Crystallization Conditions and Petrogenetic Characterization of Metaluminous to Peraluminous Calc-Alkaline Orogenic Granitoids from Mineralogical Systematics: The Case of the Cambrian Magmatism from the Sierra de Guasayán (Argentina)

ZANDOMENI, P.; MORENO, J.A.; VERDECCHIA, S.; BALDO, E.; DAHLQUIST, J.A.; MORALES CÁMERA, M.M.; BALBIS, C.; BENÍTEZ, M.; SERRA-VARELA, S.; LEMBO WUEST, C.I.

Minerals

MDPI

Lugar: Basel; Año: 2021 vol. 166 p. 1 - 21

2075-163X

The Sierra de Guasayán (Eastern Sierras Pampeanas, Argentina) is formed by low tomedium grade metamorphic rocks intruded by Cambrian metaluminous (La Soledad quartz-diorite),slightly peraluminous (Guasayán, El Escondido and El Martirizado granodiorite plutons), andstrongly peraluminous (Alto Bello granodiorite) granitoids of the Pampean magmatic arc. Chemicalcompositions of amphibole, plagioclase, biotite, and titanite indicate that these granitoids wereemplaced at low pressure (mostly < 3 kbar) and temperature (