3989/egeol.07631186

Cited by 10 publications

(11 citation statements)

References 41 publications

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“…The Moroccan Anti-Atlas is located in the northern part of the West African craton (WAC) ( Figure 1A), where Proterozoic terranes outcrop in the form of inliers within a Neoproterozoic to Paleozoic cover [40]. The substratum of Anti-Atlas inliers was structured by two main Precambrian orogenic events: (i) the Eburnean and (ii) the Pan-African [41][42][43][44].…”

Section: Geological Contextmentioning

confidence: 99%

“…The Sidi Ifni inlier is situated in the western edge of Anti-Atlas. It is composed ( Figure 2) of a Paleoproterozoic granitic basement and a Neoproterozoic cover [46,47] intruded by Neoproterozoic granites with Rb/Sr ages situated between 689 ± 20 Ma and 541 ± 8 Ma [40,[48][49][50][51]. The Neoproterozoic cover constitutes a quarzitic sandstone sedimentary series followed without unconformity with a volcano-sedimentary series, the bode series belong to a super Ouarzazate group (SOG) [40].…”

Section: Geological Contextmentioning

confidence: 99%

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Machine Learning Algorithms for Automatic Lithological Mapping Using Remote Sensing Data: A Case Study from Souk Arbaa Sahel, Sidi Ifni Inlier, Western Anti-Atlas, Morocco

Bachri

Hakdaoui

Raji

et al. 2019

IJGI

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Remote sensing data proved to be a valuable resource in a variety of earth science applications. Using high-dimensional data with advanced methods such as machine learning algorithms (MLAs), a sub-domain of artificial intelligence, enhances lithological mapping by spectral classification. Support vector machines (SVM) are one of the most popular MLAs with the ability to define non-linear decision boundaries in high-dimensional feature space by solving a quadratic optimization problem. This paper describes a supervised classification method considering SVM for lithological mapping in the region of Souk Arbaa Sahel belonging to the Sidi Ifni inlier, located in southern Morocco (Western Anti-Atlas). The aims of this study were (1) to refine the existing lithological map of this region, and (2) to evaluate and study the performance of the SVM approach by using combined spectral features of Landsat 8 OLI with digital elevation model (DEM) geomorphometric attributes of ALOS/PALSAR data. We performed an SVM classification method to allow the joint use of geomorphometric features and multispectral data of Landsat 8 OLI. The results indicated an overall classification accuracy of 85%. From the results obtained, we can conclude that the classification approach produced an image containing lithological units which easily identified formations such as silt, alluvium, limestone, dolomite, conglomerate, sandstone, rhyolite, andesite, granodiorite, quartzite, lutite, and ignimbrite, coinciding with those already existing on the published geological map. This result confirms the ability of SVM as a supervised learning algorithm for lithological mapping purposes.

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Section: Geological Contextmentioning

confidence: 99%

Section: Geological Contextmentioning

confidence: 99%

Machine Learning Algorithms for Automatic Lithological Mapping Using Remote Sensing Data: A Case Study from Souk Arbaa Sahel, Sidi Ifni Inlier, Western Anti-Atlas, Morocco

Bachri

Hakdaoui

Raji

et al. 2019

IJGI

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“…The geological formations in the basin consist primarily of a Paleoproterozoic basement, represented by Alouzad granite, and a Neoproterozoic cover, represented by the quartzose sandstone series of the Lkest group, as well as volcano-sedimentary formations (Figure 2) [6,[35][36][37]. The Neoproterozoic formations include Sahel massif granodiorites to the north of the basin, the granodioritic and monzogranitic massif of Mesti to the south, the granodioritic massif of Ifni forming an elongated massif east of the city of Ifni, Tourza granodiorite in the southeast of the basin, Taoulecht and Tourza granites in elongated NNE-SSW bands in the center of the basin, and the pink granite of Mirleft to the northwest of the basin [6,[36][37][38]. This Proterozoic complex is overlaid by basic conglomerates of terminal Proterozoic and lower Cambrian carbonate formations [38][39][40][41][42].…”

Section: Study Areamentioning

confidence: 99%

“…The Ifni basin in Morocco serves as a prime example of the challenges faced by regions dealing with increasing demand for water to satisfy the growing needs of agriculture and population. This basin lies in the fractured and crystalline formations of the Ifni buttonhole, which is part of the western Anti-Atlas range [6,7]. In hydrological terms, it experiences heavy floods that bring significant volumes of surface water, which could be mobilized [8,9].…”

Section: Introductionmentioning

confidence: 99%

Delineation of Groundwater Potential Area using an AHP, Remote Sensing, and GIS Techniques in the Ifni Basin, Western Anti-Atlas, Morocco

Ikirri

Boutaleb

Ibraheem

et al. 2023

Water

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An assessment of potential groundwater areas in the Ifni basin, located in the western Anti-Atlas range of Morocco, was conducted based on a multicriteria analytical approach that integrated a set of geomorphological and hydroclimatic factors influencing the availability of this resource. This approach involved the use of geographic information systems (GIS) and hierarchical analytical process (AHP) models. Different factors were classified and weighted according to their contribution to and impact on groundwater reserves. Their normalized weights were evaluated using a pairwise comparison matrix. Four classes of potentiality emerged: very high, high, moderate, and low, occupying 15.22%, 20.17%, 30.96%, and 33.65%, respectively, of the basin’s area. A groundwater potential map (GWPA) was validated by comparison with data from 134 existing water points using a receiver operating characteristic (ROC) curve. The AUC was calculated at 80%, indicating the good predictive accuracy of the AHP method. These results will enable water operators to select favorable sites with a high groundwater potential.

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“…De nombreuses études pétro-structurales, géochronologiques, géochimiques et géophysiques ont montré que le Paléoprotérozoïque est une période charnière dans l'évolution de la croûte terrestre (Barbey et Raith, 1990 ;Lucas et al, 1994 ;Hajnal et al, 1995 ;Vidal et al, 1996 ;Pons et al, 1995 ;Vidal et al, 1996 ;Mortaji et al, 2000). Les caractères archaïques y sont bien marqués, mais de plus en plus d'études révèleraient l'existence d'autres caractères se rapprochant de ceux des chaînes modernes.…”

Section: Introductionunclassified

Petrographie Des Volcanites Et Plutonites De La Partie Sud Du Sillon Volcano-Sedimentaire De Toumodi-Fetekro (Cote D’ivoire)

Inza

Nicaise

Chérubin

et al. 2017

ESJ

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The southern part of Toumodi-Fètêkro greenstone belt is located in the Center -Southeast of Ivory Coast. Petrographic study of volcanic and plutonic rocks shows three units. The first unit is composed of basaltic to rhyolitic lavas which imply effusive character. Then we have volcanosedimentary unit composed of pyroclastic formations (lapilli tuff, breccia, ash deposit and ignimbrites) and the pillow-lavas. Indeed, the presence of this last shows clearly that an explosive volcanism and a submarine effusive volcanism have occurred during during the setting of Toumodi-Fètêkro belt. Plutonic unit is constituted of gabbroic to granitic rocks. Sericite, chlorite, epidote observed in these rocks are consistent with the impacts of greenschist facies metamorphism. The rocks of the southern part of the Toumodi-Fètêkro greenstone belt are formed in a subduction context rather than in oceanic plateaus context because of the old inheritance, sometimes of Archean age, found somewhere in theBirimiandomain. The lithologies of the southern part of Toumodi-Fètêkro meet elsewhere in the other Birimian greenstone belts. Also, these lithologies are affected by a hydrothermal alteration due to the abundant veins of quartz, carbonates, sericite, chlorite, epidote, sulphides and oxides. However, volcanic show in some places amphibolit facies metamorphism. Keywords

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

Cited by 10 publications

References 41 publications

Machine Learning Algorithms for Automatic Lithological Mapping Using Remote Sensing Data: A Case Study from Souk Arbaa Sahel, Sidi Ifni Inlier, Western Anti-Atlas, Morocco

Machine Learning Algorithms for Automatic Lithological Mapping Using Remote Sensing Data: A Case Study from Souk Arbaa Sahel, Sidi Ifni Inlier, Western Anti-Atlas, Morocco

Delineation of Groundwater Potential Area using an AHP, Remote Sensing, and GIS Techniques in the Ifni Basin, Western Anti-Atlas, Morocco

Petrographie Des Volcanites Et Plutonites De La Partie Sud Du Sillon Volcano-Sedimentaire De Toumodi-Fetekro (Cote D’ivoire)

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