Different Types of Volcanoes Essay - 638 Words.
Shield volcanoes are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior's shield. They are built up slowly by the accretion of thousands of flows of highly fluid basaltic (from basalt, a hard, dense dark.
Shield volcanoes, so named for their broad, shield-like profiles, are formed by the eruption of low-viscosity lava that can flow a great distance from a vent. They generally do not explode catastrophically. Since low-viscosity magma is typically low in silica, shield volcanoes are more common in oceanic than continental settings. The Hawaiian volcanic chain is a series of shield cones, and.
Shield volcanoes form primarily in the oceans although they can form anywhere on Earth. Scientists estimate there are over one million seamounts on the ocean floors. A new shield volcano forms when a crack on the surface of the Earth begins erupting thin layers of basalt lava. Over a long period of time the thin layers of lava erupted from the volcano’s vent creates a shield shaped volcano.
As with all volcanoes, there are negative effects of shield volcano eruptions. However, the other two major types of volcanoes -- cinder cones and stratovolcanoes -- feature eruptions that are much more violent than those of shield volcanoes. The relatively peaceful eruption from shield volcanoes is known as a Hawaiian eruption.
There are three major types of volcanoes, cinder cone volcanoes, composite volcanoes, and shield volcanoes.. The second major type of volcano, the composite volcano, in contrast to the cinder cone can grow much larger. One famous example of a composite volcano is Mt.. The third type of volcano is the shield volcano.. Word Count: 431.
Shield-type volcanoes are usually spread out over a large area and have gently sloping sides. They are caused by minor explosions (usually Hawaiian) and erupt more frequently than stratovolcanoes. Most of the major volcanoes in Hawaii are shield volcanoes. Scoria Cones are the most common volcano type, usually caused by Strombolian eruptions.
Special Features of Shield Volcanoes Shield volcanoes have many special features that set it apart from the other volcanoes in the world. Somethings that make them different is the volcanoes shape, lava, and even the explosion is different from many other volcanoes. These volcanoes are prev.