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dc.contributor.author
Hain, M. P.
dc.contributor.author
Strecker, M. R.
dc.contributor.author
Bookhagen, B.
dc.contributor.author
Alonso, Ricardo Narciso
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dc.contributor.author
Pingel, H.
dc.contributor.author
Schmitt, A. K.
dc.date.available
2017-02-17T20:27:55Z
dc.date.issued
2011-04
dc.identifier.citation
Hain, M. P.; Strecker, M. R.; Bookhagen, B.; Alonso, Ricardo Narciso; Pingel, H.; et al.; Neogene to Quaternary broken foreland formation and sedimentation dynamics in the Andes of NW Argentina (25°S); American Geophysical Union; Tectonics; 30; 2; 4-2011; 1-27
dc.identifier.uri
http://hdl.handle.net/11336/13171
dc.description.abstract
The northwest Argentine Andes constitute a premier natural laboratory to assess the complex interactions between isolated uplifts, orographic precipitation gradients, and related erosion and sedimentation patterns. Here we present new stratigraphic observations and age information from intermontane basin sediments to elucidate the Neogene to Quaternary shortening history and associated sediment dynamics of the broken Salta foreland. This part of the Andean orogen, which comprises an array of basement-cored range uplifts, is located at ∼25°S and lies to the east of the arid intraorogenic Altiplano/Puna plateau. In the Salta foreland, spatially and temporally disparate range uplift along steeply dipping inherited faults has resulted in foreland compartmentalization with steep basin-to-basin precipitation gradients. Sediment architecture and facies associations record a three-phase (∼10, ∼5, and <2 Ma), east directed, yet unsystematic evolution of shortening, foreland fragmentation, and ensuing changes in precipitation and sediment transport. The provenance signatures of these deposits reflect the trapping of sediments in the intermontane basins of the Andean hinterland, as well as the evolution of a severed fluvial network. Present-day moisture supply to the hinterland is determined by range relief and basin elevation. The conspiring effects of range uplift and low rainfall help the entrapment and long-term storage of sediments, ultimately raising basin elevation in the hinterland, which may amplify aridification in the orogen interior.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
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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
Neogene
dc.subject
Foreland Formation
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Sedimentatio Dynamics
dc.subject
Andes
dc.subject.classification
Geología
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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
Neogene to Quaternary broken foreland formation and sedimentation dynamics in the Andes of NW Argentina (25°S)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-02-15T14:54:37Z
dc.identifier.eissn
1944-9194
dc.journal.volume
30
dc.journal.number
2
dc.journal.pagination
1-27
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Washington DC
dc.description.fil
Fil: Hain, M. P.. Universitat Potsdam; Alemania. University of Princeton; Estados Unidos
dc.description.fil
Fil: Strecker, M. R.. Universitat Potsdam; Alemania
dc.description.fil
Fil: Bookhagen, B.. University of California; Estados Unidos
dc.description.fil
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Salta; Argentina
dc.description.fil
Fil: Pingel, H.. Universitat Potsdam; Alemania
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Fil: Schmitt, A. K.. University of California; Estados Unidos
dc.journal.title
Tectonics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1029/2010TC002703
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2010TC002703/abstract
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