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dc.contributor.author
Pingel, Heiko
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dc.contributor.author
Strecker, Manfred R.
dc.contributor.author
Mulch, Andreas
dc.contributor.author
Alonso, Ricardo Narciso
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dc.contributor.author
Cottle, John
dc.contributor.author
Rohrmann, Alexander
dc.date.available
2021-10-07T19:33:10Z
dc.date.issued
2020-04
dc.identifier.citation
Pingel, Heiko; Strecker, Manfred R.; Mulch, Andreas; Alonso, Ricardo Narciso; Cottle, John; et al.; Late Cenozoic topographic evolution of the Eastern Cordillera and Puna Plateau margin in the southern Central Andes (NW Argentina); Elsevier Science; Earth and Planetary Science Letters; 535; 4-2020; 1-14; 116112
dc.identifier.issn
0012-821X
dc.identifier.uri
http://hdl.handle.net/11336/143196
dc.description.abstract
The Andes constitute an important orographic barrier in the southern hemisphere, impacting atmospheric circulation, the amount and distribution of rainfall, and Earth-surface processes in a highly asymmetric manner. In the Central Andes of NW Argentina, the Andean Plateau (Puna) and the intermontane basins of the adjacent Eastern Cordillera constitute geological archives that furnish spatiotemporal information on surface uplift and associated paleo-environmental change. Today, rainfall in NW Argentina is focused along the windward flanks of the Eastern Cordillera, while its intermontane basins and the Puna constitute high-elevation regions with strongly reduced rainfall. The present-day influence of these topographic characteristics on precipitation patterns is reflected by systematic changes in the hydrogen stable isotope ratios of meteoric water. Proxy archives from basin strata record past environmental conditions and provide insight into the nature of topographic growth through time. We present 34 new hydrogen isotopic compositions of volcanic glass (δDg), extracted from tuffs interbedded with the sedimentary deposits of three different regions across the eastern Andean margin between ca. 24°S and 25°S latitude. Combined with new zircon U-Pb geochronology, our data show clear spatiotemporal variations in δDg correlating with topographic growth and ensuing orographic effects during the Miocene and Pleistocene. In particular, variations in δDg indicate that the Pastos Grandes (Puna) and the Toro (Eastern Cordillera) basins had attained modern elevations by ca. 8 and 6 Ma, respectively. A strong positive shift in the δDg record of the Toro Basin after 840 ka coincides with deposition of thick fluvial/alluvial conglomerates suggesting orographically induced aridification due to progressive range uplift to the east. Other δDg records from the Eastern Cordillera show similar, but diachronous events emphasizing the importance of regional tectonics for environmental change with implications for the formation of orogenic plateaus.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
EASTERN CORDILLERA
dc.subject
NW ARGENTINA
dc.subject
OROGRAPHIC BARRIER FORMATION
dc.subject
PUNA PLATEAU
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SURFACE UPLIFT
dc.subject
TECTONICS
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
Late Cenozoic topographic evolution of the Eastern Cordillera and Puna Plateau margin in the southern Central Andes (NW Argentina)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-07T14:40:59Z
dc.identifier.eissn
0012-821X
dc.journal.volume
535
dc.journal.pagination
1-14; 116112
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Pingel, Heiko. Universitat Potsdam; Alemania
dc.description.fil
Fil: Strecker, Manfred R.. Universitat Potsdam; Alemania
dc.description.fil
Fil: Mulch, Andreas. Senckenberg Biodiversität und Klima Forschungszentrum; Alemania. Goethe Universitat Frankfurt; Alemania
dc.description.fil
Fil: Alonso, Ricardo Narciso. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Tucumán. Instituto Superior de Correlación Geológica. Grupo Vinculado al INSUGEO- Centro de Estudios Geologicos Andinos; Argentina. Universidad Nacional de Salta; Argentina
dc.description.fil
Fil: Cottle, John. University of California; Estados Unidos
dc.description.fil
Fil: Rohrmann, Alexander. Universitat Potsdam; Alemania
dc.journal.title
Earth and Planetary Science Letters
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.epsl.2020.116112
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0012821X20300558
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