Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc

Autores
Cosentino, Nicolas Juan; Morgan, J. P.; Jordan, T. E.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The high elevation of the onshore fore-arc platform in northern Chile cannot be accounted for by previously proposed tectonic mechanisms such as coastal underplating and coseismic deformation, whose topographic effects are restricted to the coastal zone. Subduction channels have been recognized both in modern and fossil noncollisional convergent margins, yet their role on fore-arc surface elevation has not been sufficiently explored. Long-term viscoelastic flow in a strengthened, finite-thickness subduction channel promotes coupled offshore fore-arc subsidence and onshore fore-arc platform uplift. We propose that the onset of protracted hyperaridity in the coastal zone of northern Chile starved the trench of sediments, inducing a rise in shear stress at the top of the subduction channel sufficient to trigger hundreds of meters of uplift of the onshore fore-arc basin surface, most of which took place by the middle Miocene. This is consistent with latitudinal correlations between coastal precipitation, trench sediment thickness and onshore fore-arc topography along the Chilean margin, and with available paleoclimatic and paleotopographic evidence in northern Chile.
Fil: Cosentino, Nicolas Juan. Cornell University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Morgan, J. P.. University of London; Reino Unido
Fil: Jordan, T. E.. Cornell University; Estados Unidos
Materia
ELEVATION
FINITE ELEMENT METHOD
FORE ARC
NORTHERN CHILE
SUBDUCTION CHANNEL
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/88938
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore ArcCosentino, Nicolas JuanMorgan, J. P.Jordan, T. E.ELEVATIONFINITE ELEMENT METHODFORE ARCNORTHERN CHILESUBDUCTION CHANNELhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The high elevation of the onshore fore-arc platform in northern Chile cannot be accounted for by previously proposed tectonic mechanisms such as coastal underplating and coseismic deformation, whose topographic effects are restricted to the coastal zone. Subduction channels have been recognized both in modern and fossil noncollisional convergent margins, yet their role on fore-arc surface elevation has not been sufficiently explored. Long-term viscoelastic flow in a strengthened, finite-thickness subduction channel promotes coupled offshore fore-arc subsidence and onshore fore-arc platform uplift. We propose that the onset of protracted hyperaridity in the coastal zone of northern Chile starved the trench of sediments, inducing a rise in shear stress at the top of the subduction channel sufficient to trigger hundreds of meters of uplift of the onshore fore-arc basin surface, most of which took place by the middle Miocene. This is consistent with latitudinal correlations between coastal precipitation, trench sediment thickness and onshore fore-arc topography along the Chilean margin, and with available paleoclimatic and paleotopographic evidence in northern Chile.Fil: Cosentino, Nicolas Juan. Cornell University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Morgan, J. P.. University of London; Reino UnidoFil: Jordan, T. E.. Cornell University; Estados UnidosBlackwell Publishing Ltd2018-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88938Cosentino, Nicolas Juan; Morgan, J. P.; Jordan, T. E.; Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc; Blackwell Publishing Ltd; Journal of Geophysical Research: Solid Earth; 123; 10; 10-2018; 9121-91352169-93132169-9356CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JB016109info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JB016109info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:50:58Zoai:ri.conicet.gov.ar:11336/88938instacron: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:34982025-10-22 11:50:58.61CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
title Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
spellingShingle Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
Cosentino, Nicolas Juan
ELEVATION
FINITE ELEMENT METHOD
FORE ARC
NORTHERN CHILE
SUBDUCTION CHANNEL
title_short Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
title_full Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
title_fullStr Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
title_full_unstemmed Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
title_sort Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc
dc.creator.none.fl_str_mv Cosentino, Nicolas Juan
Morgan, J. P.
Jordan, T. E.
author Cosentino, Nicolas Juan
author_facet Cosentino, Nicolas Juan
Morgan, J. P.
Jordan, T. E.
author_role author
author2 Morgan, J. P.
Jordan, T. E.
author2_role author
author
dc.subject.none.fl_str_mv ELEVATION
FINITE ELEMENT METHOD
FORE ARC
NORTHERN CHILE
SUBDUCTION CHANNEL
topic ELEVATION
FINITE ELEMENT METHOD
FORE ARC
NORTHERN CHILE
SUBDUCTION CHANNEL
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The high elevation of the onshore fore-arc platform in northern Chile cannot be accounted for by previously proposed tectonic mechanisms such as coastal underplating and coseismic deformation, whose topographic effects are restricted to the coastal zone. Subduction channels have been recognized both in modern and fossil noncollisional convergent margins, yet their role on fore-arc surface elevation has not been sufficiently explored. Long-term viscoelastic flow in a strengthened, finite-thickness subduction channel promotes coupled offshore fore-arc subsidence and onshore fore-arc platform uplift. We propose that the onset of protracted hyperaridity in the coastal zone of northern Chile starved the trench of sediments, inducing a rise in shear stress at the top of the subduction channel sufficient to trigger hundreds of meters of uplift of the onshore fore-arc basin surface, most of which took place by the middle Miocene. This is consistent with latitudinal correlations between coastal precipitation, trench sediment thickness and onshore fore-arc topography along the Chilean margin, and with available paleoclimatic and paleotopographic evidence in northern Chile.
Fil: Cosentino, Nicolas Juan. Cornell University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina
Fil: Morgan, J. P.. University of London; Reino Unido
Fil: Jordan, T. E.. Cornell University; Estados Unidos
description The high elevation of the onshore fore-arc platform in northern Chile cannot be accounted for by previously proposed tectonic mechanisms such as coastal underplating and coseismic deformation, whose topographic effects are restricted to the coastal zone. Subduction channels have been recognized both in modern and fossil noncollisional convergent margins, yet their role on fore-arc surface elevation has not been sufficiently explored. Long-term viscoelastic flow in a strengthened, finite-thickness subduction channel promotes coupled offshore fore-arc subsidence and onshore fore-arc platform uplift. We propose that the onset of protracted hyperaridity in the coastal zone of northern Chile starved the trench of sediments, inducing a rise in shear stress at the top of the subduction channel sufficient to trigger hundreds of meters of uplift of the onshore fore-arc basin surface, most of which took place by the middle Miocene. This is consistent with latitudinal correlations between coastal precipitation, trench sediment thickness and onshore fore-arc topography along the Chilean margin, and with available paleoclimatic and paleotopographic evidence in northern Chile.
publishDate 2018
dc.date.none.fl_str_mv 2018-10
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/11336/88938
Cosentino, Nicolas Juan; Morgan, J. P.; Jordan, T. E.; Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc; Blackwell Publishing Ltd; Journal of Geophysical Research: Solid Earth; 123; 10; 10-2018; 9121-9135
2169-9313
2169-9356
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88938
identifier_str_mv Cosentino, Nicolas Juan; Morgan, J. P.; Jordan, T. E.; Modeling trench sediment-controlled flow in subduction channels: Implications for the topographic evolution of the Central Andean Fore Arc; Blackwell Publishing Ltd; Journal of Geophysical Research: Solid Earth; 123; 10; 10-2018; 9121-9135
2169-9313
2169-9356
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JB016109
info:eu-repo/semantics/altIdentifier/doi/10.1029/2018JB016109
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 Blackwell Publishing Ltd
publisher.none.fl_str_mv Blackwell Publishing Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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 12.982451

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