Área Nuevo Oro, evidencias de un ambiente Hot Spring vinculado a depósitos epitermales en el sector centro-norte del Macizo del Deseado, Santa Cruz, Argentina.

RUIZ, REMIGIO; GUIDO, DIEGO; PAEZ, GERARDO; JOVIC, SEBASTIÁN; MONGAN, MARIANO; BRIVIDORO, PATRICIO

Avances en mineralogía, metalogenia y petrología 2010

Editorial Fundación Universidad Nacional de Río cuarto

Lugar: Río cuarto, Cordoba; Año: 2010; p. 221 - 226

The Nuevo Oro District is located in the north-central part of Deseado Massif, in Santa Cruz province, Argentina. The geology is characterized by a middle to upper Jurassic volcaniclastic complex, composed by acidic volcaniclastic rocks with intermediate lavas associated, which hosted two mineralization structures with Au anomalies and several manifestations of Hot Spring environment represented by siliceous and calcareous deposits associated with fluvio-lacustrine sediments. The development of NW-SE quartz veinlets with vein-breccia textures, the progressively increase in Au contents and a change in outcrop pattern from veins to floats from the northwest to the southeast, added to the spatial and the probably genetically relationship with the extended levels of hot spring deposits, suggests a shallow level of exposures within the epithermal environment. The association between Hot Spring environments with fluvio-lacustrine sediments and the epithermal deposits in the Deseado Massif province confirms the importance that thesemanifestations possess as valuable predictive tools in mining exploration.