Cryogenic landforms in the Sierras de Alvear, Fuegian Andes, subantarctic Argentina

Cryogenic landforms in the Sierras de Alvear, Fuegian Andes, subantarctic Argentina

A preliminary survey of periglacial landforms found in the Monte Alvear region of the Fuegian Andes, subantarctic Argentina has revealed the presence of nivation hollows, subnival boulder (clast) pavements, protalus ramparts, debris lobes, patterned ground and cryo-ejected clasts. With the exception...

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Bibliographic Details
Published in:Permafrost and periglacial processes Vol. 17; no. 4; pp. 371 - 376
Main Authors: Valcarcel-Diaz, Marcos, Carrera-Gomez, Pedro, Coronato, Andrea, Castillo-Rodriguez, Francisco, Rabassa, Jorge, Perez-Alberti, Augusto
Format: Journal Article
Language:English
Published: 01-12-2006
Subjects:
Argentina
South America, Andes Mts
Online Access:Get full text
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Summary:A preliminary survey of periglacial landforms found in the Monte Alvear region of the Fuegian Andes, subantarctic Argentina has revealed the presence of nivation hollows, subnival boulder (clast) pavements, protalus ramparts, debris lobes, patterned ground and cryo-ejected clasts. With the exception of debris lobes and cryo-ejected clasts, all the landforms show some degree of activity and are, therefore, considered as indicators of present-day cryonival morphodynamics at higher elevations in these mountains. A number of small tors, while not necessarily periglacial in origin, are also apparently experiencing cryogenic weathering.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1045-6740
DOI:10.1002/ppp.570