A history of Proterozoic terranes in southern South America: From Rodinia to Gondwana

dc.creatorCasquet, C.
dc.creatorRapela, Carlos Washington
dc.creatorPankhurst, R. J.
dc.creatorBaldo, E. G.
dc.creatorGalindo, C.
dc.creatorFanning, C. M.
dc.creatorDahlquist, J. A.
dc.creatorSaavedra, J.
dc.date2012
dc.date2019-10-30T17:14:22Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/84426
dc.identifierissn:1674-9871
dc.descriptionThe role played by Paleoproterozoic cratons in southern South America from the Mesoproterozoic to the Early Cambrian is reconsidered here. This period involved protracted continental amalgamation that led to formation of the supercontinent Rodinia, followed by Neoproterozoic continental break-up, with the consequent opening of Clymene and Iapetus oceans, and finally continental re-assembly as Gondwana through complex oblique collisions in the Late Neoproterozoic to Early Cambrian. The evidence for this is based mainly on a combination of precise U-Pb SHRMP dating and radiogenic isotope data for igneous and metamorphic rocks from a large area extending from the Rio de la Plata craton in the east to the Argentine Precordillera in the west and as far north as Arequipa in Peru. Our interpretation of the paleogeographical and geodynamic evolution invokes a hypothetical Paleoproterozoic block (MARA) embracing basement ultimately older than 1.7 Ga in the Western Sierras Pampeanas (Argentina), the Arequipa block (Peru), the Rio Apa block (Brazil), and probably also the Paraguaia block (Bolivia).
dc.descriptionCentro de Investigaciones Geológicas
dc.formatapplication/pdf
dc.format137-145
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by-nc-sa/4.0/
dc.rightsCreative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.subjectGeología
dc.subjectCratons
dc.subjectGrenvillian
dc.subjectNeoproterozoic rifting
dc.subjectPaleoproterozoic
dc.subjectSW Gondwana assembly
dc.titleA history of Proterozoic terranes in southern South America: From Rodinia to Gondwana
dc.typeArticulo
dc.typeRevision


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