Datación Ar39 / Ar40 de mineralizaciones de mercurio de Sinclinalde Almadén.

• Localización: Geogaceta, ISSN 0213-683X, Nº. 20, 2, 1996, págs. 483-486
• Idioma: español
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  • Mercury mineralizations in the Almaden district can be grouped in two main categories: i) strata-bound mineralizations hosted in Criadero quartzite (Lower Silurian) and ii) veins and stockworks in Silurian and Devonian hosting rocks. The 39Ar/40Ar dating of illite, probably related with the hydrothermal activity responsible of the second type of mineralizations, yields 361 ± 2 Ma. This age is some 25-50 Ma older than the age of granitic intrusions in the area, and could be the age of the epigenetic mercury mineralizations