Revisión estratigráfica del intervalo Kimmeridgiense medio-Tithonico basal en el perfil G10 del sector de Venta Quesada (Sierra Gorda, provincia de Granada)

Abstract

The updated stratigraphic revision of Middle Kimmeridgian - lowermost Tithonian ammonitico rosso in the Gw section at the sector of Venta Quesada (Sierra Corda, Internal Subbetic, southern Spain) enables the evaluation of stratigraphic completeness through taphonomic analysis of new collected fossil assemblages, mainly ammonites. Even in a context of low sedimentation rate, ammonite biostratigraphy proved to be accurate resulting in the recognition of the Compsum, Cávourí, Beckeri and Hybonotum Zones. The subdivision of the Beckeri Zone (Upper Kimmeridgian) in the biohorizons of pressulum, knopi-pressulum, beckeri-pressulum and beckeri provides the most complete subdivision of the Beckeri Zone hitherto proposed