Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity

Autores
Schildgen, Taylor F; Robinson, Ruth A. J.; Savi, Sara; Phillips, William M.; Spencer, Joel Q. G.; Bookhagen, Bodo; Scherler, Dirk; Tofelde, Stefanie; Alonso, Ricardo Narciso; Kubik, Peter W.; Binnie, Steven A.; Strecker, Manfred R.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fluvial fill terraces preserve sedimentary archives of landscape responses to climate change, typically over millennial timescales. In the Humahuaca Basin of NW Argentina (Eastern Cordillera, southern Central Andes), our 29 new optically stimulated luminescence ages of late Pleistocene fill terrace sediments demonstrate that the timing of past river aggradation occurred over different intervals on the western and eastern sides of the valley, despite their similar bedrock lithology, mean slopes, and precipitation. In the west, aggradation coincided with periods of increasing precipitation, while in the east, aggradation coincided with decreasing precipitation or more variable conditions. Erosion rates and grain size dependencies in our cosmogenic 10Be analyses of modern and fill terrace sediments reveal an increased importance of landsliding compared to today on the west side during aggradation, but of similar importance during aggradation on the east side. Differences in the timing of aggradation and the 10Be data likely result from differences in valley geometry, which causes sediment to be temporarily stored in perched basins on the east side. It appears as if periods of increasing precipitation triggered landslides throughout the region, which induced aggradation in the west, but blockage of the narrow bedrock gorges downstream from the perched basins in the east. As such, basin geometry and fluvial connectivity appear to strongly influence the timing of sediment movement through the system. For larger basins that integrate subbasins with differing geometries or degrees of connectivity (like Humahuaca), sedimentary responses to climate forcing are likely attenuated.
Fil: Schildgen, Taylor F. German Research Centre For Geosciences; Alemania. Universitat Potsdam; Alemania
Fil: Robinson, Ruth A. J.. University Of St Andrews; Reino Unido
Fil: Savi, Sara. Universitat Potsdam; Alemania
Fil: Phillips, William M.. University Of Idaho; Estados Unidos
Fil: Spencer, Joel Q. G.. Kansas State University; Estados Unidos
Fil: Bookhagen, Bodo. Universitat Potsdam; Alemania
Fil: Scherler, Dirk. Freie Universitat Berlin; Alemania. German Research Centre For Geosciences; Alemania
Fil: Tofelde, Stefanie. Universitat Potsdam; Alemania
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kubik, Peter W.. Eidgenossische Technische Hochschule Zurich; Suiza
Fil: Binnie, Steven A.. Universitat Zu Köln; Alemania
Fil: Strecker, Manfred R.. Universitat Potsdam; Alemania
Materia
BERYLIUM-10
FLUVIAL TERRACES
HUMAHUACA BASIN
LANDSCAPE CONNECTIVITY
OPTICALLY STIMULATED LUMINESCENCE
SOUTH AMERICAN MONSOON SYSTEM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17504
Acceder
id CONICETDig_d590d2bdcb17cffe33b71c09f5b89bc5
oai_identifier_str oai:ri.conicet.gov.ar:11336/17504
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivitySchildgen, Taylor FRobinson, Ruth A. J.Savi, SaraPhillips, William M.Spencer, Joel Q. G.Bookhagen, BodoScherler, DirkTofelde, StefanieAlonso, Ricardo NarcisoKubik, Peter W.Binnie, Steven A.Strecker, Manfred R.BERYLIUM-10FLUVIAL TERRACESHUMAHUACA BASINLANDSCAPE CONNECTIVITYOPTICALLY STIMULATED LUMINESCENCESOUTH AMERICAN MONSOON SYSTEMhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Fluvial fill terraces preserve sedimentary archives of landscape responses to climate change, typically over millennial timescales. In the Humahuaca Basin of NW Argentina (Eastern Cordillera, southern Central Andes), our 29 new optically stimulated luminescence ages of late Pleistocene fill terrace sediments demonstrate that the timing of past river aggradation occurred over different intervals on the western and eastern sides of the valley, despite their similar bedrock lithology, mean slopes, and precipitation. In the west, aggradation coincided with periods of increasing precipitation, while in the east, aggradation coincided with decreasing precipitation or more variable conditions. Erosion rates and grain size dependencies in our cosmogenic 10Be analyses of modern and fill terrace sediments reveal an increased importance of landsliding compared to today on the west side during aggradation, but of similar importance during aggradation on the east side. Differences in the timing of aggradation and the 10Be data likely result from differences in valley geometry, which causes sediment to be temporarily stored in perched basins on the east side. It appears as if periods of increasing precipitation triggered landslides throughout the region, which induced aggradation in the west, but blockage of the narrow bedrock gorges downstream from the perched basins in the east. As such, basin geometry and fluvial connectivity appear to strongly influence the timing of sediment movement through the system. For larger basins that integrate subbasins with differing geometries or degrees of connectivity (like Humahuaca), sedimentary responses to climate forcing are likely attenuated.Fil: Schildgen, Taylor F. German Research Centre For Geosciences; Alemania. Universitat Potsdam; AlemaniaFil: Robinson, Ruth A. J.. University Of St Andrews; Reino UnidoFil: Savi, Sara. Universitat Potsdam; AlemaniaFil: Phillips, William M.. University Of Idaho; Estados UnidosFil: Spencer, Joel Q. G.. Kansas State University; Estados UnidosFil: Bookhagen, Bodo. Universitat Potsdam; AlemaniaFil: Scherler, Dirk. Freie Universitat Berlin; Alemania. German Research Centre For Geosciences; AlemaniaFil: Tofelde, Stefanie. Universitat Potsdam; AlemaniaFil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Kubik, Peter W.. Eidgenossische Technische Hochschule Zurich; SuizaFil: Binnie, Steven A.. Universitat Zu Köln; AlemaniaFil: Strecker, Manfred R.. Universitat Potsdam; AlemaniaAmerican Geophysical Union2016-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17504Schildgen, Taylor F; Robinson, Ruth A. J.; Savi, Sara; Phillips, William M.; Spencer, Joel Q. G.; et al.; Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity; American Geophysical Union; Journal of Geophysical Research F: Earth Surface; 121; 2; 2-2016; 392-4142169-9003enginfo:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1002/2015JF003607info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2015JF003607/abstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:42:55Zoai:ri.conicet.gov.ar:11336/17504instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:42:55.761CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
title Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
spellingShingle Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
Schildgen, Taylor F
BERYLIUM-10
FLUVIAL TERRACES
HUMAHUACA BASIN
LANDSCAPE CONNECTIVITY
OPTICALLY STIMULATED LUMINESCENCE
SOUTH AMERICAN MONSOON SYSTEM
title_short Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
title_full Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
title_fullStr Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
title_full_unstemmed Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
title_sort Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity
dc.creator.none.fl_str_mv Schildgen, Taylor F
Robinson, Ruth A. J.
Savi, Sara
Phillips, William M.
Spencer, Joel Q. G.
Bookhagen, Bodo
Scherler, Dirk
Tofelde, Stefanie
Alonso, Ricardo Narciso
Kubik, Peter W.
Binnie, Steven A.
Strecker, Manfred R.
author Schildgen, Taylor F
author_facet Schildgen, Taylor F
Robinson, Ruth A. J.
Savi, Sara
Phillips, William M.
Spencer, Joel Q. G.
Bookhagen, Bodo
Scherler, Dirk
Tofelde, Stefanie
Alonso, Ricardo Narciso
Kubik, Peter W.
Binnie, Steven A.
Strecker, Manfred R.
author_role author
author2 Robinson, Ruth A. J.
Savi, Sara
Phillips, William M.
Spencer, Joel Q. G.
Bookhagen, Bodo
Scherler, Dirk
Tofelde, Stefanie
Alonso, Ricardo Narciso
Kubik, Peter W.
Binnie, Steven A.
Strecker, Manfred R.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BERYLIUM-10
FLUVIAL TERRACES
HUMAHUACA BASIN
LANDSCAPE CONNECTIVITY
OPTICALLY STIMULATED LUMINESCENCE
SOUTH AMERICAN MONSOON SYSTEM
topic BERYLIUM-10
FLUVIAL TERRACES
HUMAHUACA BASIN
LANDSCAPE CONNECTIVITY
OPTICALLY STIMULATED LUMINESCENCE
SOUTH AMERICAN MONSOON SYSTEM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Fluvial fill terraces preserve sedimentary archives of landscape responses to climate change, typically over millennial timescales. In the Humahuaca Basin of NW Argentina (Eastern Cordillera, southern Central Andes), our 29 new optically stimulated luminescence ages of late Pleistocene fill terrace sediments demonstrate that the timing of past river aggradation occurred over different intervals on the western and eastern sides of the valley, despite their similar bedrock lithology, mean slopes, and precipitation. In the west, aggradation coincided with periods of increasing precipitation, while in the east, aggradation coincided with decreasing precipitation or more variable conditions. Erosion rates and grain size dependencies in our cosmogenic 10Be analyses of modern and fill terrace sediments reveal an increased importance of landsliding compared to today on the west side during aggradation, but of similar importance during aggradation on the east side. Differences in the timing of aggradation and the 10Be data likely result from differences in valley geometry, which causes sediment to be temporarily stored in perched basins on the east side. It appears as if periods of increasing precipitation triggered landslides throughout the region, which induced aggradation in the west, but blockage of the narrow bedrock gorges downstream from the perched basins in the east. As such, basin geometry and fluvial connectivity appear to strongly influence the timing of sediment movement through the system. For larger basins that integrate subbasins with differing geometries or degrees of connectivity (like Humahuaca), sedimentary responses to climate forcing are likely attenuated.
Fil: Schildgen, Taylor F. German Research Centre For Geosciences; Alemania. Universitat Potsdam; Alemania
Fil: Robinson, Ruth A. J.. University Of St Andrews; Reino Unido
Fil: Savi, Sara. Universitat Potsdam; Alemania
Fil: Phillips, William M.. University Of Idaho; Estados Unidos
Fil: Spencer, Joel Q. G.. Kansas State University; Estados Unidos
Fil: Bookhagen, Bodo. Universitat Potsdam; Alemania
Fil: Scherler, Dirk. Freie Universitat Berlin; Alemania. German Research Centre For Geosciences; Alemania
Fil: Tofelde, Stefanie. Universitat Potsdam; Alemania
Fil: Alonso, Ricardo Narciso. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Kubik, Peter W.. Eidgenossische Technische Hochschule Zurich; Suiza
Fil: Binnie, Steven A.. Universitat Zu Köln; Alemania
Fil: Strecker, Manfred R.. Universitat Potsdam; Alemania
description Fluvial fill terraces preserve sedimentary archives of landscape responses to climate change, typically over millennial timescales. In the Humahuaca Basin of NW Argentina (Eastern Cordillera, southern Central Andes), our 29 new optically stimulated luminescence ages of late Pleistocene fill terrace sediments demonstrate that the timing of past river aggradation occurred over different intervals on the western and eastern sides of the valley, despite their similar bedrock lithology, mean slopes, and precipitation. In the west, aggradation coincided with periods of increasing precipitation, while in the east, aggradation coincided with decreasing precipitation or more variable conditions. Erosion rates and grain size dependencies in our cosmogenic 10Be analyses of modern and fill terrace sediments reveal an increased importance of landsliding compared to today on the west side during aggradation, but of similar importance during aggradation on the east side. Differences in the timing of aggradation and the 10Be data likely result from differences in valley geometry, which causes sediment to be temporarily stored in perched basins on the east side. It appears as if periods of increasing precipitation triggered landslides throughout the region, which induced aggradation in the west, but blockage of the narrow bedrock gorges downstream from the perched basins in the east. As such, basin geometry and fluvial connectivity appear to strongly influence the timing of sediment movement through the system. For larger basins that integrate subbasins with differing geometries or degrees of connectivity (like Humahuaca), sedimentary responses to climate forcing are likely attenuated.
publishDate 2016
dc.date.none.fl_str_mv 2016-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/17504
Schildgen, Taylor F; Robinson, Ruth A. J.; Savi, Sara; Phillips, William M.; Spencer, Joel Q. G.; et al.; Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity; American Geophysical Union; Journal of Geophysical Research F: Earth Surface; 121; 2; 2-2016; 392-414
2169-9003
url http://hdl.handle.net/11336/17504
identifier_str_mv Schildgen, Taylor F; Robinson, Ruth A. J.; Savi, Sara; Phillips, William M.; Spencer, Joel Q. G.; et al.; Landscape response to late Pleistocene climate change in NW Argentina: Sediment flux modulated by basin geometry and connectivity; American Geophysical Union; Journal of Geophysical Research F: Earth Surface; 121; 2; 2-2016; 392-414
2169-9003
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1002/2015JF003607
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2015JF003607/abstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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