RT Journal Article T1 Costras ferromanganesíferas pelágicas inducidas por comunidades bentónicas microbianas en el límite Jurásico Medio-Superior (Subbético Externo, provincia de Córdoba) T1 Pelagic Fe-Mn crusts induced by benthic microbial communities in the Middle-Upper Jurassic boundary(External Subbetic, Cordoba province) A1 Molina, José Miguel A1 Reolid, Matías AB 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 related with the Fe-Mn mineralization are probably fungi. The pelagic swells of the External Subbetic were a favourable environment for the development ofauthigenic mineralizations mainly by a very low rate of sedimentation and the existence of submarine volcanic processes in the neighboring Median Subbetic YR 2010 FD 2010 LK http://hdl.handle.net/10272/7851 UL http://hdl.handle.net/10272/7851 LA spa DS Repositorio Institucional de la Universidad de Huelva RD 15 jun 2026