Edad y origen de la fluorita del yacimiento de La Nueva (Cabalango, Córdoba, Argentina) en base a geoquímica de isótopos radiogénicos (Nd y Sr).

• Autores: Carmen Galindo Francisco, Edgardo g. Baldo, Robert John Pankhurst, César Casquet Martín, Carlos Washington Rapela, Julio Saavedra Alonso
• Localización: Geogaceta, ISSN 0213-683X, Nº. 19, 1995, págs. 67-70
• Idioma: español
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• Resumen

  • The fluorite mineralization from the La Nueva Mine, has a S m-Nd age of 130±19 Ma, and thus must be related to the Lower Cretaceous late -Gondwanic extensional and magmatic event that affected the Sierras Pampeanas Basement of Argentina. Hydrothermal fluids involved in the formation of fluorite were probably derived by mixing of two fluids , an ascending high B7Sr/86Sr one, probably equilibrated with basement metamorphics, as suggested by the very negative ENd(130) values, and a second, «descending», with a low B7Sr/86Sr value