INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
The evolution of the Chilean- Argentinean Andes
FOLGUERA, A., CONTRERAS REYES, E., HEREDIA, N., ENCINAS, A., IANNELLI, S., OLIVEROS, V., DÁVILA, F., COLLO, G., GIAMBIAGI, L., MAKSYMOWICZ, A., IGLESIA LLANOS, P., TURIENZO, M., NAIPAUER, M., ORTS, D., M., LITVAK, V., ALVAREZ, O., ARRIAGADA, C.
Año: 2017 p. 579
This book analyzes the tectonic evolution of the Argentinean and Chilean Andes through foursections, the first dealing with the structure of the fore-arc from bathymetric, gravimetric andseismic data; a second section that discusses the Paleozoic evolution of this sector, first showingthe paleomagnetic behavior of the continent during this period and then discussing the differenthypothesis associated with the accretion of continental slivers and consequent closure of oceanbasins, producing deformation and metamorphism, reconstructing the geometry of the EarlyPaleozoic orogens and arcs across South American western sector; the third section analyzes theproto-Andean arc evolution, showing the paleomagnetic path of the margin, clues about its earlyarc activity, its relation to LIP activity associated with Pangea supercontinent desintegration andsubduction zone; a fourth section discusses early development of the Andes that started as anon-organized collage of within-plate deformation sectors that lately established next to thesubduction zone when the south Atlantic ocean started to expand; and finally a fifth section thatdiscusses different aspects of the Cenozoic evolution of the Andes and its contemporaneousvolcanic arc, such as development of shallow subduction settings through time, the role ofdynamic subsidence, opening and closure of intra- and back-arc basins, etc.