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

Abstract 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 th...

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Bibliographic Details
Published in:Permafrost and Periglacial Processes
Main Authors: Valcárcel‐Díaz, Marcos, Carrera‐Gómez, Pedro, Coronato, Andrea, Castillo‐Rodríguez, Francisco, Rabassa, Jorge, Pérez‐Alberti, Augusto
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2006
Subjects:
Alvear
Argentina
Permafrost and Periglacial Processes
Online Access:http://dx.doi.org/10.1002/ppp.564
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.564
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.564
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Summary:Abstract 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. Copyright © 2006 John Wiley & Sons, Ltd.

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