Evolución de los paleoesfuerzos en Iberia desde el Carbonífero superior a la actualidad

Abstract

Three main stages are differentiated in Iberia from the Late Carboniferous to the Present: a Late Variscan fracturing stage (Late Carboniferous), the Permian-Lower Cretaceous rifting and the Alpine orogeny (Late Cretaceous to Present). The Late Variscan fracturing stage was associated with a transcurrent regime with NE-SW compression. There are only palaeostresses data for the Upper Jurassic-Lower Cretaceous rifting stage and they correspond with a radial extensión for the whole of the Iberian Peninsula. During most of the Palaeogene, the Alpine Orogeny was asssociated with several stress fields, although a N-S to NNE-SSW compresión related with the collision between Europe and Iberia dominated. The collision between Europe, Africa and the Internal Zones of the Betic Cordillera occurred from the Neogene to the present-day, incluiding a NW-SE compression. Regions with extensional stresses also existed in the eastern margin of Iberia and the Alboran Sea.