Types of volcanic eruption in the context of "Magmatic eruption"

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⭐ Core Definition: Types of volcanic eruption

A volcanic eruption occurs when material is expelled from a volcanic vent or fissure. Several types of volcanic eruptions have been distinguished by volcanologists. These are often named after famous volcanoes where that type of behavior has been observed. Some volcanoes may exhibit only one characteristic type of eruption during a period of activity, while others may display an entire sequence of types all in one eruptive series.

There are three main types of volcanic eruptions. Magmatic eruptions involve the decompression of gas within magma that propels it forward. Phreatic eruptions are driven by the superheating of steam due to the close proximity of magma. This type exhibits no magmatic release, instead causing the granulation of existing rock. Phreatomagmatic eruptions are driven by the direct interaction of magma and water, as opposed to phreatic eruptions, where no fresh magma reaches the surface.

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Types of volcanic eruption in the context of Submarine volcano

Submarine volcanoes are underwater vents or fissures in the Earth's surface from which magma can erupt. Many submarine volcanoes are located near areas of tectonic plate formation, known as mid-ocean ridges. The volcanoes at mid-ocean ridges alone are estimated to account for 75% of the magma output on Earth. Although most submarine volcanoes are located in the depths of seas and oceans, some also exist in shallow water, and these can discharge material into the atmosphere during an eruption. The total number of submarine volcanoes is estimated to be over one million (most are now extinct) of which some 75,000 rise more than 1 kilometre (0.62 miles) above the seabed. Only 119 submarine volcanoes in Earth's oceans and seas are known to have erupted during the last 11,700 years.

Hydrothermal vents, sites of abundant biological activity, are commonly found near submarine volcanoes.

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LINKED FROM (PARENTS)
← Submarine volcano
LINKS TO (CHILDREN)
Plinian eruption → Eruption column → Hawaiian eruption → Lava → Strombolian eruption → Volcanic vent → Fissure vent → Volcanologists → Volcano → Magmatic eruption → Magma → Phreatic eruption → Superheating → Steam → Granulation (process) → Phreatomagmatic eruption →