Volcanoes
Mother Nature has several weapons in her arsenal, which she dispenses at will. Despite all our technological advances, we still cower in her presence whenever she vents her anger. Most of the time, the best thing we can do is to stay out of her path. Her tsunamis, hurricanes, volcanoes, earthquakes, etc are absolutely incredible destructive weapons. Let's check out one of her weapons, The Volcano
WHAT IS A VOLCANO
A volcano can refers to as an opening in the crust of a planetary mass object such as the Earth which allows the escape of hot lava, gases and volcanic ash from a magma chamber below the surface, thereby giving rise to a mountain which faces downward to the magma chamber. This site refers to volcanoes as a manifestation of the fiery power held inside the Earth.
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FORMATION OF VOLCANOES
When rock present in the mantle (a region between the molten iron core and thin crust surface) melts as a result of undergoing an extreme increase in temperature and pressure. When the volume of this molten rock has increased to a certain stage, it moves toward the surface of the Earth as magma, resulting in a volcanic eruption after which the magma cools to form solid rock. Over the course of several eruptions, the rock increases in size, resulting in the formation of a volcano.
TYPES OF VOLCANOES
Volcanoes can be classified into three types which are;
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Cinder Cone Volacanoes: These are volcanoes which lack horizontal layers but are instead a steep conical hill of composed of debris from volcanic eruptions which accumulates around the vent, towards the leeward side.Mount Fox, Monte Nuovo, Pisgah Crater, etc.
Composite Cone Volcanoes: These are volcanoes which are conical in shape. They are composed of layers of solid lava, along with layers of other rocks. Examples of composite volcanoes around the world include Mount Vesuvius, Mount Fuji, Mount Kilimanjaro, Mount Etna, etc.
Shield Volcanoes: These are volcanoes which are mainly composed of solidified lava. They get their name from the fact that they have a shield-like profile. Examples of these types off rocks include Mauna Kea, Mauna Loa, Mount Karthala, Mount Wrangell,etc.
TEXT SOURCE
http://www.bbc.co.uk/schools/gcsebitesize/geography/natural_hazards/volcanoes_rev1.shtml
http://www.csun.edu/~jao45194/volcano2.html
https://en.wikipedia.org/wiki/Volcano
https://www.ready.gov/volcanoes
https://www.nationalgeographic.com/environment/natural-disasters/volcanoes/
http://geology.com/volcanoes/
Do we have any volcanic formations in Nigeria?
Not any that I know of sir, Most Volcanoes lie in the "Ring Of Fire"
I lived in Bali for 5 years, moved back to Canada at the beginning of this year, so it's kinda crazy to see Mount Agung there going off lately:
I read about it. And people are saying it will get worse. It killed over a thousand people the last time it erupted in 1963