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dc.contributor.author
Torre, Gabriela  
dc.contributor.author
Gaiero, Diego Marcelo  
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Oliveira Sawakuchi, André  
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del Río, Ian  
dc.contributor.author
Coppo, Renata  
dc.date.available
2020-12-21T13:55:01Z  
dc.date.issued
2019-06  
dc.identifier.citation
Torre, Gabriela; Gaiero, Diego Marcelo; Oliveira Sawakuchi, André; del Río, Ian; Coppo, Renata; Revisiting the chronology and environmental conditions for the accretion of late Pleistocene-early Holocene Pampean loess (Argentina); Pergamon-Elsevier Science Ltd; Quaternary Science Reviews; 213; 6-2019; 105-119  
dc.identifier.issn
0277-3791  
dc.identifier.uri
http://hdl.handle.net/11336/120917  
dc.description.abstract
The present research work reviews the age models of three previously studied loess sections across 700 km in the loess belt of the Pampean region in central Argentina. The loess sections were investigated for the first time through high-resolution luminescence dating in order to determine the chronology of the loess deposits and its temporal correlation with important palaeoclimatic records of the Southern Hemisphere. Reliable estimations of mass accumulation rates (MARs) for loess were used to infer the temporal dust flux variation during the last glacial/interglacial transition in southern South America. The new age models have significant differences compared to the previously published ones of likely Last Glacial Maximum (LGM) ages. The three studied sections showed general bimodal grain-size distributions consistent with multiple sources contributing dust to the Pampas. It is observed that higher MARs values are associated with an increased presence of finer loess. Increases in loess accumulation are coeval with climatic transitions from wetter to drier periods in the Puna-Altiplano Plateau, and high MARs are related to synchronous climatic shifts to humid conditions in the Pampean plain. Contrasting with dust fluxes observed in the more distal palaeoarchives (i.e., the South Atlantic Ocean and the Antarctic ice sheet) the new data suggest increased dust accumulation in the Pampas during the Antarctic Cold Reversal (ACR) and the Holocene. This supports the idea that changes related to atmospheric transport efficiency can better explain dust flux variations observed over glacial/interglacial periods in distant palaeoarchives.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Pergamon-Elsevier Science Ltd  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
LOESS  
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MASS ACCUMULATION RATE (MAR)  
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OPTICALLY STIMULATED LUMINESCENCE DATING (OSL)  
dc.subject
PALAEOCLIMATOLOGY  
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PAMPAS  
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QUATERNARY  
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SOUTH AMERICA  
dc.subject.classification
Geociencias multidisciplinaria  
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Ciencias de la Tierra y relacionadas con el Medio Ambiente  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Revisiting the chronology and environmental conditions for the accretion of late Pleistocene-early Holocene Pampean loess (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
2020-11-25T16:08:49Z  
dc.journal.volume
213  
dc.journal.pagination
105-119  
dc.journal.pais
Estados Unidos  
dc.description.fil
Fil: Torre, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina  
dc.description.fil
Fil: Gaiero, Diego Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina  
dc.description.fil
Fil: Oliveira Sawakuchi, André. Universidade de Sao Paulo; Brasil  
dc.description.fil
Fil: del Río, Ian. Universidad Católica del Norte; Chile  
dc.description.fil
Fil: Coppo, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; Argentina  
dc.journal.title
Quaternary Science Reviews  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.quascirev.2019.04.018  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0277379118310291?via%3Dihub