Permian-Triassic boundary Argentina 10 South America 10 paleomagnetism 10 remagnetization 8 Mendoza 6 magnetic reversal 6 La Rioja [Argentina] 5 Angostura 4 Brazil 4 Cambrian 4 Carbonates 4 Cratons 4 Dom Feliciano Belt 4 Ediacaran 4 Palaeomagnetism applied to tectonics 4 Paleomagnetism 4 Permian 4 Precordillera 4 Proterozoic 4 Punta del Este 4 Remagnetization 4 Rio Grande do Sul 4 Rio de la Plata 4 San Rafael Massif 4 San rafael 4 SouthAmerica 4 Uruguay 4 apparent polar wander path 4 carbonate 4