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dc.contributor.author
Salze, Méline
dc.contributor.author
Martinod, Joseph
dc.contributor.author
Guillaume, Benjamin
dc.contributor.author
Kermarrec, Jean Jacques
dc.contributor.author
Ghiglione, Matias
dc.contributor.author
Sue, Christian
dc.date.available
2019-09-30T19:15:48Z
dc.date.issued
2018-07
dc.identifier.citation
Salze, Méline; Martinod, Joseph; Guillaume, Benjamin; Kermarrec, Jean Jacques; Ghiglione, Matias; et al.; Trench-parallel spreading ridge subduction and its consequences for the geological evolution of the overriding plate: Insights from analogue models and comparison with the Neogene subduction beneath Patagonia; Elsevier Science; Tectonophysics; 737; 7-2018; 27-39
dc.identifier.issn
0040-1951
dc.identifier.uri
http://hdl.handle.net/11336/84837
dc.description.abstract
A series of 3-D asthenospheric-scale analogue models have been conducted in the laboratory in order to simulate the arrival of a spreading ridge at the trench and understand its effect on plate kinematics, slab geometry, and on the deformation of the overriding plate. These models are made of a two-layered linearly viscous system simulating the lithosphere and asthenosphere. We reproduce the progressive decrease in thickness of the oceanic lithosphere at the trench. We measure plate kinematics, slab geometry and upper plate deformation. Our experiments reveal that the subduction of a thinning plate beneath a freely moving overriding continent favors a decrease of the subduction velocity and an increase of the oceanic slab dip. When the upper plate motion is imposed by lateral boundary conditions, the evolution of the subducting plate geometry largely differs depending on the velocity of the overriding plate: the larger its trenchward velocity, the smaller the superficial dip of the oceanic slab. A slab flattening episode may occur resulting from the combined effect of the subduction of an increasingly thinner plate and the trenchward motion of a fast overriding plate. Slab flattening would be marked by an increase of the distance between the trench and the volcanic arc in nature. This phenomenon may explain the reported Neogene eastward motion of the volcanic arc in the Southern Patagonia that occurred prior to the subduction of the Chile Ridge.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ANALOGUE MODELING
dc.subject
LITHOSPHERE
dc.subject
OCEANIC RIDGE
dc.subject
PATAGONIA
dc.subject
SLAB PULL FORCE
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SOUTHERNMOST ANDES
dc.subject
SUBDUCTION
dc.subject.classification
Geociencias multidisciplinaria
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Trench-parallel spreading ridge subduction and its consequences for the geological evolution of the overriding plate: Insights from analogue models and comparison with the Neogene subduction beneath Patagonia
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-09-25T17:57:04Z
dc.journal.volume
737
dc.journal.pagination
27-39
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Salze, Méline. Universite de Bourgogne; Francia
dc.description.fil
Fil: Martinod, Joseph. Université de Savoie Mont Blanc; Francia
dc.description.fil
Fil: Guillaume, Benjamin. Universite de Rennes I; Francia
dc.description.fil
Fil: Kermarrec, Jean Jacques. Universite de Rennes I; Francia
dc.description.fil
Fil: Ghiglione, Matias. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
dc.description.fil
Fil: Sue, Christian. Universite de Bourgogne; Francia
dc.journal.title
Tectonophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.tecto.2018.04.018
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0040195118301616


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