RESULTADOS PALEOMAGNÉTICOS Y DE MAGNETOFÁBRICA PRELIMINARES EN EL INRUSIVO DON JUAN, OLAVARRIA, PROVINCIA DE BUENOS AIRES, ARGENTINA

FRANCESCHINIS, PABLO R.; RAPALINI, AUGUSTO E.; POIRÉ, DANIEL G.; CORIALE, NELSON; ARROUY, MARÍA JULIA; GÓMEZ PERAL, LUCÍA

LatinMag Letters

Universidad Nacional Autónoma de México

Año: 2013 vol. 3 p. 1 - 4

2007-9656

Results from a preliminary paleomagnetic and magnetofabric study on four sites located in a poorly exposed intrusive body (Don Juan intrusive) of uncertain age and its encassing lithology, the migmatites of the Buenos Aires Complex are presented. The study was carried out near the city of Olavarria in the extreme NW of the Tandilia System. The magnetic fabric of the two sites on the intrusive permitted to infer that the intrusive is probably one or several subvertical dykes with an ENE-WSW trend. The paleomagnetic study yielded well defined mean directions for both sites on the dykes pointing S to SW and with very shallow inclinations. On the other hand the Buenos Aires Complex yielded well grouped and steep directions with positive inclinations.