Field of penitentes on the upper Río Blanco, Central Andes of Argentina
Highest point
Peak
Aconcagua
Elevation
6,961 m (22,838 ft)
Dimensions
Length
1,200 km (750 mi)
Geography
Country
Chile, Northwest Argentina, Bolivia
Parent range
Andes
Map of the climatic regions of the Andes. The Dry Andes are shown in yellow. The Tropical Andes are shown in green and the Wet Andes in dark blue.
The Dry Andes (Spanish: Andes áridos) is a climatic and glaciological subregion of the Andes. Together with the Wet Andes it is one of the two subregions of the Argentine and Chilean Andes. The Dry Andes runs from the Atacama Desert in northern Chile and Northwest Argentina south to a latitude of 35°S in Chile. In Argentina the Dry Andes reaches 40°S due to the leeward effect of the Andes. According to Luis Lliboutry
the Dry Andes can be defined by the distribution of penitentes.[1] The southernmost well-developed penitentes are found on Lanín Volcano.
Rock glaciers occur in parts of the Dry Andes, but are lacking in the more southern Wet Andes.[2] In the Dry Andes, ordinary glaciers develop usually at higher altitudes than rock glaciers.[2] Around Aconcagua rock glaciers reach altitudes as a low as 900 m a.s.l.[2]
The Principal Cordillera near Santiago may have been subject to significant glaciation as early as 1 million years ago, as indicated by the development of glacial valleys.[3]
^"Glaciers of the Dry Andes". Louis Lliboutry, USGS. Retrieved 2008-12-21.
^Charrier, Reynaldo; Iturrizaga, Lafasam; Charretier, Sebastién; Regard, Vincent (2019). "Geomorphologic and Glacial Evolution of the Cachapoal and southern Maipo catchments in the Andean Principal Cordillera, Central Chile (34°-35º S)". Andean Geology. 46 (2): 240–278. doi:10.5027/andgeoV46n2-3108. Retrieved June 9, 2019.
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