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dc.contributor.author
Horta, Luis Rubén
dc.contributor.author
Georgieff, Sergio Miguel
dc.contributor.author
Aschero, Carlos Alberto
dc.contributor.author
Goñi, Rafael Agustín
dc.date.available
2018-11-09T21:58:43Z
dc.date.issued
2017-04
dc.identifier.citation
Horta, Luis Rubén; Georgieff, Sergio Miguel; Aschero, Carlos Alberto; Goñi, Rafael Agustín; Paleolacustrine records from Late Pleistocene – Holocene in the Perito Moreno National Park, Argentinian Patagonian Andes; Pergamon-Elsevier Science Ltd; Quaternary International; 436; Part A; 4-2017; 8-15
dc.identifier.issn
1040-6182
dc.identifier.uri
http://hdl.handle.net/11336/64174
dc.description.abstract
The reconstruction of glacial paleolake formation and evolution allows the understanding of glacier advance and retreat behavior for longer periods of time. New datings obtained from paleolacustrine deposits in the Argentinian Patagonian Andes (Northwestern region of Santa Cruz Province) reveal that glacial lakes formed before the Last Glacial Maximum, they being as old as 31,278 cal yr BP, and evolved until 6900 cal yr BP. The interpretation of stratigraphic profiles described in different sectors of the Perito Moreno National Park (PMNP) allows reconstructing lacustrine, glaciolacustrine, glacial till and delta paleoenvironments. In each sector, organic-rich sediments were also sampled to obtain four absolute ages through AMS methodology. Thus, the paleogeographic reconstructions proposed are based on paleobathymetries performed from digital elevation models, datings and facies distribution of lacustrine deposits (mainly composed of laminated silts with subordinated sands and muds). Based on these new data, the paleogeography of this area is characterized by two lakes at 880 m.a.s.l at 31,200 ca yr BP, one directly related to modern Belgrano lake, while the other is probably related to the Burmeister lake but more than 10 km toward the East as respect to its current position. The paleogeography reconstruction shows, between 11,731 cal yr BP and 10,819 cal yr BP, the existence of a major paleolake at 900–920 m.a.s.l. which was connected to several modern lakes. Finally, a decrease of the paleolake level between 900 and 890 m.a.s.l. was recorded at 6900 cal yr BP which produced two major lacustrine systems separated by moraine deposits.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
HOLOCENE
dc.subject
LATE PLEISTOCENE
dc.subject
PALEOGEOGRAPHIC RECONSTRUCTIONS
dc.subject
PALEOLACUSTRINE RECORD
dc.subject
PATAGONIA LAKES
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Paleolacustrine records from Late Pleistocene – Holocene in the Perito Moreno National Park, Argentinian Patagonian Andes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-23T18:15:34Z
dc.journal.volume
436
dc.journal.number
Part A
dc.journal.pagination
8-15
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Horta, Luis Rubén. Universidad Nacional de La Rioja; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Estudios Sociales. Universidad Nacional de Tucumán. Instituto Superior de Estudios Sociales; Argentina
dc.description.fil
Fil: Georgieff, Sergio Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
dc.description.fil
Fil: Aschero, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Estudios Sociales. Universidad Nacional de Tucumán. Instituto Superior de Estudios Sociales; Argentina
dc.description.fil
Fil: Goñi, Rafael Agustín. Universidad de Buenos Aires; Argentina. Secretaría de Cultura de la Nación. Dirección Nacional de Cultura y Museos. Instituto Nacional de Antropología y Pensamiento Latinoamericano; Argentina
dc.journal.title
Quaternary International
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1040618216312514
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.quaint.2017.01.001
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