Estudio de la Orientación Cristalográfica prefernte del Cuarzo en el Contacto entre Gneises y Metatexitas-Diatexitas del Macizo Cerro Pelado (Sierra de Comechingones, Argentina)
- P. Castellarini
- C. Fernández
- J. Otamendi
ISSN: 0213-683X
Datum der Publikation: 2003
Nummer: 35
Seiten: 67-69
Art: Artikel
Andere Publikationen in: Geogaceta
Zusammenfassung
The quartz e-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.