Harmouzi, H. and Dekayir, A. and Rouai, M. and Afechkar, M. (2018) Geomorphological and geological analysis of akchour landslide (Rif, Morocco). Analyse géomorphologique et géologique du glissement de terrain d’Akchour (Rif, maroc). Geo-Eco-Trop, 42 (1). pp. 19-31.

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Abstract

Natural hazards have become increasingly intense as a result of human impacts and climate change. The Rif chain in northern Morocco is known as a landslide prone area due to hilly slopes, alpine geology and climatic conditions. These conditions make the region highly vulnerable to landslides and thus constitute a real threat to the local population and socio-economic activity. The present work deals with the case of an important landslide in the area known as "Taourart-Akchour", located 9 km from Chefchaouen town. This landslide occurred after the heavy winter rainfall of 2010. The damage was considerable without loss of human life fortunately. The superposition of limestone formations and marls, combined with a slope of 19, favored the sliding. Indeed, its structure established from remote sensing, shows that this is a complex rotational sliding in context of a thrust nappe. The results of the grain size and mineralogical analyzes of the samples taken from the sliding surface suggest that the presence of clay minerals allowed the triggering of the landslide. The climatic conditions and the energy of the relief are also factors of triggering mass movements. © 2018 Geo-Eco-Trop. All rights reserved.

Item Type: Article
Uncontrolled Keywords: cartography; clay mineral; geological survey; geomorphological response; grain size; hazard assessment; landslide; limestone; marl; nappe; precipitation intensity; remote sensing; sliding; thrust, Morocco; Oriental; Rif; Taourirt
Subjects: Earth and Planetary Sciences
Divisions: SCIENTIFIC PRODUCTION > Earth and Planetary Sciences
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:46
URI: http://eprints.umi.ac.ma/id/eprint/2845

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