Nevado El Cisne
{{Short description|Mountain in Colombia}}
{{Infobox mountain
| name = Nevado El Cisne
| other_name =
| photo =
| photo_size =
| photo_alt =
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| elevation_m = 4700
| prominence_m =
| prominence_ref =
| listing = Los Nevados National Natural Park
| parent_peak = Nevado del Ruiz
| location = Caldas & Tolima, Colombia
| range = Central Ranges
Andes
| map = Colombia
| map_caption = Location of Nevado El Cisne in Colombia
| map_size =
| label = Nevado El Cisne
| label_position =
| coordinates = {{coord|4|50|35|N|75|21|08|W|type:mountain_region:CO-TOL_scale:100000|format=dms|display=inline,title}}
| range_coordinates =
| coordinates_ref = [http://www.volcano.si.edu/world/volcano.cfm?vnum=1501-02=&volpage=synsub "Nevado del Ruiz: Synonyms and Subfeatures", Global Volcanism Program, Smithsonian Institution]
| topo =
| age =
| volcanic_belt = North Volcanic Zone
Andean Volcanic Belt
| last_eruption =
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}}
The Nevado El Cisne or Nevado del Cisne ({{langx|en|The Snowy Swan}}), also known as Paramillo el Cisne or Paramillo del Cisne ({{langx|en|The Little Paramo-like Swan}}), is a volcano in the Central Ranges of the Andes in Colombia. Its summit is at an altitude of approximately {{convert|4700|m|ft}}.
The mountain belongs to the Cisne-Morro Negro lava dome, a small volcanic complex near Nevado del Ruiz.
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. Hence it is now commonly referred to as a paramillo.[http://pubs.usgs.gov/pp/p1386i/colombia/ruiz.html "Ruiz-Tolima Volcanic Massif", US Geological Survey]
Geology
Nevado El Cisne is the summit of a small volcanic complex which includes El Cisne's sister peak, Morro Negro, and several subpeaks. They are small stratovolcanoes. The complex has well-preserved morphology with barely eroded lava flows, suggesting recent volcanic activity.
Five emission centers have been identified as generators of lava flows. The lava flows are andesitic and present notably smaller volumes compared to those observed in neighbouring volcanic complexes (Ruiz and Santa Isabel).
The volcano is located over the Palestina Fault, that crosscuts the underlying El Bosque Batholith of Eocene age, dated at 49.1 ± 1.7 Ma.Plancha 225, 1998González, 2001, p.50
See also
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References
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= Bibliography =
- {{cite report |last=González |first=Humberto |year=2001 |title=Geología de las planchas 206 Manizales y 225 Nevado del Ruiz - 1:100,000 - Memoria explicativa |url=http://aplicaciones1.sgc.gov.co/Bodega/i_vector/130/10/0100/20081/documento/pdf/0101200811101000.pdf |publisher=INGEOMINAS |pages=1–93 |access-date=2017-06-09}}{{dead link|date=June 2023}}
- {{cite map |last=Mosquera |first=Darío |last2=Martín |first2=Pedro |last3=Vesga |first3=Carlos |last4=González |first4=Humberto |year=1998 |title=Plancha 225 - Nevado del Ruiz - 1:100,000 |url=https://drive.google.com/open?id=0BwFQPMJEi17QaEtlRlM3NnlUeGc |publisher=INGEOMINAS |pages=1 |access-date=2017-06-06 |url-access=subscription}}
{{Volcanoes of Colombia|state=expanded}}
Category:Mountains of Colombia
Category:Volcanoes of Colombia
Category:Geography of Caldas Department
Category:Geography of Tolima Department
Category:Four-thousanders of the Andes
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