The pervasive Sanrafaelic remagnetization in carbonates: rock magnetic study on samples from the La Flecha Formation (La Rioja Province, Argentine Precordillera)

FAZZITO, S.; RAPALINI, A.E.; GEUNA, S.E.; POIRÉ, D.

Congreso; Sexta Reunión Bienal de la Asociación Latinoamericana de Paleomagnetismo y Geomagnetismo; 2019

Universidad de O´Higgins

Rock-magnetic experiments, petrographic studies and X-ray diffraction analyses were applied on remagnetized carbonates from the Upper Cambrian La Flecha Formation (Quebrada La Angostura, Precordillera de La Rioja, Argentina) carrying a pre-tectonic Permian secondary magnetization with the aim to extend the knowledge of the widespread Sanrafaelic overprint which affected most of the early Cambrian to mid-Ordovician units of the Argentine Precordillera and the San Rafael Block