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dc.contributor.author
Giambiagi, Laura Beatriz
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dc.contributor.author
Ramos, Victor Alberto
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dc.date.available
2018-03-26T20:21:44Z
dc.date.issued
2002-12
dc.identifier.citation
Giambiagi, Laura Beatriz; Ramos, Victor Alberto; Structural evolution of the Andes in a transitional zone between flat and normal subduction (33°30′-33°45′S), Argentina and Chile; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 15; 1; 12-2002; 101-116
dc.identifier.issn
0895-9811
dc.identifier.uri
http://hdl.handle.net/11336/40028
dc.description.abstract
The sector of the Andes studied in this paper (33°30′-33°45′S) presents a key region to study the relationship between tectonic setting and deformation history in a transitional zone between flat (north of 33°S) and normal (south of 33°45′S) subduction segments. The Andes at these latitudes are primarily composed of the Neogene Aconcagua fold-and-thrust belt and the basement-block uplift of the Cordillera Frontal. Detailed mapping has revealed that the structure within the inner part of the fold-and-thrust belt resulted from both thin-and thick-skinned tectonic interactions. In the outer part, displacement is transferred to Mesozoic décollement levels, accounting for a thin-skinned architecture. Geographically, the switch from thick- to -thin skinned tectonics occurs near the border between Chile and Argentina. Although the geometry of the subducted Nazca Plate may have influenced the timing and style of deformation in the foreland, plate geometry alone does not adequately explain the style of deformation within the fold-and-thrust belt. Here it is shown that the change in deformation style in the fold-and-thrust belt correlates with the location of pre-existing Mesozoic structure, and specifically that Neogene-age thick-skinned thrusting was controlled by the presence of Mesozoic margin-boundary normal faults. Deformation in this region of the Andean fold-and-thrust belt was thus controlled by a combination of tectonic setting and pre-existing extensional structure. © 2002 Elsevier Science Ltd. All rights reserved.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Andes
dc.subject
Fold-And-Thrust Belt
dc.subject
Mesozoic Anisotropy
dc.subject
Neogene Deformation
dc.subject
Subduction
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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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
Structural evolution of the Andes in a transitional zone between flat and normal subduction (33°30′-33°45′S), Argentina and 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
2018-03-16T15:28:27Z
dc.journal.volume
15
dc.journal.number
1
dc.journal.pagination
101-116
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
South Carolina
dc.description.fil
Fil: Giambiagi, Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina
dc.description.fil
Fil: Ramos, Victor Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina
dc.journal.title
Journal of South American Earth Sciences
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981102000081
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/S0895-9811(02)00008-1
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