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dc.contributor.author
Davila, Federico Miguel
dc.contributor.author
Lithgow Bertelloni, Carolina
dc.contributor.author
Gimenez, Mario Ernesto
dc.date.available
2018-08-10T21:36:59Z
dc.date.issued
2010-06-28
dc.identifier.citation
Davila, Federico Miguel; Lithgow Bertelloni, Carolina; Gimenez, Mario Ernesto; Tectonic and dynamic controls on the topography and subsidence of the Argentine Pampas: The role of the flat slab; Elsevier Science; Earth and Planetary Science Letters; 295; 1-2; 28-6-2010; 187-194
dc.identifier.issn
0012-821X
dc.identifier.uri
http://hdl.handle.net/11336/55039
dc.description.abstract
We analyze the Pampean foreland (the Pampas) along the modern flat-slab segment of the south-central Andes between 31° and 33° South latitude and to the east of the Argentine "flat-slab" province, using flexural and gravity studies and computations of dynamic topography. Bouguer anomalies and flexural analysis predict a foredeep of ~250. km width and a peripheral bulge amplitude of ~25. m, which match the regional morphologies of the modern Argentine Pampean Plain. However, these studies do not account for the subsurface Miocene-Quaternary basin preservation, represented by sedimentary thicknesses > 400 m and with depocenters > 400 km eastward with respect to flexural models. The discrepancy suggests that two mechanisms, acting at different wavelengths, influence the Argentine Pampas. The basin preservation is likely the result of a large-scale geodynamic forcing. Models of mantle flow, driven by realistic flat-slab subduction geometry and density contrasts, reproduce the depocenter location and the wavelength of subsidence as well as most of the remaining amplitude. Nonetheless, more sophisticated studies (e.g. considering lateral viscosity variations in the mantle wedge) might help reduce the dynamic amplitudes and better reproduce the observed geological record.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Andean Foreland
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Argentina
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Basin Analysis
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Dynamic Topography
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Flat Subduction
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Pampas Plain
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Meteorología y Ciencias Atmosféricas
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Tectonic and dynamic controls on the topography and subsidence of the Argentine Pampas: The role of the flat slab
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-02T15:30:27Z
dc.journal.volume
295
dc.journal.number
1-2
dc.journal.pagination
187-194
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Davila, Federico Miguel. 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
dc.description.fil
Fil: Lithgow Bertelloni, Carolina. University College London; Estados Unidos
dc.description.fil
Fil: Gimenez, Mario Ernesto. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto Geofísico Sismológico Volponi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Earth and Planetary Science Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0012821X10002232
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.epsl.2010.03.039
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