Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia
- Autores
- Zaffarana, Claudia Beatriz; Gallastegui, Gloria; Lagorio, Silvia L.; Poma, Stella M.; Busteros, Alicia; Serra Varela, Samanta; Orts, Darío Leandro; Silva Nieto, Diego G.; Giacosa, Raúl Eduardo; Ruiz González, Víctor; Puigdomenech Negre, Carla G.; Boltshauser, Bárbara Elisa; Somoza, Rubén
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Fil: Zaffarana, Claudia B. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Gallastegui, Gloria. Instituto Geológico y Minero de España. Madrid, España.
Fil: Lagorio, Silvia L. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.
Fil: Poma, Stella M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina.
Fil: Busteros, Alicia. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.
Fil: Serra Varela, Samanta. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Orts, Darío L. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Silva Nieto, Diego G. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.
Fil: Giacosa, Raúl E. Universidad Nacional de Río Negro. Río Negro, Argentina.
Fil: Ruiz González, Víctor. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina.
Fil: Puigdomenech Negre, Carla G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina.
Fil: Boltshauser, Bárbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Somoza, Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Zaffarana, Claudia B. Universidad Nacional de Río Negro. Río Negro, Argentina.
Fil: Poma, Stella M. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Serra Varela, Samanta. Universidad Nacional de Río Negro. Río Negro, Argentina.
Fil: Orts, Darío L. Universidad Nacional de Río Negro. Río Negro, Argentina.
Fil: Giacosa, Raúl E. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.
Fil: Ruiz González, Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Puigdomenech Negre, Carla G. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.
Fil: Boltshauser, Bárbara. Universidad Nacional de Río Negro. Río Negro, Argentina.
Central Patagonia is traversed by a belt of Early to Middle Jurassic calc-alkaline intermediate volcanic rocks interspersed with more felsic volcanic rocks which are associated with the widespread magmatism that took place during Gondwana break-up times. This work uses K–Ar and Ar–Ar dating and whole-rock and phenocryst (plagioclase, amphibole, clinopyroxene and titanomagnetite) compositional data to refine the age, geochemical signature and reservoir conditions of these volcanic rocks, which are known as Lonco Trapial Formation. The andesites, dacites and trachydacites which were the object of this study have either amphibole or clinopyroxene as the main mafic phenocryst (amphibole-bearing and clinopyroxene-bearing volcanic rocks, respectively), though amphibole is the main mafic phase. Despite the calc-alkaline signature a mild alkaline affinity emerges from some whole-rock trace elements content and from mineral chemistry (amphibole, clinopyroxene and titanomagnetite compositions). The magmatic evolution of the Lonco Trapial andesites, dacites and trachydacites was governed by fractionation of amphibole, clinopyroxene, plagioclase, titanite, titanomagnetite and apatite. Amphibole phenocrysts show an overall normal chemical zoning. The cores of the amphiboles crystallized over a temperature range of 869–916 °C, whereas the rims crystallized over a temperature range of 826–867 °C. Shallow to intermediate depths (2–8 kbar, ∼7–26 km) were inferred from geobarometric calculations. Crystallization temperatures are slightly higher in the clinopyroxene-bearing volcanic rocks, consistent with their more primitive character. The geobarometric estimations of this work are coherent with the lack of marine ingressions and with geophysical estimations which suggest that the Early Jurassic Moho depth would have been ≥35 km The combination of whole-rock and mineral geochemistry is consistent with an extensional affinity for this paleo-volcanic belt.
- - Materia
-
Ciencias Ambientales y de la Tierra
Geofísica
Geoquímica
Andesite
Central Patagonia
Jurassic
Mineral Chemistry
Whole-Rock Geochemistry
Ciencias Ambientales y de la Tierra
Geofísica
Geoquímica - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/5420
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Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central PatagoniaZaffarana, Claudia BeatrizGallastegui, GloriaLagorio, Silvia L.Poma, Stella M.Busteros, AliciaSerra Varela, SamantaOrts, Darío LeandroSilva Nieto, Diego G.Giacosa, Raúl EduardoRuiz González, VíctorPuigdomenech Negre, Carla G.Boltshauser, Bárbara ElisaSomoza, RubénCiencias Ambientales y de la TierraGeofísicaGeoquímicaAndesiteCentral PatagoniaJurassicMineral ChemistryWhole-Rock GeochemistryCiencias Ambientales y de la TierraGeofísicaGeoquímicaFil: Zaffarana, Claudia B. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Gallastegui, Gloria. Instituto Geológico y Minero de España. Madrid, España.Fil: Lagorio, Silvia L. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.Fil: Poma, Stella M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina.Fil: Busteros, Alicia. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.Fil: Serra Varela, Samanta. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Orts, Darío L. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Silva Nieto, Diego G. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.Fil: Giacosa, Raúl E. Universidad Nacional de Río Negro. Río Negro, Argentina.Fil: Ruiz González, Víctor. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina.Fil: Puigdomenech Negre, Carla G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina.Fil: Boltshauser, Bárbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Somoza, Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Zaffarana, Claudia B. Universidad Nacional de Río Negro. Río Negro, Argentina.Fil: Poma, Stella M. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Serra Varela, Samanta. Universidad Nacional de Río Negro. Río Negro, Argentina.Fil: Orts, Darío L. Universidad Nacional de Río Negro. Río Negro, Argentina.Fil: Giacosa, Raúl E. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina.Fil: Ruiz González, Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Puigdomenech Negre, Carla G. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina.Fil: Boltshauser, Bárbara. Universidad Nacional de Río Negro. Río Negro, Argentina.Central Patagonia is traversed by a belt of Early to Middle Jurassic calc-alkaline intermediate volcanic rocks interspersed with more felsic volcanic rocks which are associated with the widespread magmatism that took place during Gondwana break-up times. This work uses K–Ar and Ar–Ar dating and whole-rock and phenocryst (plagioclase, amphibole, clinopyroxene and titanomagnetite) compositional data to refine the age, geochemical signature and reservoir conditions of these volcanic rocks, which are known as Lonco Trapial Formation. The andesites, dacites and trachydacites which were the object of this study have either amphibole or clinopyroxene as the main mafic phenocryst (amphibole-bearing and clinopyroxene-bearing volcanic rocks, respectively), though amphibole is the main mafic phase. Despite the calc-alkaline signature a mild alkaline affinity emerges from some whole-rock trace elements content and from mineral chemistry (amphibole, clinopyroxene and titanomagnetite compositions). The magmatic evolution of the Lonco Trapial andesites, dacites and trachydacites was governed by fractionation of amphibole, clinopyroxene, plagioclase, titanite, titanomagnetite and apatite. Amphibole phenocrysts show an overall normal chemical zoning. The cores of the amphiboles crystallized over a temperature range of 869–916 °C, whereas the rims crystallized over a temperature range of 826–867 °C. Shallow to intermediate depths (2–8 kbar, ∼7–26 km) were inferred from geobarometric calculations. Crystallization temperatures are slightly higher in the clinopyroxene-bearing volcanic rocks, consistent with their more primitive character. The geobarometric estimations of this work are coherent with the lack of marine ingressions and with geophysical estimations which suggest that the Early Jurassic Moho depth would have been ≥35 km The combination of whole-rock and mineral geochemistry is consistent with an extensional affinity for this paleo-volcanic belt.-Elsevier Science Ltd2018-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfZaffarana, Claudia B., Gallastegui, Gloria., Lagorio, Silvia L., Poma, Stella M., Busteros, Alicia. and et al. (2018). Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia. Elsevier Science Ltd; Journal of South American Earth Sciences; 88; 415-4450895-9811https://www.sciencedirect.com/science/article/pii/S0895981118301846?via%3Dihubhttp://rid.unrn.edu.ar/handle/20.500.12049/5420https://doi.org/10.1016/j.jsames.2018.09.006eng88Journal of South American Earth Sciencesinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-04T11:12:53Zoai:rid.unrn.edu.ar:20.500.12049/5420instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-04 11:12:53.364RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse |
| dc.title.none.fl_str_mv |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| title |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| spellingShingle |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia Zaffarana, Claudia Beatriz Ciencias Ambientales y de la Tierra Geofísica Geoquímica Andesite Central Patagonia Jurassic Mineral Chemistry Whole-Rock Geochemistry Ciencias Ambientales y de la Tierra Geofísica Geoquímica |
| title_short |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| title_full |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| title_fullStr |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| title_full_unstemmed |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| title_sort |
Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia |
| dc.creator.none.fl_str_mv |
Zaffarana, Claudia Beatriz Gallastegui, Gloria Lagorio, Silvia L. Poma, Stella M. Busteros, Alicia Serra Varela, Samanta Orts, Darío Leandro Silva Nieto, Diego G. Giacosa, Raúl Eduardo Ruiz González, Víctor Puigdomenech Negre, Carla G. Boltshauser, Bárbara Elisa Somoza, Rubén |
| author |
Zaffarana, Claudia Beatriz |
| author_facet |
Zaffarana, Claudia Beatriz Gallastegui, Gloria Lagorio, Silvia L. Poma, Stella M. Busteros, Alicia Serra Varela, Samanta Orts, Darío Leandro Silva Nieto, Diego G. Giacosa, Raúl Eduardo Ruiz González, Víctor Puigdomenech Negre, Carla G. Boltshauser, Bárbara Elisa Somoza, Rubén |
| author_role |
author |
| author2 |
Gallastegui, Gloria Lagorio, Silvia L. Poma, Stella M. Busteros, Alicia Serra Varela, Samanta Orts, Darío Leandro Silva Nieto, Diego G. Giacosa, Raúl Eduardo Ruiz González, Víctor Puigdomenech Negre, Carla G. Boltshauser, Bárbara Elisa Somoza, Rubén |
| author2_role |
author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Ambientales y de la Tierra Geofísica Geoquímica Andesite Central Patagonia Jurassic Mineral Chemistry Whole-Rock Geochemistry Ciencias Ambientales y de la Tierra Geofísica Geoquímica |
| topic |
Ciencias Ambientales y de la Tierra Geofísica Geoquímica Andesite Central Patagonia Jurassic Mineral Chemistry Whole-Rock Geochemistry Ciencias Ambientales y de la Tierra Geofísica Geoquímica |
| dc.description.none.fl_txt_mv |
Fil: Zaffarana, Claudia B. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Gallastegui, Gloria. Instituto Geológico y Minero de España. Madrid, España. Fil: Lagorio, Silvia L. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina. Fil: Poma, Stella M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina. Fil: Busteros, Alicia. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina. Fil: Serra Varela, Samanta. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Orts, Darío L. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Silva Nieto, Diego G. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina. Fil: Giacosa, Raúl E. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: Ruiz González, Víctor. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina. Fil: Puigdomenech Negre, Carla G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Buenos Aires, Argentina. Fil: Boltshauser, Bárbara. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Somoza, Rubén. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Zaffarana, Claudia B. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: Poma, Stella M. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Serra Varela, Samanta. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: Orts, Darío L. Universidad Nacional de Río Negro. Río Negro, Argentina. Fil: Giacosa, Raúl E. Servicio Geológico Minero Argentino (SEGEMAR). Buenos Aires, Argentina. Fil: Ruiz González, Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Puigdomenech Negre, Carla G. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. Fil: Boltshauser, Bárbara. Universidad Nacional de Río Negro. Río Negro, Argentina. Central Patagonia is traversed by a belt of Early to Middle Jurassic calc-alkaline intermediate volcanic rocks interspersed with more felsic volcanic rocks which are associated with the widespread magmatism that took place during Gondwana break-up times. This work uses K–Ar and Ar–Ar dating and whole-rock and phenocryst (plagioclase, amphibole, clinopyroxene and titanomagnetite) compositional data to refine the age, geochemical signature and reservoir conditions of these volcanic rocks, which are known as Lonco Trapial Formation. The andesites, dacites and trachydacites which were the object of this study have either amphibole or clinopyroxene as the main mafic phenocryst (amphibole-bearing and clinopyroxene-bearing volcanic rocks, respectively), though amphibole is the main mafic phase. Despite the calc-alkaline signature a mild alkaline affinity emerges from some whole-rock trace elements content and from mineral chemistry (amphibole, clinopyroxene and titanomagnetite compositions). The magmatic evolution of the Lonco Trapial andesites, dacites and trachydacites was governed by fractionation of amphibole, clinopyroxene, plagioclase, titanite, titanomagnetite and apatite. Amphibole phenocrysts show an overall normal chemical zoning. The cores of the amphiboles crystallized over a temperature range of 869–916 °C, whereas the rims crystallized over a temperature range of 826–867 °C. Shallow to intermediate depths (2–8 kbar, ∼7–26 km) were inferred from geobarometric calculations. Crystallization temperatures are slightly higher in the clinopyroxene-bearing volcanic rocks, consistent with their more primitive character. The geobarometric estimations of this work are coherent with the lack of marine ingressions and with geophysical estimations which suggest that the Early Jurassic Moho depth would have been ≥35 km The combination of whole-rock and mineral geochemistry is consistent with an extensional affinity for this paleo-volcanic belt. - |
| description |
Fil: Zaffarana, Claudia B. Consejo Nacional de Investigaciones Científicas y Técnicas. Buenos Aires, Argentina. |
| publishDate |
2018 |
| dc.date.none.fl_str_mv |
2018-12 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
Zaffarana, Claudia B., Gallastegui, Gloria., Lagorio, Silvia L., Poma, Stella M., Busteros, Alicia. and et al. (2018). Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia. Elsevier Science Ltd; Journal of South American Earth Sciences; 88; 415-445 0895-9811 https://www.sciencedirect.com/science/article/pii/S0895981118301846?via%3Dihub http://rid.unrn.edu.ar/handle/20.500.12049/5420 https://doi.org/10.1016/j.jsames.2018.09.006 |
| identifier_str_mv |
Zaffarana, Claudia B., Gallastegui, Gloria., Lagorio, Silvia L., Poma, Stella M., Busteros, Alicia. and et al. (2018). Geochemical signature and reservoir conditions of Early Jurassic calc-alkaline volcanic rocks from Lonco Trapial Formation, Central Patagonia. Elsevier Science Ltd; Journal of South American Earth Sciences; 88; 415-445 0895-9811 |
| url |
https://www.sciencedirect.com/science/article/pii/S0895981118301846?via%3Dihub http://rid.unrn.edu.ar/handle/20.500.12049/5420 https://doi.org/10.1016/j.jsames.2018.09.006 |
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eng |
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88 Journal of South American Earth Sciences |
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Elsevier Science Ltd |
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Elsevier Science Ltd |
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