Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)

The Sierra Bermeja Pluton (southern Central Iberian Zone, Iberian Massif) is a late-Variscan intrusive constituted by cordierite-bearing peraluminous monzogranites. Detailed field mapping has allowed to disclose the presence of several NE–SW trending longitudinal composite bodies, formed by either a...

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Authors: Errandonea Martín, Jon, Sarrionandia-Ibarra Eguidazu, Fernando, Carracedo Sánchez, Manuel, Gil Ibarguchi, José Ignacio, Eguíluz Alarcón, Luis
Format: article
Publication Date:2018
Country:España
Institution:Universidad del País Vasco
Repository:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/75554
Online Access:http://hdl.handle.net/10810/75554
Access Level:Open access
Keyword:calc-alkaline lamprophyre
Vaugnerite series
redwitzite
cordierite-bearing granite
Iberian Massif
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spelling Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)Errandonea Martín, JonSarrionandia-Ibarra Eguidazu, FernandoCarracedo Sánchez, ManuelGil Ibarguchi, José IgnacioEguíluz Alarcón, Luiscalc-alkaline lamprophyreVaugnerite seriesredwitzitecordierite-bearing graniteIberian MassifThe Sierra Bermeja Pluton (southern Central Iberian Zone, Iberian Massif) is a late-Variscan intrusive constituted by cordierite-bearing peraluminous monzogranites. Detailed field mapping has allowed to disclose the presence of several NE–SW trending longitudinal composite bodies, formed by either aphanitic or phaneritic mesocratic rocks. According to their petrography and geochemistry these rocks are categorized as calc-alkaline lamprophyres and vaugnerite series rocks. Their primary mineralogy is characterized by variable amounts of plagioclase, amphibole, clinopyroxene, biotite, K-feldspar, quartz and apatite. Broadly, they show low SiO2 content (49–56wt.%), and high MgO+FeOt (10–17wt.%), K2O (3–5wt.%), Ba (963–2095ppm), Sr (401–1149ppm) and Cr (87–330ppm) contents. Field scale observations suggest that vaugneritic rocks and lamprophyres would constitute two independent magma pulses. Vaugneritic dioritoids intruded as syn-plutonic dykes, whereas lamprophyres were emplaced after the almost complete consolidation of the host monzogranites. In this way, vaugnerite series rocks would be an evidence for the contemporaneity of crustal- and mantle-melting processes during a late-Variscan stage, while lamprophyres would represent the ending of this stage.This work has been supported financially by the Spanish Ministerio de Ciencia e Innovación (MINECO, grant CGL2015-63530-P) and the University of the Basque Country (UPV/EHU, Grupo Consolidado project GIU15/05).UB202520252018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/75554reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2018.16.3.1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-sa/4.0/(c) 2018 Geologica Acta. This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.oai:addi.ehu.eus:10810/755542026-06-18T09:23:17Z
dc.title.none.fl_str_mv Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
title Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
spellingShingle Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
Errandonea Martín, Jon
calc-alkaline lamprophyre
Vaugnerite series
redwitzite
cordierite-bearing granite
Iberian Massif
title_short Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
title_full Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
title_fullStr Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
title_full_unstemmed Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
title_sort Petrography and geochemistry of late- to post-Variscan vaugnerite series rocks and calc-alkaline lamprophyres within a cordierite-bearing monzogranite (Sierra Bermeja Pluton, southern Iberian Massif)
dc.creator.none.fl_str_mv Errandonea Martín, Jon
Sarrionandia-Ibarra Eguidazu, Fernando
Carracedo Sánchez, Manuel
Gil Ibarguchi, José Ignacio
Eguíluz Alarcón, Luis
author Errandonea Martín, Jon
author_facet Errandonea Martín, Jon
Sarrionandia-Ibarra Eguidazu, Fernando
Carracedo Sánchez, Manuel
Gil Ibarguchi, José Ignacio
Eguíluz Alarcón, Luis
author_role author
author2 Sarrionandia-Ibarra Eguidazu, Fernando
Carracedo Sánchez, Manuel
Gil Ibarguchi, José Ignacio
Eguíluz Alarcón, Luis
author2_role author
author
author
author
dc.subject.none.fl_str_mv calc-alkaline lamprophyre
Vaugnerite series
redwitzite
cordierite-bearing granite
Iberian Massif
topic calc-alkaline lamprophyre
Vaugnerite series
redwitzite
cordierite-bearing granite
Iberian Massif
description The Sierra Bermeja Pluton (southern Central Iberian Zone, Iberian Massif) is a late-Variscan intrusive constituted by cordierite-bearing peraluminous monzogranites. Detailed field mapping has allowed to disclose the presence of several NE–SW trending longitudinal composite bodies, formed by either aphanitic or phaneritic mesocratic rocks. According to their petrography and geochemistry these rocks are categorized as calc-alkaline lamprophyres and vaugnerite series rocks. Their primary mineralogy is characterized by variable amounts of plagioclase, amphibole, clinopyroxene, biotite, K-feldspar, quartz and apatite. Broadly, they show low SiO2 content (49–56wt.%), and high MgO+FeOt (10–17wt.%), K2O (3–5wt.%), Ba (963–2095ppm), Sr (401–1149ppm) and Cr (87–330ppm) contents. Field scale observations suggest that vaugneritic rocks and lamprophyres would constitute two independent magma pulses. Vaugneritic dioritoids intruded as syn-plutonic dykes, whereas lamprophyres were emplaced after the almost complete consolidation of the host monzogranites. In this way, vaugnerite series rocks would be an evidence for the contemporaneity of crustal- and mantle-melting processes during a late-Variscan stage, while lamprophyres would represent the ending of this stage.
publishDate 2018
dc.date.none.fl_str_mv 2018
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/75554
url http://hdl.handle.net/10810/75554
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://revistes.ub.edu/index.php/GEOACTA/article/view/GeologicaActa2018.16.3.1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UB
publisher.none.fl_str_mv UB
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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