Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)

The Cerro Corona is a shield volcano situated in the Alta Sierra de Somú Curá one of the tertiary volcanic complex that constitute the Meseta de Somú Curá in the Extrandean Patagonia. It is the highest center in the region and it is compound mainly of basaltic trachyandesites, with trachytic variati...

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Detalles Bibliográficos
Autores principales: Maro, G., Remesal, M.B.
Formato: JOUR
Materias:
Fractional crystallization
Intraplate magmatism
Somún curá
Tertiary
basalt
bimodal association
fractional crystallization
intraplate process
magma chamber
magmatism
shield volcano
Argentina
Patagonia
Rio Negro [Argentina]
Cura
Trachytes
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00044822_v69_n1_p142_Maro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00044822_v69_n1_p142_Maro
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spelling todo:paper_00044822_v69_n1_p142_Maro2023-10-03T13:58:56Z Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province) Maro, G. Remesal, M.B. Fractional crystallization Intraplate magmatism Somún curá Tertiary basalt bimodal association fractional crystallization intraplate process magma chamber magmatism shield volcano Tertiary Argentina Patagonia Rio Negro [Argentina] Cura Trachytes The Cerro Corona is a shield volcano situated in the Alta Sierra de Somú Curá one of the tertiary volcanic complex that constitute the Meseta de Somú Curá in the Extrandean Patagonia. It is the highest center in the region and it is compound mainly of basaltic trachyandesites, with trachytic variations on its flanks and crater. Despite the compositional bimodality with an important compositional gap between 54% and 58% in weight in SiO 2, this work suggests that trachytes are the product of the evolution of basaltic trachyandesites through fractional crystallization, with some influence of mafic recharge to the magmatic chamber, in agreement with the presence of disequilibrium textures in fenocrystals, essentially in felsic rocks. Fil:Maro, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Remesal, M.B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00044822_v69_n1_p142_Maro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fractional crystallization
Intraplate magmatism
Somún curá
Tertiary
basalt
bimodal association
fractional crystallization
intraplate process
magma chamber
magmatism
shield volcano
Tertiary
Argentina
Patagonia
Rio Negro [Argentina]
Cura
Trachytes
spellingShingle Fractional crystallization
Intraplate magmatism
Somún curá
Tertiary
basalt
bimodal association
fractional crystallization
intraplate process
magma chamber
magmatism
shield volcano
Tertiary
Argentina
Patagonia
Rio Negro [Argentina]
Cura
Trachytes
Maro, G.
Remesal, M.B.
Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)
topic_facet Fractional crystallization
Intraplate magmatism
Somún curá
Tertiary
basalt
bimodal association
fractional crystallization
intraplate process
magma chamber
magmatism
shield volcano
Tertiary
Argentina
Patagonia
Rio Negro [Argentina]
Cura
Trachytes
description The Cerro Corona is a shield volcano situated in the Alta Sierra de Somú Curá one of the tertiary volcanic complex that constitute the Meseta de Somú Curá in the Extrandean Patagonia. It is the highest center in the region and it is compound mainly of basaltic trachyandesites, with trachytic variations on its flanks and crater. Despite the compositional bimodality with an important compositional gap between 54% and 58% in weight in SiO 2, this work suggests that trachytes are the product of the evolution of basaltic trachyandesites through fractional crystallization, with some influence of mafic recharge to the magmatic chamber, in agreement with the presence of disequilibrium textures in fenocrystals, essentially in felsic rocks.
format JOUR
author Maro, G.
Remesal, M.B.
author_facet Maro, G.
Remesal, M.B.
author_sort Maro, G.
title Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)
title_short Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)
title_full Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)
title_fullStr Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)
title_full_unstemmed Bimodal volcanism of the cerro Corona volcano in the Alta Sierra de Somún Curá (Río Negro province)
title_sort bimodal volcanism of the cerro corona volcano in the alta sierra de somún curá (río negro province)
url http://hdl.handle.net/20.500.12110/paper_00044822_v69_n1_p142_Maro
work_keys_str_mv AT marog bimodalvolcanismofthecerrocoronavolcanointhealtasierradesomuncurarionegroprovince
AT remesalmb bimodalvolcanismofthecerrocoronavolcanointhealtasierradesomuncurarionegroprovince
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