Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)

Verdecchia, Sebastián; Casquet Martín, César; Baldo, Edgardo G.; Pankhurst, R.J.; Rapela, Carlos W.; Fanning, C.M.; Galindo Francisco, María Del Carmen

Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)

The Early Palaeozoic stratigraphy and tectonic history of the Eastern Sierras Pampeanas of central Argentina are complicated by metamorphism and deformation resulting from the Pampean (545–510 Ma) and Famatinian (490–440 Ma) orogenies. We report U–Pb sensitive high-resolution ion microprobe dating o...

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Detalhes bibliográficos
Autores:	Verdecchia, Sebastián, Casquet Martín, César, Baldo, Edgardo G., Pankhurst, R.J., Rapela, Carlos W., Fanning, C.M., Galindo Francisco, María Del Carmen
Formato:	artículo
Fecha de publicación:	2011
País:	España
Recursos:	Universidad Complutense de Madrid (UCM)
Repositorio:	Docta Complutense
Idioma:	inglés
OAI Identifier:	oai:docta.ucm.es:20.500.14352/42077
Acesso em linha:	https://hdl.handle.net/20.500.14352/42077
Access Level:	acceso abierto
Palavra-chave:	551.73 Gondwana U-Pb SHRIMP Sierras Pampeanas Argentina Geología estratigráfica 2506.19 Estratigrafía

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spelling	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)Verdecchia, SebastiánCasquet Martín, CésarBaldo, Edgardo G.Pankhurst, R.J.Rapela, Carlos W.Fanning, C.M.Galindo Francisco, María Del Carmen551.73GondwanaU-Pb SHRIMPSierras PampeanasArgentinaGeología estratigráfica2506.19 EstratigrafíaThe Early Palaeozoic stratigraphy and tectonic history of the Eastern Sierras Pampeanas of central Argentina are complicated by metamorphism and deformation resulting from the Pampean (545–510 Ma) and Famatinian (490–440 Ma) orogenies. We report U–Pb sensitive high-resolution ion microprobe dating of detrital zircons in two metasedimentary successions exposed at Quebrada de La Ce´bila (c. 28845’S, 66825’W): the Ambato and the La Ce´bila metamorphic complexes. The Ambato zircons record age peaks corresponding to Pampean (530 10 Ma), Brasiliano (c. 570 and c. 640 Ma), Grenville (c. 950 to c. 1025 Ma) and minor Neoarchaean ages. Similar peaks are also apparent in the La Ce´bila sample but it additionally contains Palaeoproterozoic zircons (c. 2.1 Ga) corresponding to the age of the Rio de la Plata craton, from which they are considered to have been sourced. Our interpretation is that the protolith of the Ambato complex was deposited prior to juxtaposition with the craton and is older than the Early Ordovician La Ce´bila metamorphic complex. We infer that the craton reached its current relative position in the Mid- to Late Cambrian, after the main Pampean tectonothermal event (530–520 Ma) and before deposition of the La Ce´bila protolith and the Achavil Formation (Sierra de Famatina), which contain comparable detrital zircon populations.Geological Society of London.Universidad Complutense de Madrid20112011-01-0120112011-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/42077reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/420772026-06-02T12:44:21Z
dc.title.none.fl_str_mv	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
title	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
spellingShingle	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina) Verdecchia, Sebastián 551.73 Gondwana U-Pb SHRIMP Sierras Pampeanas Argentina Geología estratigráfica 2506.19 Estratigrafía
title_short	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
title_full	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
title_fullStr	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
title_full_unstemmed	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
title_sort	Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)
dc.creator.none.fl_str_mv	Verdecchia, Sebastián Casquet Martín, César Baldo, Edgardo G. Pankhurst, R.J. Rapela, Carlos W. Fanning, C.M. Galindo Francisco, María Del Carmen
author	Verdecchia, Sebastián
author_facet	Verdecchia, Sebastián Casquet Martín, César Baldo, Edgardo G. Pankhurst, R.J. Rapela, Carlos W. Fanning, C.M. Galindo Francisco, María Del Carmen
author_role	author
author2	Casquet Martín, César Baldo, Edgardo G. Pankhurst, R.J. Rapela, Carlos W. Fanning, C.M. Galindo Francisco, María Del Carmen
author2_role	author author author author author author
dc.contributor.none.fl_str_mv	Universidad Complutense de Madrid
dc.subject.none.fl_str_mv	551.73 Gondwana U-Pb SHRIMP Sierras Pampeanas Argentina Geología estratigráfica 2506.19 Estratigrafía
topic	551.73 Gondwana U-Pb SHRIMP Sierras Pampeanas Argentina Geología estratigráfica 2506.19 Estratigrafía
description	The Early Palaeozoic stratigraphy and tectonic history of the Eastern Sierras Pampeanas of central Argentina are complicated by metamorphism and deformation resulting from the Pampean (545–510 Ma) and Famatinian (490–440 Ma) orogenies. We report U–Pb sensitive high-resolution ion microprobe dating of detrital zircons in two metasedimentary successions exposed at Quebrada de La Ce´bila (c. 28845’S, 66825’W): the Ambato and the La Ce´bila metamorphic complexes. The Ambato zircons record age peaks corresponding to Pampean (530 10 Ma), Brasiliano (c. 570 and c. 640 Ma), Grenville (c. 950 to c. 1025 Ma) and minor Neoarchaean ages. Similar peaks are also apparent in the La Ce´bila sample but it additionally contains Palaeoproterozoic zircons (c. 2.1 Ga) corresponding to the age of the Rio de la Plata craton, from which they are considered to have been sourced. Our interpretation is that the protolith of the Ambato complex was deposited prior to juxtaposition with the craton and is older than the Early Ordovician La Ce´bila metamorphic complex. We infer that the craton reached its current relative position in the Mid- to Late Cambrian, after the main Pampean tectonothermal event (530–520 Ma) and before deposition of the La Ce´bila protolith and the Achavil Formation (Sierra de Famatina), which contain comparable detrital zircon populations.
publishDate	2011
dc.date.none.fl_str_mv	2011 2011-01-01 2011 2011-01-01
dc.type.none.fl_str_mv	journal article http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv	info:eu-repo/semantics/article
format	article
dc.identifier.none.fl_str_mv	https://hdl.handle.net/20.500.14352/42077
url	https://hdl.handle.net/20.500.14352/42077
dc.language.none.fl_str_mv	Inglés eng
language_invalid_str_mv	Inglés
language	eng
dc.rights.none.fl_str_mv	open access http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv	info:eu-repo/semantics/openAccess
rights_invalid_str_mv	open access http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv	openAccess
dc.format.none.fl_str_mv	application/pdf
dc.publisher.none.fl_str_mv	Geological Society of London.
publisher.none.fl_str_mv	Geological Society of London.
dc.source.none.fl_str_mv	reponame:Docta Complutense instname:Universidad Complutense de Madrid (UCM)
instname_str	Universidad Complutense de Madrid (UCM)
reponame_str	Docta Complutense
collection	Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score	15,301629

Mid- to Late Cambrian docking of the Rı´o de la Plata craton to southwestern Gondwana: age constraints from U–Pb SHRIMP detrital zircon ages from Sierras de Ambato and Velasco (Sierras Pampeanas, Argentina)

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