IDEAN   23403
INSTITUTO DE ESTUDIOS ANDINOS "DON PABLO GROEBER"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Tectonic evolution of the Southern Andes in the last 100 My
Autor/es:
FOLGUERA, ANDRES; LITVAK, VANESA D.; SPAGNUOLO, MAURO G.; ORTS, DARÍO; ROJAS VERA, EMILIO; RAMOS, VICTOR A.
Lugar:
Pucón
Reunión:
Simposio; Volatiles and Fluids in Subduction Zones; 2010
Resumen:
Southern Andean evolution has been governed in the last 100 Ma by changes in slab steepening due to different processes that determined cycles of crustal stacking, arc expansion and within-plate eruptions. These processes comprise i) subduction of non seismic volcanic ridges, ii) subduction of young oceanic crust attached to an approaching spreading ridge, and iii) subduction of highly serpentinized fracture zones producing localized shallow subduction settings. These processes operate at different temporal and spatial scales producing a similar pattern of deformation and magmatism. The Southern Andes have been constructed and destructed repeatedly through this mechanism.