Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)

SHRIMP and LA-ICP-MS analyses carried out on zircons from the Río de los Sauces granite revealed their metamorphic and igneous nature. The metamorphic zircons yielded an age of 537±4.8 (2σ)Ma that probably predates the onset of the anatexis during the Pampean orogeny. By contrast, the igneous zircon...

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Autores principales: D’Eramo, F, J., Esteban, J. J., Demartis, M., Aragón, Eugenio, Coniglio, J. E., Pinotti, L.P.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Geología
Pampean orogeny
Pampean metamorphism
Río de los Sauces granite
U-Pb SHRIMP dating
LA-ICP-MS analyses
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/114702
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-114702
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Pampean orogeny
Pampean metamorphism
Río de los Sauces granite
U-Pb SHRIMP dating
LA-ICP-MS analyses
spellingShingle Geología
Pampean orogeny
Pampean metamorphism
Río de los Sauces granite
U-Pb SHRIMP dating
LA-ICP-MS analyses
D’Eramo, F, J.
Esteban, J. J.
Demartis, M.
Aragón, Eugenio
Coniglio, J. E.
Pinotti, L.P.
Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)
topic_facet Geología
Pampean orogeny
Pampean metamorphism
Río de los Sauces granite
U-Pb SHRIMP dating
LA-ICP-MS analyses
description SHRIMP and LA-ICP-MS analyses carried out on zircons from the Río de los Sauces granite revealed their metamorphic and igneous nature. The metamorphic zircons yielded an age of 537±4.8 (2σ)Ma that probably predates the onset of the anatexis during the Pampean orogeny. By contrast, the igneous zircons yielded a younger age of 529±6 (2σ)Ma and reflected its crystallization age. These data point to a short time lag of ca. 8Myr between the High Temperature (HT) metamorphic peak and the subsequent crystallization age of the granite. Concordia age of 534±3.8 (2σ)Ma, for both types of zircon populations, can be considered as the mean age of the Pampean HT metamorphism in the Sierras de Córdoba.
format Articulo
Articulo
author D’Eramo, F, J.
Esteban, J. J.
Demartis, M.
Aragón, Eugenio
Coniglio, J. E.
Pinotti, L.P.
author_facet D’Eramo, F, J.
Esteban, J. J.
Demartis, M.
Aragón, Eugenio
Coniglio, J. E.
Pinotti, L.P.
author_sort D’Eramo, F, J.
title Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)
title_short Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)
title_full Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)
title_fullStr Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)
title_full_unstemmed Time lag between metamorphism and crystallization of anatectic granites (Córdoba, Argentina)
title_sort time lag between metamorphism and crystallization of anatectic granites (córdoba, argentina)
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/114702
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