Mapping and permafrost altitudes in a periglacial environment : the Laguna del Diamante Reserve (Central Andes, Argentina)

Auteur(s) et Affiliation(s)



Description :
A geomorphological map, made on an ASTER image from aerial photographs and corroborated by fieldwork, reflects how the Laguna del Diamante Reserve in the Province of Mendoza, although previously glaciated, is at present an outstanding periglacial environment with a few residual glaciers. Periglacial landforms, occurrence of ice found during fieldwork, and rockglaciers were used to make a first approach to determine permafrost altitude. Historic registers from 1951-1952 indicated a height below 3,850 m a.s.l. as lower permafrost limit. Palaeo permafrost was identified at 3,400-3,500 m a.s.l. approximately on the foot of the southern slope of the Maipo Volcano. At present, the zone, still in a paraglacial state, is characterized by intense cryodynamics and it is considered adequate to be proposed as type region.


Type de document :
Article de périodique

Source :
Zeitschrift für Geomorphologie, issn : 0372-8854, 2013, vol. 57, n°. 2, p. 171-186, nombre de pages : 16, Références bibliographiques : 12 ref.

Date :
2013

Editeur :
Pays édition : Allemagne, Stuttgart, Gebruder Borntraeger