Colonias de corales y facies oncolíticas en el Dogger de las sierras de Cabra y Puente Genil (Subbético externo, provincia de Córdoba)

Abstract

The presence of coral colonies and oncoid facies in the Dogger of the External Subbetic is first shown in this paper. It is worthy of remark that the Dogger materials (ooid limestones basically) are placed between pelagic formations. Really, they represent a part of a shallowing-upward sequence which beging with the pelagic sediments of the DomerianToarcian. Over these materials a shallow carbonate shelf is established where biohenns, coral colonies, oncoid and ooid facies are developed, caping the sequence a hard-ground of the Upper Bathonian. The Upper Jurassic materials are clearly pelagic with "ammonitico rosso" facies. This work represents a contribution to the scientific controversy about the interpretation of the ooid limestones of the Dogger. In other areas (Venetian Alps, Balearic Islands, etc.), these limestones have been interpreted as deep redeposited sediments and attempts to extend this interpretation to all the Dogger ooid limestones of the Alpine realm have been made. The features shown in this paper about the shallow marine nature of these materials in the External Subbetic are conclusives.