Providencia – Final Approbal
La Providencia is an epithermal deposit of silver, lead, copper and zinc lodged in conglomerate sediments of quaternary (Conglomerate La Providencia, Peralta and Sureda, 1992. Pleistocene), which overlie tectonic contact with red sediments of Pastos Grandes group (Sijes Formation) of the Upper Tertiary. The latter rely on unconformity on the Ordovician pelites and wackes of…