The North Patagonian Massif or Somún Cura Massif (Spanish: Macizo Norpatagónico, Macizo Nordpatagónico or Macizo de Somún Cura) is a massif in northern Patagonia located in the Argentine provinces of Río Negro and Chubut. The massif is a plateau surrounded by sedimentary basins. The North Patagonian Massif covers an area of approximately 100,000 km2. The massif rises 500 to 700 meters above the surrounding topography reaching a total of 1200 m.a.s.l. Compared to neighboring areas the North Patagonian Massif has thicker continental crust.
References
North Patagonian Massif Wikipedia(Text) CC BY-SA