Tectonic styles in the Marrakesh High Atlas (Morocco): The role of heritage and mechanical stratigraphy

2007 ◽  
Vol 48 (4) ◽  
pp. 247-266 ◽  
Author(s):  
Yves Missenard ◽  
Zouhair Taki ◽  
Dominique Frizon de Lamotte ◽  
Mohamed Benammi ◽  
Mohamad Hafid ◽  
...  
Author(s):  
Rizki Mohamed

The Tagueleft basin is geographically located in the northern edges of the Middle High Atlas, which is a geomorphological fragile area. The impact of human activity has accelerated water erosion in this mountains area. This is reflected in dynamic and unstable foothills, a decrease in forests density and degradation in the production of the land. On the other hand, land degradation due to human overexploitation of natural resources has increased land degradation in the area. The interest in the risk of erosion on the foothills in the area under study comes in the context of our contribution to clarify the role of geomatical and geomorphological approaches in explaining and identifying the mechanisms responsible for current foothills dynamism through water erosion and its negative impacts on the environment and local development. The aim of the study was to use the EPM (Erosion Potential Méthod) which is formulated by Slobodan Gavrilovic for erosion in mountainous areas and to test the reliability of its results based on fieldwork and remote sensing data. The results of the erosion assessment and its quantification by applying the coefficient (W) for the theoretical model in the area under study have shown that erosion is very important and it touches on wide areas as it appears through the domain classification of the distribution erosion in Tagueleft basin.


Tectonics ◽  
2012 ◽  
Vol 31 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Julien Babault ◽  
Jean Van Den Driessche ◽  
Antonio Teixell

2015 ◽  
Vol 118 ◽  
pp. 283-289 ◽  
Author(s):  
Lahcen Daoudi ◽  
Abdelouahab Knidiri ◽  
Hicham El Boudour El Idrissi ◽  
Benaissa Rhouta ◽  
Nathalie Fagel

2018 ◽  
Vol 9 (5) ◽  
pp. 1451-1464 ◽  
Author(s):  
Hyunjung Lee ◽  
Yirang Jang ◽  
Sanghoon Kwon ◽  
Myong-Ho Park ◽  
Gautam Mitra

Clay Minerals ◽  
2003 ◽  
Vol 38 (3) ◽  
pp. 361-365 ◽  
Author(s):  
S. Kacim ◽  
M. Hajjaji

AbstractThe firing transformations of a Triassic calcareous clay were investigated, in the range 800 –1075ºC, by using X-ray diffraction and by measuring some ceramic properties (linear shrinkage, density and porosity). It was found that gehlenite and wollastonite are the only neoformed crystalline phases, when anorthite is also expected. The occurrence of these phases is discussed, emphasizing the role of the activity of free silica and calcite concentration. Moreover, new reaction paths for anorthite and wollastonite are envisaged.


2021 ◽  
Vol 240 ◽  
pp. 04001
Author(s):  
Abdelouhed Farah ◽  
Ahmed Algouti ◽  
Abdellah Algouti ◽  
Fatiha Hadach ◽  
zahra Mourabit

The study area belongs to the southern edge of the central High Atlas. It is limited to the North by the Sub-atlasic accident and to the South by the extension of the Eastern Anti Atlas formations. To determine the depositional environments of the Senonian series, a sedimentological analysis of the facies was carried out based on field observations by the recognition of sedimentary structures and textures. An exoscopic analysis of the quartz grains was also carried out by a systematic prospecting of the grain relief and of all the characters that will appear on the surface of the grain after the formation of the mother rock at the origin place, during transport, immobilization phases and deposition. It seems very interesting to prospect for the clayey side in these Upper Cretaceous reddish formations because the evolution of the clayey and non-clayey assemblages in this central basin of the High Atlas will depend mainly on the combination of tectonic, eustatic, climatic and other influences. The Senonian of Foum El Kous which has a less important thickness corresponds to continental deposits that act the role of a natural barrier that separates on both sides the two sub-basins: Sidi Ali Oubork in the East and Ait youl in the West.


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