Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)

Autores
Santos, Fernanda S.; Sommer, Carlos Augusto; Haag, Maurício Barcelos; Báez, Walter; Caselli, Alberto Tomás; Báez, Alejandro David
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Santos, Fernanda. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.
Fil: Sommer, Carlos. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.
Fil: Haag, Maurício. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil. Department of Earth Sciences, University of Toronto. Canada.
Fil: Báez, Walter. IBIGEO (Universidad Nacional de Salta - CONICET). Argentina.
Fil: Caselli. Alberto. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
Fil: Báez, Alejandro. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
Monogenetic volcanoes are among the most common volcanic landforms on Earth. The morphology and distribution of small volcanoes can provide important information about eruption dynamics and tectonics. The Southern Volcanic Zone of the Andes (CSVZ) comprises one of the most active magmatic regions on Earth. Characterized by the presence of polygenetic volcanoes and calderas in a complex tectonic setting, this region also hosts hundreds of small, back-arc monogenetic volcanoes. In this contribution, we apply a Geographic Information System (GIS) that combines imagery data and digital elevation models to establish the first comprehensive dataset of monogenetic volcanoes in the CSVZ (38◦ to 40◦ S), exploring their eruption dynamics and relationship to tectonic and structural processes. Combining spatial analysis and geomorphological observations, we identify the presence of 335 monogenetic volcanoes distributed into nine clusters, now grouped in the Zapala Volcanic Field (ZVF). The ZVF is marked by the predominance of cinder cones (80%) followed by phreatomagmatic volcanoes (20%), suggesting some influence of external water in the eruption dynamics. Generally, monogenetic vents present a clear association with local and regional lineaments, suggesting a strong structural control on the occurrence of the monogenetic deposits in the ZVF. The higher vent densities are observed in the southern Loncopu´e Though, an important extensional feature related to tearing of the subducted Nazca plate underneath the South American Plate. Morphometric parameters of cinder cones indicate variable stress orientations in the CSVZ that possibly results from the oblique tectonics in the region. From north to south, the maximum principal stress rotates from NE-SW to E-W and becomes progressively less constrained as it distances from the current magmatic arc. Based on the relative ages, we map the evolution of monogenetic volcanism through time. Our results suggest a waning in the monogenetic activity in ZVF over time. When compared to monogenetic fields in the Central Andes, the ZVF is marked by higher vent densities and number phreatomagmatic landforms, with the absence of lava domes. This ultimately reflects the contrasting crustal structure and climate conditions of these two regions.
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Materia
Ciencias Exactas y Naturales
Monogenetic Volcanism
Geomorphology
Southern Volcanic Zone
Spatial Analysis
Geographic Information System
Andes
Ciencias Exactas y Naturales
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/8405

id RIDUNRN_9164de54bede1c78139c70d5a4ea302f
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network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)Santos, Fernanda S.Sommer, Carlos AugustoHaag, Maurício BarcelosBáez, WalterCaselli, Alberto TomásBáez, Alejandro DavidCiencias Exactas y NaturalesMonogenetic VolcanismGeomorphologySouthern Volcanic ZoneSpatial AnalysisGeographic Information SystemAndesCiencias Exactas y NaturalesFil: Santos, Fernanda. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.Fil: Sommer, Carlos. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.Fil: Haag, Maurício. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil. Department of Earth Sciences, University of Toronto. Canada.Fil: Báez, Walter. IBIGEO (Universidad Nacional de Salta - CONICET). Argentina.Fil: Caselli. Alberto. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.Fil: Báez, Alejandro. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.Monogenetic volcanoes are among the most common volcanic landforms on Earth. The morphology and distribution of small volcanoes can provide important information about eruption dynamics and tectonics. The Southern Volcanic Zone of the Andes (CSVZ) comprises one of the most active magmatic regions on Earth. Characterized by the presence of polygenetic volcanoes and calderas in a complex tectonic setting, this region also hosts hundreds of small, back-arc monogenetic volcanoes. In this contribution, we apply a Geographic Information System (GIS) that combines imagery data and digital elevation models to establish the first comprehensive dataset of monogenetic volcanoes in the CSVZ (38◦ to 40◦ S), exploring their eruption dynamics and relationship to tectonic and structural processes. Combining spatial analysis and geomorphological observations, we identify the presence of 335 monogenetic volcanoes distributed into nine clusters, now grouped in the Zapala Volcanic Field (ZVF). The ZVF is marked by the predominance of cinder cones (80%) followed by phreatomagmatic volcanoes (20%), suggesting some influence of external water in the eruption dynamics. Generally, monogenetic vents present a clear association with local and regional lineaments, suggesting a strong structural control on the occurrence of the monogenetic deposits in the ZVF. The higher vent densities are observed in the southern Loncopu´e Though, an important extensional feature related to tearing of the subducted Nazca plate underneath the South American Plate. Morphometric parameters of cinder cones indicate variable stress orientations in the CSVZ that possibly results from the oblique tectonics in the region. From north to south, the maximum principal stress rotates from NE-SW to E-W and becomes progressively less constrained as it distances from the current magmatic arc. Based on the relative ages, we map the evolution of monogenetic volcanism through time. Our results suggest a waning in the monogenetic activity in ZVF over time. When compared to monogenetic fields in the Central Andes, the ZVF is marked by higher vent densities and number phreatomagmatic landforms, with the absence of lava domes. This ultimately reflects the contrasting crustal structure and climate conditions of these two regions.-El Sevier2022info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfSantos F., Sommer C., Haag M., Baez W., Caselli A., Baez A. (2022). Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina). Geomorphology; 402; 108130.0169-555Xhttps://www.sciencedirect.com/science/article/pii/S0169555X2200023X?via%3Dihub#!http://rid.unrn.edu.ar/handle/20.500.12049/8405https://doi.org/10.1016/j.geomorph.2022.108130enghttps://www.sciencedirect.com/journal/geomorphology402Geomorphologyinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:12Zoai:rid.unrn.edu.ar:20.500.12049/8405instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:12.32RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
title Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
spellingShingle Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
Santos, Fernanda S.
Ciencias Exactas y Naturales
Monogenetic Volcanism
Geomorphology
Southern Volcanic Zone
Spatial Analysis
Geographic Information System
Andes
Ciencias Exactas y Naturales
title_short Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
title_full Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
title_fullStr Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
title_full_unstemmed Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
title_sort Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)
dc.creator.none.fl_str_mv Santos, Fernanda S.
Sommer, Carlos Augusto
Haag, Maurício Barcelos
Báez, Walter
Caselli, Alberto Tomás
Báez, Alejandro David
author Santos, Fernanda S.
author_facet Santos, Fernanda S.
Sommer, Carlos Augusto
Haag, Maurício Barcelos
Báez, Walter
Caselli, Alberto Tomás
Báez, Alejandro David
author_role author
author2 Sommer, Carlos Augusto
Haag, Maurício Barcelos
Báez, Walter
Caselli, Alberto Tomás
Báez, Alejandro David
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Monogenetic Volcanism
Geomorphology
Southern Volcanic Zone
Spatial Analysis
Geographic Information System
Andes
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Monogenetic Volcanism
Geomorphology
Southern Volcanic Zone
Spatial Analysis
Geographic Information System
Andes
Ciencias Exactas y Naturales
dc.description.none.fl_txt_mv Fil: Santos, Fernanda. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.
Fil: Sommer, Carlos. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.
Fil: Haag, Maurício. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil. Department of Earth Sciences, University of Toronto. Canada.
Fil: Báez, Walter. IBIGEO (Universidad Nacional de Salta - CONICET). Argentina.
Fil: Caselli. Alberto. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
Fil: Báez, Alejandro. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro, Argentina.
Monogenetic volcanoes are among the most common volcanic landforms on Earth. The morphology and distribution of small volcanoes can provide important information about eruption dynamics and tectonics. The Southern Volcanic Zone of the Andes (CSVZ) comprises one of the most active magmatic regions on Earth. Characterized by the presence of polygenetic volcanoes and calderas in a complex tectonic setting, this region also hosts hundreds of small, back-arc monogenetic volcanoes. In this contribution, we apply a Geographic Information System (GIS) that combines imagery data and digital elevation models to establish the first comprehensive dataset of monogenetic volcanoes in the CSVZ (38◦ to 40◦ S), exploring their eruption dynamics and relationship to tectonic and structural processes. Combining spatial analysis and geomorphological observations, we identify the presence of 335 monogenetic volcanoes distributed into nine clusters, now grouped in the Zapala Volcanic Field (ZVF). The ZVF is marked by the predominance of cinder cones (80%) followed by phreatomagmatic volcanoes (20%), suggesting some influence of external water in the eruption dynamics. Generally, monogenetic vents present a clear association with local and regional lineaments, suggesting a strong structural control on the occurrence of the monogenetic deposits in the ZVF. The higher vent densities are observed in the southern Loncopu´e Though, an important extensional feature related to tearing of the subducted Nazca plate underneath the South American Plate. Morphometric parameters of cinder cones indicate variable stress orientations in the CSVZ that possibly results from the oblique tectonics in the region. From north to south, the maximum principal stress rotates from NE-SW to E-W and becomes progressively less constrained as it distances from the current magmatic arc. Based on the relative ages, we map the evolution of monogenetic volcanism through time. Our results suggest a waning in the monogenetic activity in ZVF over time. When compared to monogenetic fields in the Central Andes, the ZVF is marked by higher vent densities and number phreatomagmatic landforms, with the absence of lava domes. This ultimately reflects the contrasting crustal structure and climate conditions of these two regions.
-
description Fil: Santos, Fernanda. Instituto de Geociencias, Universidade Federal do Rio Grande do Sul. Brasil.
publishDate 2022
dc.date.none.fl_str_mv 2022
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 Santos F., Sommer C., Haag M., Baez W., Caselli A., Baez A. (2022). Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina). Geomorphology; 402; 108130.
0169-555X
https://www.sciencedirect.com/science/article/pii/S0169555X2200023X?via%3Dihub#!
http://rid.unrn.edu.ar/handle/20.500.12049/8405
https://doi.org/10.1016/j.geomorph.2022.108130
identifier_str_mv Santos F., Sommer C., Haag M., Baez W., Caselli A., Baez A. (2022). Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina). Geomorphology; 402; 108130.
0169-555X
url https://www.sciencedirect.com/science/article/pii/S0169555X2200023X?via%3Dihub#!
http://rid.unrn.edu.ar/handle/20.500.12049/8405
https://doi.org/10.1016/j.geomorph.2022.108130
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.sciencedirect.com/journal/geomorphology
402
Geomorphology
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv El Sevier
publisher.none.fl_str_mv El Sevier
dc.source.none.fl_str_mv reponame:RID-UNRN (UNRN)
instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
collection RID-UNRN (UNRN)
instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
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score 12.559606