Resumen de Costras ferromanganesíferas pelágicas inducidas por comunidades bentónicas microbianas en el límite Jurásico Medio-Superior (Subbçetico Externo, provincia de Córdoba)
José Miguel Molina Cámara, Matías Reolid
A hardground with Fe-Mn crusts of an important Middle-Upper Jurassic stratigraphic discontinuity in the External Subbetic has been analysed. These are mainly hydrogenetic-biogenic crusts induced by the activity of benthic microbial communities. The main organisms realted with the Fe-Mn mineralization are probably fungi. The pelagic swells of the External Subbetic were a favourable environment for the development of authigenic mineralizations mainly by a very low rate of sedimentation and the existence of submarine volcanic processes in the neighboring Median Subbetic.
