Sistemes hidrotermals associats a mineralitzacions de PB-ZN. Estudi comparatiu entre exemples en el sòco20l paleozoic de Portugal i Espanya

In the present prouject we pretend to:1) characterize the hydrothermal paleosystem responsible for the formation of Pb-Zn mineralizations of Várzea de Trevoes and Olgas (N of Portugal) from the study of the associates fluids; 2) compare the formation conditions (p,T) of the ores as well as teh origin and composition of the fluids with the data from other apparently similar deposits in Spain; 3) model the transport and precipitation mechanisms of minerals and 4) evaluate a tentative age of hydrothermal events