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dc.contributor.author
Aguilera, Mauricio
dc.contributor.author
Ureta, Gabriel
dc.contributor.author
Grosse, Pablo
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dc.contributor.author
Németh, Károly
dc.contributor.author
Aguilera, Felipe
dc.contributor.author
Vilches, Matias
dc.date.available
2023-02-13T11:12:10Z
dc.date.issued
2022-02
dc.identifier.citation
Aguilera, Mauricio; Ureta, Gabriel; Grosse, Pablo; Németh, Károly; Aguilera, Felipe; et al.; Geomorphological, morphometric, and spatial distribution analysis of the scoria cones in the Negros de Aras monogenetic volcanic field, northern Chile; Elsevier Science; Journal of Volcanology and Geothermal Research; 422; 2-2022; 1-17
dc.identifier.issn
0377-0273
dc.identifier.uri
http://hdl.handle.net/11336/187710
dc.description.abstract
The Negros de Aras monogenetic volcanic field in the Central Volcanic Zone of the Andes displays the highest concentration of scoria cones in northern Chile (0.23 per km2). It contains 66 vents, 22 of which are emission points of lava flows without an associated recognizable volcanic edifice, whereas 44 are typical scoria cones. Most vents are associated with basaltic andesite and andesite lava flows of up to 4.6 km in length. A few scoria cones show signs of either initial or final phreatomagmatic eruptions recorded in their pyroclastic successions. A geomorphological, morphometric, and spatial distribution analysis of the scoria cones of this volcanic field was carried out with the purpose of identifying the factors and processes that governed their emplacement, growth, and final morphology. The morphometric analysis was performed on 16 well-delimited scoria cones applying the MORVOLC algorithm using the TanDEM-X 12 m resolution digital elevation model. Analysis of the distribution and elongation of the craters of the scoria cones defines four alignments inferred to be related to the local and regional structural elements of the area. Volcanic activity seems to have been related to a N-S fault system with an E-W maximum stress orientation, favoring magma ascent and scoria cone emplacement following inherited fractures in these preferential orientations. The scoria cones show a wide range of morphologies and morphometries that can be related to different syn- and post-eruptive processes. Cones with large craters and high crater width / basal width ratios show clear evidence of phreatomagmatic eruptions (within their pyroclastic successions), whereas horseshoe-type cones are related to cone breaching or coeval lava flow effusion, and more pristine (i.e., relatively younger) cones are generally steeper.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CENTRAL VOLCANIC ZONE
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CHILE
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CINDER CONE
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EL NEGRILLAR
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MONOGENETIC VOLCANISM
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SOCOMPA VOLCANO
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Vulcanología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Geomorphological, morphometric, and spatial distribution analysis of the scoria cones in the Negros de Aras monogenetic volcanic field, northern Chile
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-02-09T16:03:59Z
dc.journal.volume
422
dc.journal.pagination
1-17
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Aguilera, Mauricio. Universidad Católica del Norte; Chile
dc.description.fil
Fil: Ureta, Gabriel. Universidad Católica del Norte; Chile
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Fil: Grosse, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Miguel Lillo; Argentina
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Fil: Németh, Károly. Massey University; Nueva Zelanda
dc.description.fil
Fil: Aguilera, Felipe. Universidad Católica del Norte; Chile
dc.description.fil
Fil: Vilches, Matias. Universidad Católica del Norte; Chile
dc.journal.title
Journal of Volcanology and Geothermal Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0377027321002870
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.jvolgeores.2021.107458
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