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dc.contributor.author
Giambiagi, Laura Beatriz
dc.contributor.author
Mescua, Jose Francisco
dc.contributor.author
Bechis, Florencia
dc.contributor.author
Tassara Oddo, Andres Humberto
dc.contributor.author
Hoke, Gregory D.
dc.date.available
2018-09-04T19:24:46Z
dc.date.issued
2012-07
dc.identifier.citation
Giambiagi, Laura Beatriz; Mescua, Jose Francisco; Bechis, Florencia; Tassara Oddo, Andres Humberto; Hoke, Gregory D.; Thrust belts of the southern Central Andes: Along-strike variations in shortening, topography, crustal geometry, and denudation; Geological Society of America; Geological Society Of America Bulletin; 124; 7-8; 7-2012; 1339-1351
dc.identifier.issn
0016-7606
dc.identifier.uri
http://hdl.handle.net/11336/58279
dc.description.abstract
The Andean fold-and-thrust belts of westcentral Argentina (33 S and 36 S), above the normal subduction segment, present important along-strike variations in mean topographic uplift, structural elevation, amount and rate of shortening, and crustal root geometry. To analyze the controlling factors of these latitudinal changes, we compare these parameters and the chronology of deformation along 11 balanced crustal cross sections across the thrust belts between 70 W and 69 W, where the majority of the uppercrustal deformation is concentrated, and reconstruct the Moho geometry along the transects. We propose two models of crustal deformation: a 33 40 S model, where the locus of upper-crustal shortening is aligned with respect to the maximum crustal thickness, and a 35 40 S model, where the uppercrustal shortening is uncoupled from the lower-crustal deformation and thickening. This degree of coupling between brittle upper crust and ductile lower crust deformation has strong influence on mean topographic ele vation. In the northern sector of the study area, an initial thick and felsic crust favors the coupling model, while in the southern sector, a thin and mafic lower crust allows the uncoupling model. Our results indicate that interplate dynamics may control the overall pattern of tectonic shortening; however, local variations in mean topographic elevation, deformation styles, and crustal root geometry are not fully explained and are more likely to be due to upper-plate lithospheric strength variations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Geological Society of America
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Mountain Building
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Structural Shortening
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Topographic Uplift
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Tectonic Evolution
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Crustal Deformation
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Geología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Thrust belts of the southern Central Andes: Along-strike variations in shortening, topography, crustal geometry, and denudation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-04T18:32:45Z
dc.journal.volume
124
dc.journal.number
7-8
dc.journal.pagination
1339-1351
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Boulder
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
dc.description.fil
Fil: Mescua, Jose Francisco. 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
dc.description.fil
Fil: Bechis, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio. Universidad Nacional de Río Negro. Instituto de Investigaciones en Diversidad Cultural y Procesos de Cambio; Argentina
dc.description.fil
Fil: Tassara Oddo, Andres Humberto. Universidad de Concepción; Chile
dc.description.fil
Fil: Hoke, Gregory D.. Syracuse University; Estados Unidos
dc.journal.title
Geological Society Of America Bulletin
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://pubs.geoscienceworld.org/gsabulletin/article-lookup/124/7-8/1339
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1130/B30609.1


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