New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene

Autores
Torre, Gabriela; Gaiero, Diego M.; Cosentino, Nicolás Juan; Coppo, Renata; Oliveira-Sawakuchi, André
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gaiero, Diego M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Gaiero, Diego M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Cosentino, Nicolás Juan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Cosentino, Nicolás Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Coppo, Renata. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Oliveira-Sawakuchi, André. Instituto de Geociencias, Universidad de San Pablo; Brasil.
High-resolution studies of paleo-records located closer to the dust source areas of South America are relevant for increasing the knowledge on past climatic conditions in the Southern Hemisphere. In this sense, the Pampean loess archives can offer explicit records of dust source/transport/deposition in the region, providing new insights which may be used to better understand the role of dust in future climate change scenarios. In this work, we study a loess sequence (Lozada site; ~31°39´S; 64°08´W) located at the foothill of the Eastern Pampean Range which represents the westernmost loess deposits within the so-called ?loess belt?. The studied sequence covers a span of time from the Late Deglaciation period up to the Early-Holocene. Loess samples from this record show two grain-size populations suggesting more than one dust source area. The dominance of a coarse silt subpopulation during the transition from MIS 2 to the Early-Holocene suggests that proximal dust sources were dominant at that time. Two of the most proximal dust sources were analyzed as the probable contributors to the Lozada site: sediments derived from the Eastern Pampean Ranges and sediments derived from the shorelines of the Mar Chiquita Lake. The geochemical data suggest that both areas were not significant dust sources to the eastern Pampean Plain during the studied interval. Instead, our chemical data suggest a dominant supply from a southern and relatively closer area, linked to the foothill of the Andes, and the increased activation during the Early Holocene of a more distant area contributing finer loess associated to a northern source located in the Puna region.
publishedVersion
Fil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gaiero, Diego M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Gaiero, Diego M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Cosentino, Nicolás Juan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Cosentino, Nicolás Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Coppo, Renata. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Oliveira-Sawakuchi, André. Instituto de Geociencias, Universidad de San Pablo; Brasil.
Geociencias multidisciplinaria
Materia
Grain-size
Pampas
Provenance
REE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/562108
Acceder
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network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early HoloceneTorre, GabrielaGaiero, Diego M.Cosentino, Nicolás JuanCoppo, RenataOliveira-Sawakuchi, AndréGrain-sizePampasProvenanceREEFil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Gaiero, Diego M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Gaiero, Diego M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Cosentino, Nicolás Juan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Cosentino, Nicolás Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Coppo, Renata. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Oliveira-Sawakuchi, André. Instituto de Geociencias, Universidad de San Pablo; Brasil.High-resolution studies of paleo-records located closer to the dust source areas of South America are relevant for increasing the knowledge on past climatic conditions in the Southern Hemisphere. In this sense, the Pampean loess archives can offer explicit records of dust source/transport/deposition in the region, providing new insights which may be used to better understand the role of dust in future climate change scenarios. In this work, we study a loess sequence (Lozada site; ~31°39´S; 64°08´W) located at the foothill of the Eastern Pampean Range which represents the westernmost loess deposits within the so-called ?loess belt?. The studied sequence covers a span of time from the Late Deglaciation period up to the Early-Holocene. Loess samples from this record show two grain-size populations suggesting more than one dust source area. The dominance of a coarse silt subpopulation during the transition from MIS 2 to the Early-Holocene suggests that proximal dust sources were dominant at that time. Two of the most proximal dust sources were analyzed as the probable contributors to the Lozada site: sediments derived from the Eastern Pampean Ranges and sediments derived from the shorelines of the Mar Chiquita Lake. The geochemical data suggest that both areas were not significant dust sources to the eastern Pampean Plain during the studied interval. Instead, our chemical data suggest a dominant supply from a southern and relatively closer area, linked to the foothill of the Andes, and the increased activation during the Early Holocene of a more distant area contributing finer loess associated to a northern source located in the Puna region.publishedVersionFil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Gaiero, Diego M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Gaiero, Diego M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Cosentino, Nicolás Juan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Cosentino, Nicolás Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Coppo, Renata. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Oliveira-Sawakuchi, André. Instituto de Geociencias, Universidad de San Pablo; Brasil.Geociencias multidisciplinaria2019info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf0959-6836http://hdl.handle.net/11086/562108enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2026-10-01T10:13:58Zoai:rdu.unc.edu.ar:11086/562108Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722026-10-01 10:34:21.41Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobatrue
dc.title.none.fl_str_mv New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
title New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
spellingShingle New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
Torre, Gabriela
Grain-size
Pampas
Provenance
REE
title_short New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
title_full New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
title_fullStr New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
title_full_unstemmed New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
title_sort New insights on sources contributing dust to the loess record of the western edge of the Pampean Plain during the transition from the late MIS 2 to the early Holocene
dc.creator.none.fl_str_mv Torre, Gabriela
Gaiero, Diego M.
Cosentino, Nicolás Juan
Coppo, Renata
Oliveira-Sawakuchi, André
author Torre, Gabriela
author_facet Torre, Gabriela
Gaiero, Diego M.
Cosentino, Nicolás Juan
Coppo, Renata
Oliveira-Sawakuchi, André
author_role author
author2 Gaiero, Diego M.
Cosentino, Nicolás Juan
Coppo, Renata
Oliveira-Sawakuchi, André
author2_role author
author
author
author
dc.subject.none.fl_str_mv Grain-size
Pampas
Provenance
REE
topic Grain-size
Pampas
Provenance
REE
dc.description.none.fl_txt_mv Fil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gaiero, Diego M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Gaiero, Diego M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Cosentino, Nicolás Juan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Cosentino, Nicolás Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Coppo, Renata. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Oliveira-Sawakuchi, André. Instituto de Geociencias, Universidad de San Pablo; Brasil.
High-resolution studies of paleo-records located closer to the dust source areas of South America are relevant for increasing the knowledge on past climatic conditions in the Southern Hemisphere. In this sense, the Pampean loess archives can offer explicit records of dust source/transport/deposition in the region, providing new insights which may be used to better understand the role of dust in future climate change scenarios. In this work, we study a loess sequence (Lozada site; ~31°39´S; 64°08´W) located at the foothill of the Eastern Pampean Range which represents the westernmost loess deposits within the so-called ?loess belt?. The studied sequence covers a span of time from the Late Deglaciation period up to the Early-Holocene. Loess samples from this record show two grain-size populations suggesting more than one dust source area. The dominance of a coarse silt subpopulation during the transition from MIS 2 to the Early-Holocene suggests that proximal dust sources were dominant at that time. Two of the most proximal dust sources were analyzed as the probable contributors to the Lozada site: sediments derived from the Eastern Pampean Ranges and sediments derived from the shorelines of the Mar Chiquita Lake. The geochemical data suggest that both areas were not significant dust sources to the eastern Pampean Plain during the studied interval. Instead, our chemical data suggest a dominant supply from a southern and relatively closer area, linked to the foothill of the Andes, and the increased activation during the Early Holocene of a more distant area contributing finer loess associated to a northern source located in the Puna region.
publishedVersion
Fil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gaiero, Diego M. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Gaiero, Diego M. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Cosentino, Nicolás Juan. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Cosentino, Nicolás Juan. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Coppo, Renata. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Oliveira-Sawakuchi, André. Instituto de Geociencias, Universidad de San Pablo; Brasil.
Geociencias multidisciplinaria
description Fil: Torre, Gabriela. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales; Argentina.
publishDate 2019
dc.date.none.fl_str_mv 2019
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 0959-6836
http://hdl.handle.net/11086/562108
identifier_str_mv 0959-6836
url http://hdl.handle.net/11086/562108
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
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reponame_str Repositorio Digital Universitario (UNC)
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instname_str Universidad Nacional de Córdoba
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repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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