IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
capítulos de libros
Título:
Glacial Ice as Cryogenic Factor in the Periglaciation Zone of the Composed Rockglacier Morenas Coloradas, Central Andes of Mendoza, Argentina
Autor/es:
DARIO TROMBOTTO LIAUDAT; LUCÍA ARENA; GIORGIO CARANTI
Libro:
Ninth International Conference on Permafrost
Editorial:
Edited by Douglas L. Kane and Kenneth M. Hinkel, Institute of Northern Engineering, University of Alaska
Referencias:
Lugar: Fairbanks, Alaska, USA; Año: 2008; p. 1781 - 1786
Resumen:
The present work focusses on the analyses of glacial ice from thermokarst in relict glacial and degraded Andean permafrost environments (4200 m ASL) in order to reconstruct its environmental or paleoenvironmental history and to understand the processes that generated the Andean rockglaciers. The study area belongs to the Morenas Coloradas rockglacier, situated in the Cordón del Plata (at 33° S approximately), Central Andes, Mendoza, Argentina. An interpretation of the ice samples and an analysis of their internal and crystallographic characteristics, is carried out in order to explain the geomorphological and cryogenic history of the landforms . The area of periglaciation -where cryogenic forms are generated- is studied thoroughly. Due to climatic oscillations these periglacial areas may be identified by thermokarst. The degradation phenomenon helps to build new cryogenic forms like rockglaciers. Different possible environmental scenarios for the genesis of protoperiglacial landforms may be imagined. 
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