Revista de la Asociación Geológica Argentina
versión On-line ISSN 1851-8249
DEBRODTKORB, MilkaK.; PEZZUTTI, Norma; POMA, Stella y FERNANDEZ, Raúl. Geochemistry and petrology of the Cambrianmetavolcanic rocks of the Sierra de San Luis. Rev. Asoc. Geol. Argent. [online]. 2009, vol.65, n.3, pp. 429-445. ISSN 1851-8249.
Acid metavolcanic rocks of Cambrian age are studied in twolow-grade metamorphic belts. Petrografic and chemical analyses and theirgeotectonic possition are analyzed. There are synsedimentary pyroclastic flows(and lavas?) and sedimentary deposits, metamorfosed to greenschist andamfibolite facies during the Famatinian cycle. The occurrence of scheelitic(Au, Sb, Bi) mineralizations associated nearby with exhalites such asturmalinites and coticule, are described and linked to a volcanogenic -hydrothermal event with exhalative expressions.
Palabras clave : Sierras Pampeanas Orientales; Sierra of San Luis; Metavolcanic rocks; Exhalites; Scheelite.