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Tronador

earth science Maturity 7-9 Next article →

Tronador is a massive extinct stratovolcano in the southern Andes.

Tronador
Tronador

It sits on the border between Argentina and Chile. The mountain is located near the Argentine city of Bariloche. It is part of the Wet Andes, a region with very high precipitation. This area receives a lot of rain and snow. Most of this moisture comes from western frontal systems in the Pacific. Because of this humid temperate climate, many glaciers have formed here. The mountain is a popular destination for mountaineers today.

The volcano's history is tied to the Pleistocene epoch.

During this time, the mountain grew through various glacial and interglacial periods. However, it became practically extinct in the late Middle Pleistocene. This happened approximately 300,000 years ago. The cause was a shift in the active front of the Southern Volcanic Zone. This is the volcanic area where the mountain belongs. Since then, the volcano has not produced new lava or tephra. Instead, erosive processes like wind and ice have shaped its form.

The landscape around Tronador is quite unique. It features fjords, glacial lakes, and U-shaped valleys. These shapes were created during the Quaternary glaciations. During those times, the entire area was covered by the Patagonian Ice Sheet. The mountain is also part of an alpine landscape. It stands more than 1,000 meters above the nearby mountains in the Andean massif. Locals named the mountain "Tronador," which means "Thunderer" in Spanish. They chose this name because of the loud sounds made by falling seracs. Seracs are large blocks of glacial ice.

There are eight distinct glaciers located on the flanks of Tronador.

Ventisquero Negro Stevage
Ventisquero Negro Stevage

These are the Alerce, Ventisquero Negro, Casa Pangue, Castaño Overa, Río Blanco, Frías, Peulla, and Manso glaciers. The Ventisquero Negro is particularly unusual. Its name means "black snowdrift" in Spanish. It has a dark brown color because of dirt and sediment. This material is picked up in the glacier's accumulation zone. That zone is fed by the Río Manso Glacier from much higher up. Eventually, brown icebergs calve from the glacier and float in a small lake.

Other glaciers are also changing due to the environment. The Casa Pangue glacier is on the northwestern side of the mountain. Between 1961 and 1998, this glacier experienced significant thinning. Its rate of retreat increased between 1981 and 1998 to 52 meters per year. This retreat is caused by a decrease in precipitation. It is also caused by the warming of the upper troposphere. This warming trend is affecting most southern Andean glaciers. The Argentine side of the mountain may eventually become inaccessible due to this instability.

Mountaineers recognize several specific peaks on the mountain.

The highest peak is Anon, also known as Internacional, which reaches 3,484 meters. Other major peaks include Chileno at 3,262 meters and Argentino at 3,187 meters. Torre Ilse is another named peak at 2,585 meters. The mountain also has several named ridges, such as Filo Blanco and Filo Sur. Hermann Claussen was the first person to climb the mountain solo. He achieved this on January 29, 1934, after several attempts.

Tourism is a major part of life near Tronador. Many people visit the Refugio Otto Meiling mountain hut. This hut is named after a German mountaineer who guided many people. The hut is located about 1,200 meters vertically above Pampa Linda. It sits sandwiched between the Alerce and Castaño Overa glaciers. Most summer days allow for climbs of the Internacional peak. However, extreme heat can cause dangerous levels of rockfall. In January and February 2008, an unusually hot summer caused these risks. This shows how climate changes affect the safety of the mountain.

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🖼️ Images & Media (3)
File:Glacier Castaño Overo 1 Stevage.jpg
Glacier Castaño Overo 1 Stevage.jpg
File:Ventisquero Negro Stevage.jpg
Ventisquero Negro Stevage.jpg
File:Tronador.png
Tronador.png
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