What is the Meaning & Definition of volcanism

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For the geology of volcanism are that set of geological phenomena linked to the volcanoes, the origin and the same activity.
The concept arises and is closely related with Vulcan who at the time of the Romans, and more precisely to the Roman mythology, Vulcan was the God of fire and metal.
Basically, the volcanism explains the formation of the Earth from the fire that is generated in its interior.
The volcanoes are those channels that establish a direct communication between the Earth's surface and the deepest levels of the crust. The volcano, then, is that opening that we usually find in the mountains and every so long to expel lava, gases, smoke and ashes through a process that is known as eruption.
The eruption in question will take place when magma, that is the mixture of molten rock and gases, it is under pressure, begins to ascend to come definitely to the surface through the chimney of the volcano.
Meanwhile, we can find the following types of volcanoes, dormant volcano or extinct (there are records of its eruptive activity) and active volcano (recorded eruptive activity or failing registered them very recently).
Super volcanoes, on the other hand, are those types of volcanoes that produce the most voluminous eruptions on the surface of the Earth. Magma who ejecting them often result in marked and profound changes in the climatic conditions of the place which hit, keeping the above alterations even during long years and also tend to leave as another stunning balance deep transformations in the landscape of the surroundings of the volcano in question.
The type of volcanic eruption, Hawaiian, peaks, vulcaniano, Vesuvius, péléen, among others, shall be determined by the viscosity, temperature, composition and elements dissolved in the magma.
Article contributed by the team of collaborators.