Resumen de Evolución tectosedimentaria de la Cuenca de Almazán durante el Paleógeno

Adolfo Maestro González, Antonio María Casas Sáinz, Ángel Luis Cortés Gracia

• The Almazan Basin is a compressional basin located within the Iberian Chain. During the Tertiary (Late Eocene-Early Miocene) the Almazan Basin, with an overall synclinal geometry, was filled with syn-tectonic terrestrial sediments, reaching a maximum thickness of 3.500 m. The Paleogene to Lower Miocene sediments are arranged in four tectonosedimentary units, bounded by unconformities at the basin borders. The depocenter of the Tertiary basin migrated southward during the Paleogene from the present-day northern margin to the basin centre. This migration is consistent with a transport of the whole basin northward, due to the movement on the underlying, crustal-scale north-verging Cameros thrust.