A review of Late Quaternary inland dune systems of South America east of the Andes

Autores
Tripaldi, Alfonsina; Zárate, Marcelo Arístides
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Inland dune systems of South America occur in a variety of environmental settings under different climatic conditions, from humid–subhumid to semiarid–arid. This contribution provides the state of the art on dune research of inland systems east of the Andes. Tropical northern (∼10°N–∼10°S), including the dune fields of Llanos del Orinoco and the Amazonian basin, are mainly formed from parabolic, blowout (or deflation basins) and linear dunes, developed on river floodplains. Aeolian activity was reported to occur near the late Pleistocene–Holocene boundary in Llanos del Orinoco, over the last ∼17 ka in the Branco river basin and ∼32.6 ka in the Negro river basin, both in the Amazonian region. In general, the attributed aeolian origin is controversial, the morphology difficult to determine, and the chronology still extremely limited and rather debatable in some cases. The southern tropical region (∼10°S–∼22°S) includes aeolian systems situated across the extensive lowlands of the Gran Chaco and those located in fluvial basins related to the cratonic Brazilian shield (São Francisco River, Pantanal and Mato Grosso). The oldest barchanoid–barchan ridges at the Gran Chaco were dated ∼36–33 ka and subsequent aeolian sand accumulation occurred at ∼18 ka, ∼14–12 ka, ∼10–9 ka and mid to late Holocene times. Parabolic dunes at the São Francisco River floodplain show an oldest episode generated between ∼28 and ∼11 ka, followed by eolian activity during the early to mid-Holocene. No chronological data is available for the linear and lunette dunes described at the Pantanal. Linear ridges were distinguished in the upper Paraná River (Mato Grosso) with associated sand accumulation at different intervals of the Holocene. The last reviewed region is the Andean Piedmont and western Pampas, at subtropical eastern South America, comprising a large variety of dune morphologies (barchan–barchanoid, linear, parabolic, transverse and lunette dunes, deflation basins, and sand sheets). Luminescence ages suggest the occurrence of aeolian activity intervals during late glacial times and the Holocene. The general understanding on the dynamic of South American dune systems is hampered by the paucity of chronological information and the representativeness of some dune records. Whether they reflect local or regional environmental conditions is still a matter of discussion in several areas that need further studies.
Fil: Tripaldi, Alfonsina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de la Pampa. Universidad Nacional de la Pampa. Facultad de Cs.exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de la Pampa; Argentina
Materia
Dune Fields
Dune Morphology
Aeolian Chronology
South America
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/18533

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spelling A review of Late Quaternary inland dune systems of South America east of the AndesTripaldi, AlfonsinaZárate, Marcelo ArístidesDune FieldsDune MorphologyAeolian ChronologySouth Americahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Inland dune systems of South America occur in a variety of environmental settings under different climatic conditions, from humid–subhumid to semiarid–arid. This contribution provides the state of the art on dune research of inland systems east of the Andes. Tropical northern (∼10°N–∼10°S), including the dune fields of Llanos del Orinoco and the Amazonian basin, are mainly formed from parabolic, blowout (or deflation basins) and linear dunes, developed on river floodplains. Aeolian activity was reported to occur near the late Pleistocene–Holocene boundary in Llanos del Orinoco, over the last ∼17 ka in the Branco river basin and ∼32.6 ka in the Negro river basin, both in the Amazonian region. In general, the attributed aeolian origin is controversial, the morphology difficult to determine, and the chronology still extremely limited and rather debatable in some cases. The southern tropical region (∼10°S–∼22°S) includes aeolian systems situated across the extensive lowlands of the Gran Chaco and those located in fluvial basins related to the cratonic Brazilian shield (São Francisco River, Pantanal and Mato Grosso). The oldest barchanoid–barchan ridges at the Gran Chaco were dated ∼36–33 ka and subsequent aeolian sand accumulation occurred at ∼18 ka, ∼14–12 ka, ∼10–9 ka and mid to late Holocene times. Parabolic dunes at the São Francisco River floodplain show an oldest episode generated between ∼28 and ∼11 ka, followed by eolian activity during the early to mid-Holocene. No chronological data is available for the linear and lunette dunes described at the Pantanal. Linear ridges were distinguished in the upper Paraná River (Mato Grosso) with associated sand accumulation at different intervals of the Holocene. The last reviewed region is the Andean Piedmont and western Pampas, at subtropical eastern South America, comprising a large variety of dune morphologies (barchan–barchanoid, linear, parabolic, transverse and lunette dunes, deflation basins, and sand sheets). Luminescence ages suggest the occurrence of aeolian activity intervals during late glacial times and the Holocene. The general understanding on the dynamic of South American dune systems is hampered by the paucity of chronological information and the representativeness of some dune records. Whether they reflect local or regional environmental conditions is still a matter of discussion in several areas that need further studies.Fil: Tripaldi, Alfonsina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; ArgentinaFil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de la Pampa. Universidad Nacional de la Pampa. Facultad de Cs.exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de la Pampa; ArgentinaElsevier2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/18533Tripaldi, Alfonsina; Zárate, Marcelo Arístides; A review of Late Quaternary inland dune systems of South America east of the Andes; Elsevier; Quaternary International; 410; Part B; 7-2014; 96-1101040-6182CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2014.06.069info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1040618214004522info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:05Zoai:ri.conicet.gov.ar:11336/18533instacron: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 10:09:06.088CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A review of Late Quaternary inland dune systems of South America east of the Andes
title A review of Late Quaternary inland dune systems of South America east of the Andes
spellingShingle A review of Late Quaternary inland dune systems of South America east of the Andes
Tripaldi, Alfonsina
Dune Fields
Dune Morphology
Aeolian Chronology
South America
title_short A review of Late Quaternary inland dune systems of South America east of the Andes
title_full A review of Late Quaternary inland dune systems of South America east of the Andes
title_fullStr A review of Late Quaternary inland dune systems of South America east of the Andes
title_full_unstemmed A review of Late Quaternary inland dune systems of South America east of the Andes
title_sort A review of Late Quaternary inland dune systems of South America east of the Andes
dc.creator.none.fl_str_mv Tripaldi, Alfonsina
Zárate, Marcelo Arístides
author Tripaldi, Alfonsina
author_facet Tripaldi, Alfonsina
Zárate, Marcelo Arístides
author_role author
author2 Zárate, Marcelo Arístides
author2_role author
dc.subject.none.fl_str_mv Dune Fields
Dune Morphology
Aeolian Chronology
South America
topic Dune Fields
Dune Morphology
Aeolian Chronology
South America
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Inland dune systems of South America occur in a variety of environmental settings under different climatic conditions, from humid–subhumid to semiarid–arid. This contribution provides the state of the art on dune research of inland systems east of the Andes. Tropical northern (∼10°N–∼10°S), including the dune fields of Llanos del Orinoco and the Amazonian basin, are mainly formed from parabolic, blowout (or deflation basins) and linear dunes, developed on river floodplains. Aeolian activity was reported to occur near the late Pleistocene–Holocene boundary in Llanos del Orinoco, over the last ∼17 ka in the Branco river basin and ∼32.6 ka in the Negro river basin, both in the Amazonian region. In general, the attributed aeolian origin is controversial, the morphology difficult to determine, and the chronology still extremely limited and rather debatable in some cases. The southern tropical region (∼10°S–∼22°S) includes aeolian systems situated across the extensive lowlands of the Gran Chaco and those located in fluvial basins related to the cratonic Brazilian shield (São Francisco River, Pantanal and Mato Grosso). The oldest barchanoid–barchan ridges at the Gran Chaco were dated ∼36–33 ka and subsequent aeolian sand accumulation occurred at ∼18 ka, ∼14–12 ka, ∼10–9 ka and mid to late Holocene times. Parabolic dunes at the São Francisco River floodplain show an oldest episode generated between ∼28 and ∼11 ka, followed by eolian activity during the early to mid-Holocene. No chronological data is available for the linear and lunette dunes described at the Pantanal. Linear ridges were distinguished in the upper Paraná River (Mato Grosso) with associated sand accumulation at different intervals of the Holocene. The last reviewed region is the Andean Piedmont and western Pampas, at subtropical eastern South America, comprising a large variety of dune morphologies (barchan–barchanoid, linear, parabolic, transverse and lunette dunes, deflation basins, and sand sheets). Luminescence ages suggest the occurrence of aeolian activity intervals during late glacial times and the Holocene. The general understanding on the dynamic of South American dune systems is hampered by the paucity of chronological information and the representativeness of some dune records. Whether they reflect local or regional environmental conditions is still a matter of discussion in several areas that need further studies.
Fil: Tripaldi, Alfonsina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Geociencias Basicas, Aplicadas y Ambientales de Buenos Aires; Argentina
Fil: Zárate, Marcelo Arístides. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de la Pampa. Universidad Nacional de la Pampa. Facultad de Cs.exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de la Pampa; Argentina
description Inland dune systems of South America occur in a variety of environmental settings under different climatic conditions, from humid–subhumid to semiarid–arid. This contribution provides the state of the art on dune research of inland systems east of the Andes. Tropical northern (∼10°N–∼10°S), including the dune fields of Llanos del Orinoco and the Amazonian basin, are mainly formed from parabolic, blowout (or deflation basins) and linear dunes, developed on river floodplains. Aeolian activity was reported to occur near the late Pleistocene–Holocene boundary in Llanos del Orinoco, over the last ∼17 ka in the Branco river basin and ∼32.6 ka in the Negro river basin, both in the Amazonian region. In general, the attributed aeolian origin is controversial, the morphology difficult to determine, and the chronology still extremely limited and rather debatable in some cases. The southern tropical region (∼10°S–∼22°S) includes aeolian systems situated across the extensive lowlands of the Gran Chaco and those located in fluvial basins related to the cratonic Brazilian shield (São Francisco River, Pantanal and Mato Grosso). The oldest barchanoid–barchan ridges at the Gran Chaco were dated ∼36–33 ka and subsequent aeolian sand accumulation occurred at ∼18 ka, ∼14–12 ka, ∼10–9 ka and mid to late Holocene times. Parabolic dunes at the São Francisco River floodplain show an oldest episode generated between ∼28 and ∼11 ka, followed by eolian activity during the early to mid-Holocene. No chronological data is available for the linear and lunette dunes described at the Pantanal. Linear ridges were distinguished in the upper Paraná River (Mato Grosso) with associated sand accumulation at different intervals of the Holocene. The last reviewed region is the Andean Piedmont and western Pampas, at subtropical eastern South America, comprising a large variety of dune morphologies (barchan–barchanoid, linear, parabolic, transverse and lunette dunes, deflation basins, and sand sheets). Luminescence ages suggest the occurrence of aeolian activity intervals during late glacial times and the Holocene. The general understanding on the dynamic of South American dune systems is hampered by the paucity of chronological information and the representativeness of some dune records. Whether they reflect local or regional environmental conditions is still a matter of discussion in several areas that need further studies.
publishDate 2014
dc.date.none.fl_str_mv 2014-07
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/11336/18533
Tripaldi, Alfonsina; Zárate, Marcelo Arístides; A review of Late Quaternary inland dune systems of South America east of the Andes; Elsevier; Quaternary International; 410; Part B; 7-2014; 96-110
1040-6182
CONICET Digital
CONICET
url http://hdl.handle.net/11336/18533
identifier_str_mv Tripaldi, Alfonsina; Zárate, Marcelo Arístides; A review of Late Quaternary inland dune systems of South America east of the Andes; Elsevier; Quaternary International; 410; Part B; 7-2014; 96-110
1040-6182
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2014.06.069
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1040618214004522
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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reponame_str CONICET Digital (CONICET)
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instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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