Aerial interference of Hercynian folds and their morphological peculiarities in the Bani Geopark of southern Morocco
- PDF / 4,572,690 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 66 Downloads / 165 Views
ORIGINAL PAPER
Aerial interference of Hercynian folds and their morphological peculiarities in the Bani Geopark of southern Morocco Sanae Berred 1
&
Driss Fadli 1 & Khadija Berred 2
Received: 12 September 2018 / Accepted: 16 May 2019 / Published online: 25 May 2019 # Saudi Society for Geosciences 2019
Abstract The Bani Geopark of southern Morocco belongs to the chain of Anti-Atlas; it is characterized by a very heterogeneous ductile deformation, materialized by the succession of two Hercynian folding phases. The latter were controlled by Precambrian basement fractures that played into normal faults that replayed in reverse faults at the end of the Hercynian orogeny. It will be shown that this adaptation of the base to the cover propagates and amortizes laterally and vertically, giving rise to a very heterogeneous deformation. In the Tata-Akka region, the interference of these two phases of folding is spectacular in aerial view. In several places, it has generated structural patterns, some of which are known as Begg tray,^ which show a great diversity of relief shapes after erosion processes. Other interference patterns recall the shape of mushrooms belonging to the second type according to the Ramsay classification. Of these facts, it presents a scientific interest for the researchers, esthetic for the geotourism, and educational in the field of Earth sciences. In this work, we will first highlight the general characteristics of the two phases of folding in the Tata-Akka area; then, we will try, through a scientific mediation, in a tourist perspective, to understand the origin, singularity, and value of forms of relief involved in this type of deformation. It is also a question of showing the pedagogical integration concerning the close relations between the folded geological structure and the formation of relief in the potential tourist circuits of the Bani Geopark of southern Morocco. Keywords Southern Morocco . Anti-Atlas . Bani Geopark . Fold interference . Geomorphosites . Scientific mediation
Introduction As part of the Anti-Atlas of Morocco, the region of Tata-Akka (Fig. 1) occupies the eastern part of the Western Anti-Atlas. Located east of the Precambrian Massif of Kerdous, it is limited to the North by Ighrem inlier, to the West by Kerdous inlier and to the East to the South by Draa plain. This area consists of a Precambrian basement, reported in the Mesoproterozoic (Ikenne 2017) and Neoproterozoic (PanAfrican Orogeny), Paleoproterozoic (Eburnian Orogeny), and Editorial handling: Eugenio Fazio * Sanae Berred [email protected] 1
Faculty of Sciences Rabat, Laboratory of Geoscience, Water and Environment, Mohammed V University, Rabat, Morocco
2
Faculty of Sciences Rabat, Tourism Engineering Laboratory, Heritage and Sustainable Development of the Territories, Mohammed V University, Rabat, Morocco
Proterozoic sedimentary cover that unconformable rests on the basement, attributed to the late Neoproterozoic and basal Cambrian, and finally the Paleozoic cover structured during the Hercynian orogeny,
Data Loading...
