greenschist facies Argentina 10 metamorphism 10 Precordillera 6 South America 6 Breccias 4 Devonian 4 Fault rocks 4 Microbreccia cohesive 4 Precambrian 4 Sierras Australes 4 Sierras Septentrionales 4 Sierras de Buenos Aires 4 breccia 4 deformation mechanism 4 extensional tectonics 4 fault zone 4 faulting 4 mafic rock 4 outcrop 4 protolith 4 quartzite 4 tectonic setting 4 ultramafic rock 4 Buenos Aires [Argentina] 3 Argentina, Cordillera Neuquina 2 CAI 2 Clay mineralogy 2 Conodont 2 Contact metamorphism 2