Tarek BEN FRAJ, Université de Sousse, Faculté des lettres et des Sciences Humaines de Sousse et Université de Tunis, Laboratoire CGMED, Tunisia
Aziza GHRAM MESSEDI, Université de Tunis, Faculté des Sciences Humaines et Sociales de Tunis et Laboratoire CGMED, Tunisia
Hédi BEN OUEZDOU, Université de Tunis, Faculté des Sciences Humaines et Sociales de Tunis et Laboratoire CGMED, Tunisia
Emmanuel REYNARD, Université de Lausanne, Institut de géographie et durabilité et Centre interdisciplinaire de recherche sur la montagne, Switzerland
Mohamed OUAJA, Université de Gabès, Faculté des Sciences, Tunisia
Abstract
In the framework of the "Destination Djebel Dahar" Project in Southeastern Tunisia for the establishment of a Destination Management Organization (DMO) Dahar (Ben Ouezdou et al. 2016) and the elaboration of a roadmap for the creation of a UNESCO Global Geopark in the Dahar (Reynard et al. 2022), an inventory of geoheritage sites has shown the richness of this region in various sites, including geocultural sites that combine high cultural and geological heritage value (Reynard and Giusti, 2018). Through five examples of this type of site, this work demonstrates the importance of the interweaving of temporal scales, from geological time to the present day, in order to better conserve and interpret these sites in the context of their promotion.
In these sites, the chronology passes from the geological scale, represented by the lithological varieties that allowed the structural forms (cuestas) to be shaped, to the Quaternary scale represented by a variety of deposits and forms. In these first two scales, there is the historical scale represented by different aspects of human occupation (dwellings, Ksour (granaries), Kalaa (fortresses), Jessour (hydraulic dams) and the scale of current dynamics linked, first of all, to the socio-economic changes (emigration, agricultural abandonment) that the region has undergone in recent decades (Ben Fraj et al. 2019).
The analysis of these interrelationships allows a better understanding of the construction of these landscapes from geological times to their perception by human societies that have adapted to their characteristics. It also makes it possible to identify the current evolution of these landscapes in the context of global changes, which is essential for any geoconservation procedure. Taking into account the interweaving of temporal scales facilitates the interpretation of these sites.
Mots clés : Dahar|Geoheritage|Geocultural sites|Time scales|Valorization
A105295TB