Century21- Volcan Cosiguina part 1
- Duration: 0:18
- Published: 2008-07-11
- Uploaded: 2010-08-26
- Author: meba600
Vista volcan y Laguna Cosiguina.
| Name | Cosigüina |
|---|---|
| Photo | Cosiguina.JPG |
| Photo caption | |
| Elevation m | 872 |
| Elevation ref | |
| Prominence | |
| Location | Chinandega Department, Nicaragua |
| Coordinates | |
| Topo | |
| Type | Stratovolcano |
| Age | |
| Last eruption | 1859 |
| First ascent | |
| Easiest route |
Cosigüina (also spelt Cosegüina) is a stratovolcano located in the western part of Nicaragua. It forms a large peninsula extending into the Gulf of Fonseca. The summit is truncated by a large caldera, 2 x 2.4 km in diameter and 500 m deep, holding a substantial crater lake (Laguna Cosigüina). This cone has grown within an earlier caldera, forming a somma volcano. The earlier caldera rim is still exposed on the north side, but has been buried by the younger cone elsewhere.
The volcano has been quiet since 1859, only an instant in terms of geological time. An earthquake swarm was measured near Cosigüina in 2002, indicating that tectonic forces are still active in the region although the volcano is somewhat isolated from the line of more recently active Central American volcanoes to the northwest and southeast. The only indicators of hydrothermal activity at the volcano are intermittently observed gas bubbles in Laguna Cosigüina and a hot spring along the eastern flank of the volcano. The fairly uniform vegetation cover on the volcano’s sides also attests to a general lack of gas emissions or “hot spots” on the 872-meter-high cone.
Category:Mountains of Nicaragua Category:Volcanoes of Nicaragua Category:Stratovolcanoes Category:Volcanic calderas Category:Crater lakes Category:VEI-5 volcanoes
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