The Hercynian ore deposits from the Catalonian Coastal Ranges

reservas, similares procesos metalogenéticos habrian actuado en el Paleozoico Inferior del Brea. La deformación y el metamorfisme regional hercinicos no han actuado en este sector como un importante reconcentrador de menas, y la mayor parte de indicios epigenéticos Many mineralizations, showings and geochemical anomalies de edad tardihercinicaestán relacionados alas células hidrotermales have been found in the Hercynian of the Catalonian Coastal Ranges inducidas por las intrusiones graniticas p~st-metamÓrfica~. during the last ten years. Many of them are enclosed in the Paleozoic sediments and volcanics and display pre-metamorphic syngenetic characteristics. ~h~ lower carboniferous manganese Palabras clave: Sedex. Metales-base. Metalogenia. Hercinico. and base meta1 deposits appear to be formed from hydrothermal extensional. fluids springing up in the sea floor through active fractures controlling the filling of the basins in aextensional geotectonic setting. Although less evidence and more controversy is available, similar ore forming processes could have taken place in older Paleozoic times. The deformation and metamorphism have not played an important remobilization role, and most epigenetic deposits of Hercynian age INTRODUCTION are related to the hydrothermal cells induced by the post-metamorphic granitic intrusives. The Hercynian materials of the Catalonian Coastal