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

Casquet, Cesar; Rapela, Carlos W; Pankhurst, Robert J; Baldo, Edgardo; Galindo, Carmen; Fanning, Christopher; Dahlquist, Juan A.; Saavedra, J

Description

The 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...[Show more]

dc.contributor.authorCasquet, Cesar
dc.contributor.authorRapela, Carlos W
dc.contributor.authorPankhurst, Robert J
dc.contributor.authorBaldo, Edgardo
dc.contributor.authorGalindo, Carmen
dc.contributor.authorFanning, Christopher
dc.contributor.authorDahlquist, Juan A.
dc.contributor.authorSaavedra, J
dc.date.accessioned2015-12-10T22:21:29Z
dc.identifier.issn1674-9871
dc.identifier.urihttp://hdl.handle.net/1885/52238
dc.description.abstractThe 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.publisherElsevier
dc.rightsAuthor/s retain copyright
dc.sourceGeoscience Frontiers (Previously Earth Science Frontiers)
dc.subjectKeywords: Cambrian; craton; geodynamics; Gondwana; metamorphic rock; paleogeography; Proterozoic; rifting; Rodinia; SHRIMP dating; terrane; uranium-lead dating; Arequipa [Peru]; Argentina; Peru; Rio de la Plata Cratons; Grenvillian; Neoproterozoic rifting; Paleoproterozoic; SW Gondwana assembly
dc.titleA history of Proterozoic terranes in southern South America: From Rodinia to Gondwana
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume3
dc.date.issued2012
local.identifier.absfor040313 - Tectonics
local.identifier.absfor040311 - Stratigraphy (incl. Biostratigraphy and Sequence Stratigraphy)
local.identifier.ariespublicationu4027924xPUB242
local.type.statusPublished Version
local.contributor.affiliationCasquet, Cesar, Universidad Complutense de Madrid
local.contributor.affiliationRapela, Carlos W, Universidad Nacional de La Plata
local.contributor.affiliationPankhurst, Robert J, British Geological Survey
local.contributor.affiliationBaldo, Edgardo, Universidad Nacional de Cordoba
local.contributor.affiliationGalindo, Carmen, Universidad Complutense de Madrid
local.contributor.affiliationFanning, Christopher, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationDahlquist, Juan A., Universidad Nacional de Cordoba
local.contributor.affiliationSaavedra, J, Instituto de Agrobiologia y Recursos Naturales
local.bibliographicCitation.issue2
local.bibliographicCitation.startpage137
local.bibliographicCitation.lastpage145
local.identifier.doi10.1016/j.gsf.2011.11.004
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2016-02-24T10:29:14Z
local.identifier.scopusID2-s2.0-84857624833
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

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