CIG   05423
CENTRO DE INVESTIGACIONES GEOLOGICAS
Unidad Ejecutora - UE
artículos
Título:
The north Patagonian Altiplano and the Somon Cura basaltic Plateau
Autor/es:
ARAGÓN, E; AGUILERA YOLANDA; CAVAROZZI, CLAUDIA; RIBOT A.
Revista:
REVISTA DE GEOCIENCIAS (UNESP)
Editorial:
UNESP
Referencias:
Lugar: Sao Paulo; Año: 2010 vol. 29 p. 527 - 532
ISSN:
0101-9082
Resumen:
For some time it has been considered that the Somón Curá basaltic plateau, at the edge of the Northpatagonian Massif, was originated by inversion of relief. Recent observations allowed the hypothesis that the generation of  the North Patagonian altiplano or plateau precedes the basaltic flows of the Somún Curá plateau. The  Roca Formation marine sediments are used as a guide stratum to reconstruct the uplift history of the North Patagonian Massif. It is proposed that the 100,000 km2 Cretaceous planation surface of the North Patagonian Massif was uplifted in early Oligocene times, and that the 15,000 km2 of basalts that erupted on its surface immediately after (Oligocene-early Miocene) may be related to the same processes that led to the uplift.