Artículo
Landform analysis of the Pueyrredón Lake area in northwestern Santa Cruz, Argentina
Fecha de publicación:
08/2013
Editorial:
Elsevier
Revista:
Quaternary International
ISSN:
1040-6182
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The aim of this research was to analyze the landforms around Pueyrredón Lake (NW Santa Cruz in Argentina) to contribute to the understanding of the paleoenvironmental evolution of Patagonia during the Late Pleistocene–Early Holocene. The Pueyrredón Lake area belongs to the Patagonian shield, northwest of the Santa Cruz Province (47°22′28″ S–71°55′34″ W). Characteristic landforms were identified through satellite images (Landsat 7 ETM) and field work. These landforms include glacial troughs, glacier striations and groove casts, three fan deltas on the south margin of Pueyrredón Lake, lacustrine and glacio-lacustrine sediment, and till deposits. In addition, short detailed stratigraphic logs were measured for paleoenvironmental analysis, and several sedimentary deposits were sampled to characterize grain size variations. All of the information is displayed on a geomorphological map. The modern and ancient landforms were also analyzed based on their topographic characteristics, which were determined by a digital elevation model (DEM). Geomorphological conditions of the erosional and depositional processes in the paleoglacial environment were analyzed using longitudinal- and cross-sections. The results shed light on the climatic variability during the most recent geological period. Major changes in the landscape morphology were associated with glacier evolution and the development and division of the great lakes in the eastern Andes, in Central Patagonia.
Palabras clave:
Geomorphology
,
Glacial Deposits
,
Landforms
,
Argentina
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Citación
Horta, Luis Rubén; Busnelli, Jose; Georgieff, Sergio Miguel; Aschero, Carlos Alberto; Landform analysis of the Pueyrredón Lake area in northwestern Santa Cruz, Argentina; Elsevier; Quaternary International; 317; 8-2013; 19-33
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