Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambr...

Autores
Zandomeni, Priscila; Moreno, Juan; Verdecchia, Sebastián; Baldo, Edgardo; Dahlquist, Juan; Morales Cámera, Matías; Balbis, Catalina; Benítez, Manuela E.; Serra Varela, Samanta; Lembo Wuest, Carlos
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Sierra de Guasayán (Eastern Sierras Pampeanas, Argentina) is formed by low to medium grade metamorphic rocks intruded by Cambrian metaluminous (La Soledad quartz-diorite), slightly peraluminous (Guasayán, El Escondido and El Martirizado granodiorite plutons), and strongly peraluminous (Alto Bello granodiorite) granitoids of the Pampean magmatic arc. Chemical compositions of amphibole, plagioclase, biotite, and titanite indicate that these granitoids were emplaced at low pressure (mostly <3 kbar) and temperature (<770 °C) under oxidizing conditions (QFM + 1 and QFM + 2), which are similar to the emplacement conditions reported for other granites of the Pampean magmatic arc. Mineral assemblages and whole-rock and mineral chemistry of the granitoids from the Sierra de Guasayán indicate an I-type affinity for the La Soledad quartz-diorite (amphibole, biotite, and titanite), S-type affinity for the Alto Bello granodiorite (biotite, muscovite, cordierite, and sillimanite), and a hybrid nature for the main Guasayán and El Escondido plutons (biotite, monazite, and magnetite). This hybrid nature is supported by the presence of abundant mafic microgranular enclaves and rapakivi texture and by published zircon Hf-isotope data (εHfi ranging from −4.76 to −0.12). This suggests, in turn, the involvement of hybridization in the genesis of these granitoids, which seems to be a common mechanism operating in the Pampean magmatic arc.
Instituto de Recursos Minerales
Materia
Geología
I-type granitoids
S-type granitoids
Hybrid granitoids
Mineral chemistry
Geothermobarometry
Sierra de Guasayán
Pampean Orogeny
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/125399

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network_name_str SEDICI (UNLP)
spelling Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)Zandomeni, PriscilaMoreno, JuanVerdecchia, SebastiánBaldo, EdgardoDahlquist, JuanMorales Cámera, MatíasBalbis, CatalinaBenítez, Manuela E.Serra Varela, SamantaLembo Wuest, CarlosGeologíaI-type granitoidsS-type granitoidsHybrid granitoidsMineral chemistryGeothermobarometrySierra de GuasayánPampean OrogenyThe Sierra de Guasayán (Eastern Sierras Pampeanas, Argentina) is formed by low to medium grade metamorphic rocks intruded by Cambrian metaluminous (La Soledad quartz-diorite), slightly peraluminous (Guasayán, El Escondido and El Martirizado granodiorite plutons), and strongly peraluminous (Alto Bello granodiorite) granitoids of the Pampean magmatic arc. Chemical compositions of amphibole, plagioclase, biotite, and titanite indicate that these granitoids were emplaced at low pressure (mostly <3 kbar) and temperature (<770 °C) under oxidizing conditions (QFM + 1 and QFM + 2), which are similar to the emplacement conditions reported for other granites of the Pampean magmatic arc. Mineral assemblages and whole-rock and mineral chemistry of the granitoids from the Sierra de Guasayán indicate an I-type affinity for the La Soledad quartz-diorite (amphibole, biotite, and titanite), S-type affinity for the Alto Bello granodiorite (biotite, muscovite, cordierite, and sillimanite), and a hybrid nature for the main Guasayán and El Escondido plutons (biotite, monazite, and magnetite). This hybrid nature is supported by the presence of abundant mafic microgranular enclaves and rapakivi texture and by published zircon Hf-isotope data (εHfi ranging from −4.76 to −0.12). This suggests, in turn, the involvement of hybridization in the genesis of these granitoids, which seems to be a common mechanism operating in the Pampean magmatic arc.Instituto de Recursos Minerales2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/125399enginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2075-163X/11/2/166info:eu-repo/semantics/altIdentifier/issn/2075-163Xinfo:eu-repo/semantics/altIdentifier/doi/10.3390/min11020166info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T11:02:08Zoai:sedici.unlp.edu.ar:10915/125399Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:02:09.018SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
title Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
spellingShingle Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
Zandomeni, Priscila
Geología
I-type granitoids
S-type granitoids
Hybrid granitoids
Mineral chemistry
Geothermobarometry
Sierra de Guasayán
Pampean Orogeny
title_short Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
title_full Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
title_fullStr Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
title_full_unstemmed Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
title_sort Crystallization conditions and petrogenetic characterization of metaluminous to peraluminous calc-alkaline orogenic granitoids from mineralogical systematics: the case of the Cambrian magmatism from the Sierra de Guasayán (Argentina)
dc.creator.none.fl_str_mv Zandomeni, Priscila
Moreno, Juan
Verdecchia, Sebastián
Baldo, Edgardo
Dahlquist, Juan
Morales Cámera, Matías
Balbis, Catalina
Benítez, Manuela E.
Serra Varela, Samanta
Lembo Wuest, Carlos
author Zandomeni, Priscila
author_facet Zandomeni, Priscila
Moreno, Juan
Verdecchia, Sebastián
Baldo, Edgardo
Dahlquist, Juan
Morales Cámera, Matías
Balbis, Catalina
Benítez, Manuela E.
Serra Varela, Samanta
Lembo Wuest, Carlos
author_role author
author2 Moreno, Juan
Verdecchia, Sebastián
Baldo, Edgardo
Dahlquist, Juan
Morales Cámera, Matías
Balbis, Catalina
Benítez, Manuela E.
Serra Varela, Samanta
Lembo Wuest, Carlos
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Geología
I-type granitoids
S-type granitoids
Hybrid granitoids
Mineral chemistry
Geothermobarometry
Sierra de Guasayán
Pampean Orogeny
topic Geología
I-type granitoids
S-type granitoids
Hybrid granitoids
Mineral chemistry
Geothermobarometry
Sierra de Guasayán
Pampean Orogeny
dc.description.none.fl_txt_mv The Sierra de Guasayán (Eastern Sierras Pampeanas, Argentina) is formed by low to medium grade metamorphic rocks intruded by Cambrian metaluminous (La Soledad quartz-diorite), slightly peraluminous (Guasayán, El Escondido and El Martirizado granodiorite plutons), and strongly peraluminous (Alto Bello granodiorite) granitoids of the Pampean magmatic arc. Chemical compositions of amphibole, plagioclase, biotite, and titanite indicate that these granitoids were emplaced at low pressure (mostly <3 kbar) and temperature (<770 °C) under oxidizing conditions (QFM + 1 and QFM + 2), which are similar to the emplacement conditions reported for other granites of the Pampean magmatic arc. Mineral assemblages and whole-rock and mineral chemistry of the granitoids from the Sierra de Guasayán indicate an I-type affinity for the La Soledad quartz-diorite (amphibole, biotite, and titanite), S-type affinity for the Alto Bello granodiorite (biotite, muscovite, cordierite, and sillimanite), and a hybrid nature for the main Guasayán and El Escondido plutons (biotite, monazite, and magnetite). This hybrid nature is supported by the presence of abundant mafic microgranular enclaves and rapakivi texture and by published zircon Hf-isotope data (εHfi ranging from −4.76 to −0.12). This suggests, in turn, the involvement of hybridization in the genesis of these granitoids, which seems to be a common mechanism operating in the Pampean magmatic arc.
Instituto de Recursos Minerales
description The Sierra de Guasayán (Eastern Sierras Pampeanas, Argentina) is formed by low to medium grade metamorphic rocks intruded by Cambrian metaluminous (La Soledad quartz-diorite), slightly peraluminous (Guasayán, El Escondido and El Martirizado granodiorite plutons), and strongly peraluminous (Alto Bello granodiorite) granitoids of the Pampean magmatic arc. Chemical compositions of amphibole, plagioclase, biotite, and titanite indicate that these granitoids were emplaced at low pressure (mostly <3 kbar) and temperature (<770 °C) under oxidizing conditions (QFM + 1 and QFM + 2), which are similar to the emplacement conditions reported for other granites of the Pampean magmatic arc. Mineral assemblages and whole-rock and mineral chemistry of the granitoids from the Sierra de Guasayán indicate an I-type affinity for the La Soledad quartz-diorite (amphibole, biotite, and titanite), S-type affinity for the Alto Bello granodiorite (biotite, muscovite, cordierite, and sillimanite), and a hybrid nature for the main Guasayán and El Escondido plutons (biotite, monazite, and magnetite). This hybrid nature is supported by the presence of abundant mafic microgranular enclaves and rapakivi texture and by published zircon Hf-isotope data (εHfi ranging from −4.76 to −0.12). This suggests, in turn, the involvement of hybridization in the genesis of these granitoids, which seems to be a common mechanism operating in the Pampean magmatic arc.
publishDate 2021
dc.date.none.fl_str_mv 2021
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info:eu-repo/semantics/publishedVersion
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format article
status_str publishedVersion
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language eng
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info:eu-repo/semantics/altIdentifier/issn/2075-163X
info:eu-repo/semantics/altIdentifier/doi/10.3390/min11020166
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Creative Commons Attribution 4.0 International (CC BY 4.0)
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