Emmanuel REYNARD, Université de Lausanne, Switzerland
The Sanetsch area is located in the Western Swiss Alps. It is characterized by impressive structural landforms (nappes) in a limestone context (Schoeneich and Reynard, 2021), by the presence of well-studied glacio-karst listed in the inventory of Swiss geosites (Reynard, 2008), and a great diversity of glacial, paraglacial and periglacial deposits, processes and landforms that document the history of deglaciation and present morphogenesis. The whole constitutes a geomorphological landscape (Reynard, 2005) with a wide range of karstic, glacial, periglacial, gravity and fluvial landforms covering more than 20 square kilometres. The region has already been the subject of several scientific dissemination initiatives in the field of climate and geomorphology (educational trail, educational panels, geotourism map).
The poster proposes an analysis to understand the spatial and temporal imbrications in a process of evaluation and promotion of geoheritage on a regional scale. The procedure consists in several steps: (i) geomorphological mapping; (ii) spatial differentiation into particular and "homogeneous" geomorphological units; (iii) description of these units in terms of morphogenesis (types of processes involved), geomorphological history and current morphogenesis; (iv) proposals for interpretation.
For the interpretation, particular attention is paid to the double interweaving of temporal and spatial scales. The aim is: (i) to relate the regional geological and geomorphological history to alpine and global tectonics; (ii) for current morphogenesis, to make it possible to understand the links between general trends (climate change, glacial recession) and specific phenomena (rockfalls due to the permafrost melting); (iii) to understand the links between the geological/geomorphological history and human activities (agriculture, tourism, exploitation of the resources) in the area.
Keywords: geoheritage|glacio-karst|assessment|interpretation|Sanetsch (Switzerland)
A105079ER