09/23/2021 at 4:04 PM CEST
Spain has two volcanic areas considered active -those where eruptions have occurred in the last 10,000 years-, which are the Canary Islands and the region of La Garrotxa, in Girona, but there are also dormant volcanoes in Cabo de Gata (Almería), Cofrentes (Valencia), the Columbretes Islands (Castellón) and Campo de Calatrava (Ciudad Real). In total, there are almost a hundred cones distributed throughout the national territory.
Currently the Canary Islands is the only area of high volcanic risk in Spain and the islands of La Palma, Tenerife and El Hierro the most active, according to the National Geographic Institute (IGN). In this archipelago there have been all the volcanic eruptions recorded in the last centuries in Spain, seven of them on the island of La Palma.
The other area considered active, although without having registered an eruption for thousands of years, is the Garrotxa region, in Girona, where the Natural Park of the Volcanic Zone of the same name is located, reports the . agency.
In the area there are 40 volcanic cones, among which are the Santa Margarida volcano, in the municipality of Santa Pau, whose last eruption took place 11,000 years ago; the Croscat, of the Strombolian type, the youngest and largest in the area and also the largest in the Iberian Peninsula.
Also, in the middle of the city of Olot is the Montsacopa, which with a crater 120 meters in diameter is aligned between the Mopntolivet and La Garrinada volcanoes.
Volcanism has been documented between 15 and 16 million years ago in Cabo de Gata (Almería), when magmatic activity began in the Alboran Sea. There is no active sign either, but it is the most complex volcanic complex in the Iberian Peninsula since it has submarine and surface volcanoes, such as lava domes, such as Fraile and Fraile Chico, and volcanic calderas, such as La Caldera del Plomo or Majada Redonda.
Also asleep is the Valencian volcano of Cofrentes, located on the hill of Agrás, about 500 meters above sea level and close to the nuclear power plant of the same name.
Like the previous one, the volcano of Las Columbretes Islands, off the coast of Castellón, in which according to some studies there was activity a few 300,000 years.
Likewise, in Castilla-La Mancha, specifically in Campos de Calatrava, in Ciudad Real, a volcanic area of about 5,000 square kilometers is located, where there are some 300 volcanic manifestations documented, among them the Cerro Gordo volcano, located between Granátula and Valenzuela, or that of Columba, which with 5,000 years of life is located between Calzada and Granatula.
What’s more, in Valverde, also in Ciudad Real, is the Posadilla or Fuentillejos volcano, in whose crater a lagoon was created by the contact of the lava in contact with an important layer of underground water.
In Spain, according to the IGN, it is necessary to differentiate, on the one hand, the volcanism that is located in the peninsular area and in some of its nearby islands and, on the other, that found in the Canary Islands.
While the origin of the first is related to the collision between the African and Eurasian plates, that of the Canary Islands is with the formation of a hot spot inside an oceanic plate, located in contact with the African continent.
40 volcanoes in the Canary Islands
In the Canary Islands there are four dozen volcanoes. The most famous of all is the Teide, in Tenerife, the highest peak in Spain (3,715 meters) and the third highest volcano in the world. The largest eruption of which there is news in Spanish territory occurred at the Timanfaya volcano, in Lanzarote, and lasted 2,055 days, between 1730 and 1736.
Until now in Cumbre Vieja, the last eruption had been that of the Tagoro submarine volcano, off the coast of El Hierro, in October 2011. 50 years ago, in 1971, the previous terrestrial eruption was recorded, in the Teneguía volcano. , also on La Palma.
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