Volcanoes

by lsorlows
Last updated 8 years ago

Discipline:
Science
Subject:
Earth Sciences

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Volcanoes

Volcanoes

Volcanoes are naturally occuring phenomenons that result from plate tectonics. They are well known to the public due to their destructive nature. There are several different kinds of volcanoes that appear throughout the world; However, humans tend to only associate the word volcano with the most destructive kind.

There are 3 types of volcanoes. Humans are familier with the first kind: stratovolcanoes, or composite volcanoes. They are the most destructive. The other two, less publicized kinds are the cinder cone volcanoes and the shield volcanoes.

Stratovolcanoes (composite)

Stratovolcanoes are the most noticible of all volcanoes. They cause massive explosions that release tons of ash into the air and deadly pyrclastic and lava flows. These volcanoes have resulted in many famous eruptions in the past, such as Mount Vesuvius destroying Pompeii in 79 AD and Mount Saint Helens erupting in 1980.

The 1990 eruption of the Stratovolcano Mount Redoubt in Alaska

Cinder Cones are much smaller than the other two types of volcanoes. They grow no more than several hundred meters tall and are typically found in clusters; and it is not uncommon for them to around the fringes of stratovolcanoes and shield volcanoes. Cinder Cones are formed by the continual buildup of its own ash, cinders and bombs that fall back down around the single vent.

Shield Volcanoes are very different from the stratovolcano. While they do produce the largest volcanoes in the world, such as Mauna Loa in Hawaii, their method of eruption is more low key. Shield volcanoes are formed from lava flows that lack the explosiveness of stratovolcanoes. The lava tends to flow larger distances than the other types of volcanoes' flows; and as a result, shield volcanoes tend to have a gentle slope and dome shape, hence their name shield

Shield Volcanoes

Cinder Cone Volcano


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