Expedition to an active volcano | 360°

A volcano (named after the Roman mythological god Vulcano) is a geological structure through which magma emerges that is divided into lava and gases from inside the Earth. The rise of magma occurs in episodes of violent activity called eruptions, which can vary in intensity, duration and frequency, from gentle lava flows to extremely destructive explosions. Occasionally, volcanoes acquire a conical shape by the accumulation of material from previous eruptions. On the summit is its crater or boiler.

Typically, volcanoes form at the boundaries of tectonic plates, although there are hot spots, where there is no contact between plates, as is the case in the Hawaiian Islands.

Volcanoes can have many shapes and lay off different materials. Some of the most common forms are the stratovolcano, the slag cone, the volcanic caldera and the shield volcano. There are also several underwater volcanoes located along the ocean ridges. Some volcanoes reach an altitude above 6000 meters above sea level. The highest volcano in the world is the Nevado Ojos del Salado, in Argentina and Chile, being also the second highest summit in the southern and western hemispheres (only surpassed by the Argentine hill Aconcagua).

Volcanoes not only exist on Earth, but also on other planets and satellites. Some are formed by specific cold materials and are called cryovolcanoes. In them, ice acts like rock, while internal liquid cold water acts like magma; This occurs on the moon of Jupiter called Europe.

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