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Abstract:

The surface response, in terms of drainage pattern changes, to the Cretaceous geodynamic reorganization of the Andean subduction zone between 36°S and 41°S is reconstructed through the geochronology-based provenance study of alluvial detrital zircons. The age spectra obtained by 500 spot U-Pb ages record an eastward provenance of detritus coming from the foreland during the Early Cretaceous backarc extensional stage, followed by westwardsourced clastics coming from the Cordillera during the Cenomanian. This drainage pattern reversal fits the regional unconformity in the sedimentary record that is linked to the geodynamic reorganization of the continental margin from an extensional to a compressional regime, forcing the Neuquén Basin to evolve from a retroarc to a foreland stage. After this inversion, the clastic systems progressively returned to be mainly fed by the foreland, due to the uplift of the peripheral bulge as a consequence of the Late Cretaceous thrust front migration. This tectonic evolution of the Neuquén Basin and the related response of the drainage pattern are thought to be the surface expression of the dip decrease of the Benioff subduction zone. © 2012 Geological Society of America.

Registro:

Documento: Artículo
Título:Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin
Autor:Di Giulio, A.; Ronchi, A.; Sanfilippo, A.; Tiepolo, M.; Pimentel, M.; Ramos, V.A.
Filiación:Dipartimento di Scienze della Terra e dell'Ambiente, Via Ferrata 1, 27100 Pavia, Italy
CNR Istituto di Geoscienze e Georisorse, Unità Operativa di Pavia, Via Ferrata 1, 27100 Pavia, Italy
Geochronology Laboratory, Universidade de Brasilia, Brasília CEP 70910-900, Brazil
Laboratorio de Tectónica Andina, IDEAN, Universidad de Buenos Aires-CONICET, Buenos Aires, Argentina
Palabras clave:Binary alloys; Geochronology; Geodynamics; Lead alloys; Sedimentology; Silicate minerals; Uranium alloys; Zircon; Continental margin; Drainage patterns; Geodynamic evolution; Provenance studies; Sedimentary records; Sedimentary response; Surface expression; Tectonic evolution; Catchments; Benioff zone; Cretaceous; foreland basin; geochronology; geodynamics; provenance; subduction zone; tectonic evolution; uranium-lead dating; Andes; Argentina; Neuquen Basin
Año:2012
Volumen:40
Número:6
Página de inicio:559
Página de fin:562
DOI: http://dx.doi.org/10.1130/G33052.1
Título revista:Geology
Título revista abreviado:Geology
ISSN:00917613
CODEN:GLGYB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00917613_v40_n6_p559_DiGiulio

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Citas:

---------- APA ----------
Di Giulio, A., Ronchi, A., Sanfilippo, A., Tiepolo, M., Pimentel, M. & Ramos, V.A. (2012) . Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin. Geology, 40(6), 559-562.
http://dx.doi.org/10.1130/G33052.1
---------- CHICAGO ----------
Di Giulio, A., Ronchi, A., Sanfilippo, A., Tiepolo, M., Pimentel, M., Ramos, V.A. "Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin" . Geology 40, no. 6 (2012) : 559-562.
http://dx.doi.org/10.1130/G33052.1
---------- MLA ----------
Di Giulio, A., Ronchi, A., Sanfilippo, A., Tiepolo, M., Pimentel, M., Ramos, V.A. "Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin" . Geology, vol. 40, no. 6, 2012, pp. 559-562.
http://dx.doi.org/10.1130/G33052.1
---------- VANCOUVER ----------
Di Giulio, A., Ronchi, A., Sanfilippo, A., Tiepolo, M., Pimentel, M., Ramos, V.A. Detrital zircon provenance from the Neuquén Basin (south-central Andes): Cretaceous geodynamic evolution and sedimentary response in a retroarc-foreland basin. Geology. 2012;40(6):559-562.
http://dx.doi.org/10.1130/G33052.1