From Geoheritage to Geosites at the Oeste Aspiring Geopark (Portugal)

Abstract

Geoheritage and geosites have been assessed as part of the work supporting the application of the Oeste Aspiring Geopark, in West Central Portugal, for an UNESCO Global Geopark. The geological framework is presented, describing the regional evolution of the Lusitanian Basin, related to the Mesozoic opening of the North Atlantic, since the Late Triassic until the Late Cretaceous, followed by the Cenozoic inversion of the basin, related to the Alpine orogeny. The overall geodiversity of the territory is described, and the main geological highlights are presented.Within the scope and objectives of a Geopark, the criteria for the definition of geosites are presented and discussed. Geoconservation, geoeducation and geotourism have been considered to define 80 geosites, with different characteristics, purposes, relevance and potential. Six different encompassing themes have been defined, each one with a specific storytelling. Geoconservation issues are also addressed, showing the importance of protection strategies for the geosites at a local scale.