Morphometry of terrestrial shield volcanoes

Shield volcanoes are described as low-angle edifices built primarily by the accumulation of successive lava flows. This generic view of shield volcano morphology is based on a limited number of monogenetic shields from Icelandand Mexico, and a small set of large oceanic islands (Hawaii, Galápagos)....

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Detalles Bibliográficos
Autores: Grosse, Pablo, Kervyn, Matthieu
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/81219
Acceso en línea:http://hdl.handle.net/11336/81219
Access Level:acceso abierto
Palabra clave:Shield Volcanoes
Shield-Like Volcanoes
Morphometry
Hierarchical Cluster Analysis
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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spelling Morphometry of terrestrial shield volcanoesGrosse, PabloKervyn, MatthieuShield VolcanoesShield-Like VolcanoesMorphometryHierarchical Cluster Analysishttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Shield volcanoes are described as low-angle edifices built primarily by the accumulation of successive lava flows. This generic view of shield volcano morphology is based on a limited number of monogenetic shields from Icelandand Mexico, and a small set of large oceanic islands (Hawaii, Galápagos). Here, the morphometry of 158 monogenetic and polygenetic shield volcanoes is analyzed quantitatively from 90-meter resolution SRTM DEMs using the MORVOLC algorithm. An additional set of 24 lava-dominated ?shield-like? volcanoes, considered so far as stratovolcanoes, are documented for comparison. Results show that there is a large variation in shield size (volumes from 0.1 to >1000 km3), profile shape (height/basal width (H/WB) ratios mostly from 0.01 to 0.1), flank slope gradients (average slopes mostly from 1° to 15°), elongation and summit truncation. Although there is no clear-cut morphometric difference between shield volcanoes and stratovolcanoes, an approximate threshold can be drawnat 12° average slope and 0.10 H/WB ratio. Principal component analysis of the obtained database enables to identify four key morphometric descriptors: size, steepness, plan shape and truncation. Hierarchical cluster analysis ofthese descriptors results in 12 end-member shield types, with intermediate cases defining a continuum of morphologies. The shield types can be linked in terms of growth stages and shape evolution, related to (1) magma composition and rheology, effusion rate and lava/pyroclast ratio, which will condition edifice steepness; (2) spatial distribution of vents, in turn related to the magmatic feeding system and the tectonic framework, which will control edifice plan shape; and (3) caldera formation, which will condition edifice truncation.Fil: Grosse, Pablo. Fundación Miguel Lillo. Dirección de Geología. Instituto de Minerología y Petrografia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Kervyn, Matthieu. Vrije Universiteit Brussel; BélgicaElsevier Science2018-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/81219Grosse, Pablo; Kervyn, Matthieu; Morphometry of terrestrial shield volcanoes; Elsevier Science; Geomorphology; 304; 3-2018; 1-140169-555XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://linkinghub.elsevier.com/retrieve/pii/S0169555X17305263info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2017.12.017info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:33:22Zoai:ri.conicet.gov.ar:11336/81219instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:33:23.062CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Morphometry of terrestrial shield volcanoes
title Morphometry of terrestrial shield volcanoes
spellingShingle Morphometry of terrestrial shield volcanoes
Grosse, Pablo
Shield Volcanoes
Shield-Like Volcanoes
Morphometry
Hierarchical Cluster Analysis
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short Morphometry of terrestrial shield volcanoes
title_full Morphometry of terrestrial shield volcanoes
title_fullStr Morphometry of terrestrial shield volcanoes
title_full_unstemmed Morphometry of terrestrial shield volcanoes
title_sort Morphometry of terrestrial shield volcanoes
dc.creator.none.fl_str_mv Grosse, Pablo
Kervyn, Matthieu
author Grosse, Pablo
author_facet Grosse, Pablo
Kervyn, Matthieu
author_role author
author2 Kervyn, Matthieu
author2_role author
dc.subject.none.fl_str_mv Shield Volcanoes
Shield-Like Volcanoes
Morphometry
Hierarchical Cluster Analysis
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic Shield Volcanoes
Shield-Like Volcanoes
Morphometry
Hierarchical Cluster Analysis
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description Shield volcanoes are described as low-angle edifices built primarily by the accumulation of successive lava flows. This generic view of shield volcano morphology is based on a limited number of monogenetic shields from Icelandand Mexico, and a small set of large oceanic islands (Hawaii, Galápagos). Here, the morphometry of 158 monogenetic and polygenetic shield volcanoes is analyzed quantitatively from 90-meter resolution SRTM DEMs using the MORVOLC algorithm. An additional set of 24 lava-dominated ?shield-like? volcanoes, considered so far as stratovolcanoes, are documented for comparison. Results show that there is a large variation in shield size (volumes from 0.1 to >1000 km3), profile shape (height/basal width (H/WB) ratios mostly from 0.01 to 0.1), flank slope gradients (average slopes mostly from 1° to 15°), elongation and summit truncation. Although there is no clear-cut morphometric difference between shield volcanoes and stratovolcanoes, an approximate threshold can be drawnat 12° average slope and 0.10 H/WB ratio. Principal component analysis of the obtained database enables to identify four key morphometric descriptors: size, steepness, plan shape and truncation. Hierarchical cluster analysis ofthese descriptors results in 12 end-member shield types, with intermediate cases defining a continuum of morphologies. The shield types can be linked in terms of growth stages and shape evolution, related to (1) magma composition and rheology, effusion rate and lava/pyroclast ratio, which will condition edifice steepness; (2) spatial distribution of vents, in turn related to the magmatic feeding system and the tectonic framework, which will control edifice plan shape; and (3) caldera formation, which will condition edifice truncation.
publishDate 2018
dc.date.none.fl_str_mv 2018-03
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 http://hdl.handle.net/11336/81219
Grosse, Pablo; Kervyn, Matthieu; Morphometry of terrestrial shield volcanoes; Elsevier Science; Geomorphology; 304; 3-2018; 1-14
0169-555X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/81219
identifier_str_mv Grosse, Pablo; Kervyn, Matthieu; Morphometry of terrestrial shield volcanoes; Elsevier Science; Geomorphology; 304; 3-2018; 1-14
0169-555X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://linkinghub.elsevier.com/retrieve/pii/S0169555X17305263
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geomorph.2017.12.017
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,812455

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