Abstract

DE BARRIO, Raúl E et al. Nuevos datos y esquemas genéticos de los depósitos barítico-celestínicos vinculados a la secuencia jurásico-cretácica de la cuenca Neuquina en la provincia del Neuquén. Rev. Asoc. Geol. Argent. [online]. 2014, vol.71, n.2, pp.184-200. ISSN 0004-4822.

The Neuquén Basin represents one of the more significant examples in Argentina where several marine carbonate-evaporite and continental cycles were developed during the Jurassic-Cretaceous. Numerous Ba-Sr stratabound deposits are closely associated with the carbonate and gypsum horizons of several stratigraphic units, as the result of different mineralizing processes: sedimentary-exhalative deposition onto the seafloor, selected replacements of carbonate rocks and gypsum beds with subsequent diagenetic processes and hydrothermal infilling of fractures, voids and vugs. The Ba-Sr mineralizations are mainly epigenetic, and they are related to hydrothermal fluids that occurred in areas with or without igneous rock outcrops.

Keywords : Ba-Sr ore deposits; Jurassic-Cretaceous; Metallogeny; Neuquén Province; Argentina.

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