The Nevado El Cisne ( en, The Snowy Swan) is a volcano in the

Central Ranges Central Ranges (code CER) is an Australian bioregion, with an area of 101,640.44 square kilometres (39,244 sq mi) spreading across two states and one territory: South Australia, Western Australia, and the Northern Territory.Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

in Colombia. Its summit is at an altitude of . The mountain is one of the five

lava dome In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruption ...

s of the

Nevado del Ruiz The Nevado del Ruiz (), also known as La Mesa de Herveo ( en, Mesa of Herveo, the name of the nearby town) is a volcano on the border of the departments of Caldas and Tolima in Colombia, about west of the capital city Bogotá. It is a strato ...

volcano complex. Despite the ''nevado'' part of the name, indicating a permanently snow-capped mountain, the summit of El Cisne is now below the permanent snow line as a result of global warming, and it is no longer considered a true ''nevado''."Ruiz-Tolima Volcanic Massif", US Geological Survey
/ref> The volcano is located over the

Palestina Fault The Palestina Fault ( es, Falla de Palestina) is a regional sinistral oblique thrust fault in the departments of Antioquia, Caldas Department, Caldas and Bolívar Department, Bolívar in central Colombia. The fault has a total length of and runs a ...

, that crosscuts the underlying El Bosque Batholith of

Eocene The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', " ...

age, dated at 49.1 ± 1.7 Ma.Plancha 225, 1998González, 2001, p.50

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* * Mountains of Colombia Volcanoes of Colombia Andean Volcanic Belt Quaternary Colombia Geography of Caldas Department Geography of Tolima Department Four-thousanders of the Andes Lava domes {{Colombia-geo-stub

See also

References

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