Thousands of people have been evacuated from areas south of Manila after the Mayon Volcano erupted recently,
About Mayon Volcano:
It is an active stratovolcano located in Albay province on Luzon Island in the Philippines.
It is part of the Pacific Ring of Fire.
It is located on the eastern side of Luzon, beside the Philippine Trench, which is the convergent boundary where the Philippine Sea Plate is driven under the Philippine Mobile Belt.
It is Philippines’ most active volcano.
Popular with climbers and campers, the volcano is the centre of Mayon Volcano National Park.
What is a Stratovolcano?
It is a tall, steep, and cone-shaped type of volcano.
Unlike flat shield volcanoes, they have higher peaks.
They are typically found above subduction zones, and they are often part of large volcanically active regions, such as the Ring of Fire that frames much of the Pacific Ocean.
Stratovolcanoes comprise the largest percentage (~60%) of the Earth’s individual volcanoes, and most are characterized by eruptions of andesite and dacite, lavas that are cooler and more viscous than basalt.
These more viscous lavas allow gas pressures to build up to high levels. Therefore, these volcanoes often suffer explosive eruptions.
They are usually about half-half lava and pyroclastic material, and the layering of these products gives them their other common name of composite volcanoes.
At the peak, stratovolcanoes usually have a small crater.
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