Mid- to Late Cambrian docking of the Río 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...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Verdecchia, Sebastián Osvaldo, Casquet, César, Baldo, Edgardo Gaspar Agustín, Pankhurst, Robert John, Rapela, Carlos Washington, Fanning, Mark, Galindo, Carmen
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2011
Materias:	Ciencias Naturales Rio de la Plata U-Pb SHRIMP Gondwana Early Paleozoic
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/102683 https://ri.conicet.gov.ar/11336/54122
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-102683
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Naturales Rio de la Plata U-Pb SHRIMP Gondwana Early Paleozoic
spellingShingle	Ciencias Naturales Rio de la Plata U-Pb SHRIMP Gondwana Early Paleozoic Verdecchia, Sebastián Osvaldo Casquet, César Baldo, Edgardo Gaspar Agustín Pankhurst, Robert John Rapela, Carlos Washington Fanning, Mark Galindo, Carmen Mid- to Late Cambrian docking of the Río 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)
topic_facet	Ciencias Naturales Rio de la Plata U-Pb SHRIMP Gondwana Early Paleozoic
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 Cébila (c. 28°45'S, 66°25'W): the Ambato and the La Cébila 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 Cébila 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 Cébila 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 Cébila protolith and the Achavil Formation (Sierra de Famatina), which contain comparable detrital zircon populations.
format	Articulo Articulo
author	Verdecchia, Sebastián Osvaldo Casquet, César Baldo, Edgardo Gaspar Agustín Pankhurst, Robert John Rapela, Carlos Washington Fanning, Mark Galindo, Carmen
author_facet	Verdecchia, Sebastián Osvaldo Casquet, César Baldo, Edgardo Gaspar Agustín Pankhurst, Robert John Rapela, Carlos Washington Fanning, Mark Galindo, Carmen
author_sort	Verdecchia, Sebastián Osvaldo
title	Mid- to Late Cambrian docking of the Río 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_short	Mid- to Late Cambrian docking of the Río 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 Río 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 Río 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 Río 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 río 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)
publishDate	2011
url	http://sedici.unlp.edu.ar/handle/10915/102683 https://ri.conicet.gov.ar/11336/54122
work_keys_str_mv	AT verdecchiasebastianosvaldo midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina AT casquetcesar midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina AT baldoedgardogasparagustin midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina AT pankhurstrobertjohn midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina AT rapelacarloswashington midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina AT fanningmark midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina AT galindocarmen midtolatecambriandockingoftheriodelaplatacratontosouthwesterngondwanaageconstraintsfromupbshrimpdetritalzirconagesfromsierrasdeambatoandvelascosierraspampeanasargentina
bdutipo_str	Repositorios
_version_	1764820440360943617

Mid- to Late Cambrian docking of the Río 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)

Ejemplares similares