Cerro Bravo is a

stratovolcano A stratovolcano, also known as a composite volcano, is a typically conical volcano built up by many alternating layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with ...

located in Tolima,

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

, north of the

Nevado del Ruiz Nevado del Ruiz (), also known as La Mesa de Herveo () is a volcano on the border of the departments of Caldas and Tolima in Colombia, being the highest point of both. It is located about west of the capital city Bogotá. It is a stratovolca ...

volcano. The rock type of the volcano is

andesite Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomina ...

.Plancha 206, 1998

Eruptive history

As with many volcanoes in the region, Bravo's eruptions are often characterized by a central vent (caldera) eruption, followed by an explosive eruption and

pyroclastic flow A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ground away from a volcano at average speeds of b ...

s. However, it is unique in the fact that its eruption have also produced

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 eruptions ...

s in its caldera. Such eruptions occurred in 1720 ± 150 years, 1050 ± 75 years, and 750 AD ± 150 years (through

radiocarbon dating Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for Chronological dating, determining the age of an object containing organic material by using the properties of carbon-14, radiocarbon, a radioactive Isotop ...

). Eruptions consisting of just a central vent eruption and subsequent explosive eruption took place in 1330 ± 75 years, 1310 BC ± 150 years, 1050 BC ± 200 years and 4280 BC ± 150 years.

Gallery

File:Volcán Cerro Bravo.jpg, 2009 File:Volcan Cerro Bravo Tolima Colombia.jpg, 2009 File:Cerro Bravo 2.jpg, 2014

References

Bibliography

* * Andean Volcanic Belt

Bravo Bravo(s) or The Bravo(s) may refer to: Arts and entertainment Music Groups and labels * Bravo (band), a Russian rock band * Bravo (Spanish group), represented Spain at Eurovision 1984 * Bravo Music, an American concert band music publishing compa ...

Quaternary South America Quaternary stratovolcanoes Geography of Tolima Department Four-thousanders of the Andes VEI-4 volcanoes {{Colombia-geo-stub

Eruptive history

Gallery

See also

References

Bibliography