What is the geology like on the Costa Brava?
I haven’t found a specific non technical source that describes the geology but here are some clippings and the links to where they came from. Apparently it is a microcosm of a vast sampling of geological history but specifics are not easy to come by. The coast line seems to be a result of a shallow sloping flat plain of resistant metamorphic rocks that plunges to the southeast. Bounded by the Pyrenes Mountains to the north and recently deposited gravels onto that plain to the northwest. This plain is a monocline that extends under Majorka. See Valencia Trough and Channel below. The region is given over to many major landslides as the loose sediment to the northwest flows over the Coasta Brava coast into the trough. Owing to its long and complicated geological history there are a multitude of geological formations and processes exposed in this region. However the governing contribution to the shape of the coast appears to be the aforementioned exposure of resistant metamorphic shists an
