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Southern Patagonian Ice Field
The Southern Patagonian Ice Field (), located at the Southern Patagonic Andes between Chile and Argentina, is the world's second largest contiguous extrapolar ice field. It is the bigger of two remnant parts of the Patagonian Ice Sheet, which covered all of southern Chile during the last glacial period, locally called the Llanquihue glaciation. Geography The Southern Patagonian Ice Field extends from parallels 48° 15′ S to 51° 30′ S for approximately , and has an approximate area of , of which belong to Chile and belong to Argentina. The ice mass feeds dozens of glaciers in the area, among which are the Upsala (), Viedma () and Perito Moreno () in the Los Glaciares National Park in Argentina, and the Pío XI Glacier or Bruggen Glacier (, the largest in area and longest in the southern hemisphere outside of Antarctica), O'Higgins (), Grey () and Tyndall () in Chile. The glaciers going to the west flow into the fjords of the Patagonian chan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Field
An ice field (also spelled icefield) is a mass of interconnected valley glaciers (also called mountain glaciers or alpine glaciers) on a mountain mass with protruding rock ridges or summits. They are often found in the colder climates and higher altitudes of the world where there is sufficient precipitation for them to form. The higher peaks of the underlying mountain rock that protrude through the icefields are known as nunataks. Ice fields are larger than alpine glaciers, but smaller than ice caps and ice sheets. The topography of ice fields is determined by the shape of the surrounding landforms, while ice caps have their own forms overriding underlying shapes. Formation Ice fields are formed by a large accumulation of snow which, through years of compression and freezing, turns into ice. Because of the susceptibility of ice to gravity, ice fields usually form over large areas that are basins or atop plateaus, thus allowing a continuum of ice to form over the landscape unint ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lautaro Volcano
Lautaro is an active subglacial stratovolcano located in Chilean Patagonia, in the northern part of the Southern Patagonian Ice Field. Its summit rises roughly above the average surface of the ice cap plateau. Geography and geomorphology Lautaro is located within the Southern Patagonian Ice Field, and is the highest summit in its area. Bad weather and remote location make the volcano difficult to access. The existence of a volcano at Lautaro was recognized in 1879, but it was identified as Lautaro only in 1961. The volcano was named in 1952; it was originally named "volcán de Los Gigantes" and sometimes confused with the neighbouring non-volcano Cerro FitzRoy. The volcano is a composite volcano and a stratovolcano covered with glaciers. Its elevation is variously given as , or . It rises about above the surrounding ice, and bears traces of glacial erosion. The edifice covers an area of about and about 90% of it is covered with ice. It has a parasitic vent on the wester ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
