publication . Article . 2003

Estudio de la Orientación Cristalográfica Preferente del Cuarzo en el Contacto entre Gneises y Metatexitas - Diatexitas del Macizo Cerro Pelado (Sierra de Comechingones, Argentina)

Castellarlni, P.; Fernández Rodríguez, Carlos; Otamendi, Juan E.;
Open Access Spanish; Castilian
  • Published: 01 Jan 2003
  • Publisher: Sociedad Geológica de España
  • Country: Spain
Abstract
The quartz c-axis fabrics measured in the rocks of the high-grade unit of the Cerro Pelado massif (northern Sierra de Comechingones, Sierras Pampeanas, Argentina) allow to deduce a normal-sinistral sense of movement for the south-dipping shear zone separating the diatexite-metatexite domain to the north, from the gneissic terrane to the south. The crystallographic fabrics also indicate that the activity of this shear zone took place under high-T conditions. The deduced kinematics can account for the syn-metamorphic exhumation of the migmatite domain
Subjects
free text keywords: Quartz c-axis fabrics, Migmatites, Sierra de Comechingones, Argentina
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