Concepción is one of two

volcano A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates ...

es (along with

Maderas With a height of , Maderas is the smaller of the two which make up the island of Ometepe, situated in Lake Nicaragua in Nicaragua, Central America. Unlike Concepción, the other volcano on the island, Maderas has not been active in historical ...

) that form the island of

Ometepe Ometepe is an island formed by two volcanoes rising out of Lake Nicaragua in the Republic of Nicaragua. Its name derives from the Nahuatl words ''ome'' (two) and ''tepetl'' (mountain), meaning "two mountains". It is the largest island in Lake N ...

, which is situated in

Lake Nicaragua Lake Nicaragua or Cocibolca or Granada ( es, Lago de Nicaragua, , or ) is a freshwater lake in Nicaragua. Of tectonic origin and with an area of , it is the largest lake in Central America, the 19th largest lake in the world (by area) and the t ...

Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the coun ...

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

. Concepción is an active

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

that forms the northwest part of the Isla de Ometepe. Concepción is tall and rests on a 1 km (3,300ft) thick base of

Quaternary The Quaternary ( ) is the current and most recent of the three periods of the Cenozoic Era in the geologic time scale of the International Commission on Stratigraphy (ICS). It follows the Neogene Period and spans from 2.58 million year ...

lacustrine A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger ...

mudstones. It is considered a "pristine" volcano because there has been no influence of other volcanoes on its growth. The growth of the volcano comes in phases based on weaknesses of the crust that the volcano rests on. As it grows from additional

magma Magma () is the molten or semi-molten natural material from which all igneous rocks are formed. Magma is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natura ...

flow, the volcano grows in

mass Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a physical body, until the discovery of the atom and particle physics. It was found that different atoms and different ele ...

and exerts pressure on the crust. This causes shifts which in turn cause more volcanic growth. This affects the

magma chamber A magma chamber is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or magma, in such a chamber is less dense than the surrounding country rock, which produces buoyant forces on the magma that tend to drive it up ...

which begins the cycle again with growth because of magmatic flow. Since 1883, Concepción has erupted at least 25 times; its last eruption was on 9 March 2010. Concepción's eruptions are characterized by frequent, moderate-sized explosions. Active

fumaroles A fumarole (or fumerole) is a vent in the surface of the Earth or other rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volcan ...

are present just north of Concepción's summit crater. Adventure seekers from all over the world travel to Ometepe Island to climb Volcán Concepción. There are numerous trails in the tropical forest that surrounds the volcano's ash-covered peak.

References

External links

Volcano World: Concepción, Nicaragua
Mountains of Nicaragua Stratovolcanoes of Nicaragua Active volcanoes Rivas Department Holocene stratovolcanoes First 100 IUGS Geological Heritage Sites {{Nicaragua-geo-stub

See also

References

External links