%0 Journal Article
%A Casquet Martín, César
%A Rapela, Carlos W.
%A Pankhurst, R.J.
%A Galindo Francisco, María Del Carmen
%A Baldo, Edgardo G.
%A Fanning, C.M.
%A Dahlquist, Juan A.
%A Saavedra, Julio
%T A history of Proterozoic terranes in southern SouthAmerica: From Rodinia to Gondwana
%D 2012
%@ 1674-9871
%U https://hdl.handle.net/20.500.14352/42072
%X The role played by Paleoproterozoic cratons in southern South America from the Mesoproterozoicto the Early Cambrian is reconsidered here. This period involved protracted continental amalgamationthat led to formation of the supercontinent Rodinia, followed by Neoproterozoic continentalbreak-up, with the consequent opening of Clymene and Iapetus oceans, and finally continentalre-assembly as Gondwana through complex oblique collisions in the Late Neoproterozoic to EarlyCambrian. The evidence for this is based mainly on a combination of precise U-Pb SHRMP datingand radiogenic isotope data for igneous and metamorphic rocks from a large area extending from theRio de la Plata craton in the east to the Argentine Precordillera in the west and as far north as Arequipain Peru. Our interpretation of the paleogeographical and geodynamic evolution invokes a hypotheticalPaleoproterozoic block (MARA) embracing basement ultimately older than 1.7 Ga in the Western Sierras
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