La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis

La Horqueta Formation is developed from the Seco de las Peñas River to Agua de la Piedra creek within the San Rafael block and was deposited in a marine environment. It comprises dominantly metasandstones, although metasiltstones, metapelites, and rare metaconglomerates are also present. The base of...

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Detalles Bibliográficos
Autores principales: Abre, Paulina, Cingolani, Carlos Alberto, Chemale Jr., Farid, Uriz, Norberto Javier
Formato: Libro Capitulo de libro
Lenguaje:Inglés
Publicado: Springer 2017
Materias:
Geología
Geochemistry
Isotope data
Provenance
La Horqueta Formation
San Rafael Block
Cuyania terrane
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/152054
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-152054
record_format dspace
spelling I19-R120-10915-1520542023-04-24T20:08:41Z http://sedici.unlp.edu.ar/handle/10915/152054 issn:2197-9596 isbn:978-3-319-50153-6 La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis Abre, Paulina Cingolani, Carlos Alberto Chemale Jr., Farid Uriz, Norberto Javier 2017 2023-04-24T18:55:39Z Cingolani, Carlos Alberto Springer en Geología Geochemistry Isotope data Provenance La Horqueta Formation San Rafael Block Cuyania terrane La Horqueta Formation is developed from the Seco de las Peñas River to Agua de la Piedra creek within the San Rafael block and was deposited in a marine environment. It comprises dominantly metasandstones, although metasiltstones, metapelites, and rare metaconglomerates are also present. The base of the succession is not exposed and it is superposed through unconformity by Upper Carboniferous units. La Horqueta Formation is folded and shows cleavage. Provenance analyses based on whole-rock geochemistry and isotope data is the main focus of the work. Whole-rock geochemical data point to a derivation from unrecycled upper continental crust, based mainly on Th/Sc, Zr/Sc, La/Th, and Th/U ratios and rare earth element (REE) patterns (including Eu anomalies). Sc, Cr, and V concentrations and low Th/Sc ratios are indicative of a source slightly less evolved than the average upper continental crust. The εNd values are within the range of variation of data from the Mesoproterozoic Cerro La Ventana Formation, which is part of the basement of the Cuyania terrane outcropping within the San Rafael block. The Rb-Sr whole-rock data indicate that the low-grade metamorphism and folding events are Devonian in age. U-Pb detrital zircon ages suggest main derivation from the Mesoproterozoic (“Grenvillian-age”) basement of the San Rafael block and the Pampean–Brasiliano cycle, as well as a detrital input from the Río de la Plata craton and the Famatinian belt. Despite geochemical similarities, Río Seco de los Castaños Formation display different proportions of detrital zircon ages, when compared to La Horqueta Formation. Centro de Investigaciones Geológicas Libro Capitulo de libro http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geología
Geochemistry
Isotope data
Provenance
La Horqueta Formation
San Rafael Block
Cuyania terrane
spellingShingle Geología
Geochemistry
Isotope data
Provenance
La Horqueta Formation
San Rafael Block
Cuyania terrane
Abre, Paulina
Cingolani, Carlos Alberto
Chemale Jr., Farid
Uriz, Norberto Javier
Cingolani, Carlos Alberto
La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis
topic_facet Geología
Geochemistry
Isotope data
Provenance
La Horqueta Formation
San Rafael Block
Cuyania terrane
description La Horqueta Formation is developed from the Seco de las Peñas River to Agua de la Piedra creek within the San Rafael block and was deposited in a marine environment. It comprises dominantly metasandstones, although metasiltstones, metapelites, and rare metaconglomerates are also present. The base of the succession is not exposed and it is superposed through unconformity by Upper Carboniferous units. La Horqueta Formation is folded and shows cleavage. Provenance analyses based on whole-rock geochemistry and isotope data is the main focus of the work. Whole-rock geochemical data point to a derivation from unrecycled upper continental crust, based mainly on Th/Sc, Zr/Sc, La/Th, and Th/U ratios and rare earth element (REE) patterns (including Eu anomalies). Sc, Cr, and V concentrations and low Th/Sc ratios are indicative of a source slightly less evolved than the average upper continental crust. The εNd values are within the range of variation of data from the Mesoproterozoic Cerro La Ventana Formation, which is part of the basement of the Cuyania terrane outcropping within the San Rafael block. The Rb-Sr whole-rock data indicate that the low-grade metamorphism and folding events are Devonian in age. U-Pb detrital zircon ages suggest main derivation from the Mesoproterozoic (“Grenvillian-age”) basement of the San Rafael block and the Pampean–Brasiliano cycle, as well as a detrital input from the Río de la Plata craton and the Famatinian belt. Despite geochemical similarities, Río Seco de los Castaños Formation display different proportions of detrital zircon ages, when compared to La Horqueta Formation.
format Libro
Capitulo de libro
author Abre, Paulina
Cingolani, Carlos Alberto
Chemale Jr., Farid
Uriz, Norberto Javier
Cingolani, Carlos Alberto
author_facet Abre, Paulina
Cingolani, Carlos Alberto
Chemale Jr., Farid
Uriz, Norberto Javier
Cingolani, Carlos Alberto
author_sort Abre, Paulina
title La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis
title_short La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis
title_full La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis
title_fullStr La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis
title_full_unstemmed La Horqueta Formation: Geochemistry, Isotopic Data, and Provenance Analysis
title_sort la horqueta formation: geochemistry, isotopic data, and provenance analysis
publisher Springer
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/152054
work_keys_str_mv AT abrepaulina lahorquetaformationgeochemistryisotopicdataandprovenanceanalysis
AT cingolanicarlosalberto lahorquetaformationgeochemistryisotopicdataandprovenanceanalysis
AT chemalejrfarid lahorquetaformationgeochemistryisotopicdataandprovenanceanalysis
AT uriznorbertojavier lahorquetaformationgeochemistryisotopicdataandprovenanceanalysis
AT cingolanicarlosalberto lahorquetaformationgeochemistryisotopicdataandprovenanceanalysis
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