Artículo

Markgraf, V.; Bradbury, J.P.; Schwalb, A.; Burns, S.J.; Stern, C.; Ariztegui, D.; Gilli, A.; Anselmetti, F.S.; Stine, S.; Maidana, N. "Holocene palaeoclimates of southern Patagonia: Limnological and environmental history of Lago Cardiel, Argentina" (2003) Holocene. 13(4):581-591
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Abstract:

Multiproxy palaeoenvironmental and palaeolimnological analyses of two Holocene-age sediment cores from the margin of Lago Cardiel, a 76 m deep, closed-basin lake in southern Patagonia (latitude 49°S), provide information on lake-level changes that can be related to regional palaeoclimate scenarios. Sedimentologic (magnetic susceptibility, organic and inorganic carbon content) and environmental indicators (pollen, diatoms, ostracodes and stable isotopes on ostracodes) show lake levels markedly higher than today during the early Holocene, following a rapid lake-level rise after a desiccation phase prior to 11 000 BP. After about 6000 BP, lake levels were generally lower, but underwent repeated fluctuations. These inferred changes support the previously proposed view that the southern westerly stormtracks were focused (zonal) north of latitude 50°S during the early Holocene, allowing for Antarctic cold fronts to bring easterly moisture to southern Patagonia, whereas during the late Holocene the stormtracks shifted seasonally, with an overall more meridional behaviour, resulting in less and more variable moisture at these latitudes.

Registro:

Documento: Artículo
Título:Holocene palaeoclimates of southern Patagonia: Limnological and environmental history of Lago Cardiel, Argentina
Autor:Markgraf, V.; Bradbury, J.P.; Schwalb, A.; Burns, S.J.; Stern, C.; Ariztegui, D.; Gilli, A.; Anselmetti, F.S.; Stine, S.; Maidana, N.
Filiación:Inst. of Arctic and Alpine Research, University of Colorado, Boulder, CO 80309-0450, United States
5784 Horseradish Gulch, Golden, CO 80403, United States
Institut für Umwelt-Geochemie, Universität Heidelberg, Im Neuenheimer Feld 236, D-69120 Heidelberg, Germany
Department of Geosciences, University of Massachusetts, Amherst, MA 01003-5820, United States
Department of Geological Sciences, University of Colorado, Boulder, CO 80309-0399, United States
Geological Institute, Swiss Fed. Inst. of Technology ETHZ, Sonneggstrasse 5, CH-8092 Zürich, Switzerland
Dept. of Geogr./Environ. Studies, California State University, Hayward, CA 94542, United States
Departamento de Ciencias Biologicas, Laboratorio de Morfologia Vegetal, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina
Institut Forel, Dept. of Geology and Paleontology, University of Geneva, Rue des Maraichers 13, CH-1211 Geneva 4, Switzerland
Palabras clave:Argentina; Environmental history; Holocene; Lago Cardiel; Lake levels; Multiproxy approach; Palaeoclimates; Palaeolimnology; Patagonia; South America; Stormtracks; Holocene; lacustrine deposit; lake level; paleoclimate; paleolimnology; seasonal variation; storm track; Argentina; Bacillariophyta; Ostracoda
Año:2003
Volumen:13
Número:4
Página de inicio:581
Página de fin:591
DOI: http://dx.doi.org/10.1191/0959683603hl648rp
Título revista:Holocene
Título revista abreviado:Holocene
ISSN:09596836
CODEN:HOLOE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09596836_v13_n4_p581_Markgraf

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Citas:

---------- APA ----------
Markgraf, V., Bradbury, J.P., Schwalb, A., Burns, S.J., Stern, C., Ariztegui, D., Gilli, A.,..., Maidana, N. (2003) . Holocene palaeoclimates of southern Patagonia: Limnological and environmental history of Lago Cardiel, Argentina. Holocene, 13(4), 581-591.
http://dx.doi.org/10.1191/0959683603hl648rp
---------- CHICAGO ----------
Markgraf, V., Bradbury, J.P., Schwalb, A., Burns, S.J., Stern, C., Ariztegui, D., et al. "Holocene palaeoclimates of southern Patagonia: Limnological and environmental history of Lago Cardiel, Argentina" . Holocene 13, no. 4 (2003) : 581-591.
http://dx.doi.org/10.1191/0959683603hl648rp
---------- MLA ----------
Markgraf, V., Bradbury, J.P., Schwalb, A., Burns, S.J., Stern, C., Ariztegui, D., et al. "Holocene palaeoclimates of southern Patagonia: Limnological and environmental history of Lago Cardiel, Argentina" . Holocene, vol. 13, no. 4, 2003, pp. 581-591.
http://dx.doi.org/10.1191/0959683603hl648rp
---------- VANCOUVER ----------
Markgraf, V., Bradbury, J.P., Schwalb, A., Burns, S.J., Stern, C., Ariztegui, D., et al. Holocene palaeoclimates of southern Patagonia: Limnological and environmental history of Lago Cardiel, Argentina. Holocene. 2003;13(4):581-591.
http://dx.doi.org/10.1191/0959683603hl648rp