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Why do oceanic hot spot volcanoes often from a long line of volcanic islands?
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When are island arc volcanoes formed?
The island-arc volcanoes are formed from the subduction of an oceanic tectonic plate under another tectonic plate, and often parallel an oceanic trench.
What is a string of volcanoes along an ocean to ocean convergent boundary?
A chain of volcanoes is called a volcanic arc.
When are island-arc volcanoes formed?
The island-arc volcanoes are formed from the subduction of an oceanic tectonic plate under another tectonic plate, and often parallel an oceanic trench.
How does volcanic island chain (like Japan) form?
the plates collide together and both plates push upward, forming a volcano.
What is the differences between a volcanic island and a coral island?
Volcanic islands are formed of igneous rock and lava. They tend to be tall, and have steep slopes. Coral islands are calcium carbonate (chemically the same as limestone) and are formed from the secretions of sea coral- an animal. They tend to be low to the water, and relatively flat.
What are three major islands arcs?
Island arcs are also called oceanic arcs. Many volcanoes form near converging plate boundaries where subduction occurs. Subduction causes slabs of oceanic crust to sink beneath a deep-ocean trench into the mantle. The crust melts and forms magma, which then rises back toward the surface. Volcanoes form when the magma erupts as lava. At the boundary where two oceanic plates collide, volcanoes can create a string of islands called an island arc. There are many island arcs. The main ones that we read of most often include Japan, New Zealand, Indonesia, Caribbean Islands, Philippines, and the Aleutians.
Why do volcanoes erupt on islands?
It is not so much that volcanoes tend to occur on islands as much as many islands are formed by volcanoes. Subduction zones and hot spots often cause volcanoes to develop on the sea floor. Erupted material then piles up to form islands.
Why do oceanic hot-spot volcanos often form a long line of volcanic island?
Because the lithospheric ocean plate moves with plate tectonics over the stationary mantle based hot spot, forming a series of volcanoes.
Why is converging the most likely to cause a volcano?
At a convergent plate boundary an oceanic plate subducts under a continental plate or another oceanic plate. The subducting plate takes volatiles such as water with it. These volatiles lower the melting point of the mantle rock. Molten material then rises to the surface, forming volcanoes. This is the most common cause of volcanoes on continents. Those that form from the sea floor often rise up to form volcanic islands. In truth, most of the world's volcanoes probably occur at divergent boundaries. However, the vast majority of those remain deep underwater where they are difficult to observe.
Are there any plants by volcanoes?
Yes. In fact volcanic soils are often very fertile.
In plate tectonic theory what does a hot spot create?
A hot spot will often generate volcanoes. Many hot spots show a chain of extinct volcanoes in one direction, indicating that the plate moved over the stationary hot spot.
What are three major arces?
Island arcs are also called oceanic arcs. Many volcanoes form near converging plate boundaries where subduction occurs. Subduction causes slabs of oceanic crust to sink beneath a deep-ocean trench into the mantle. The crust melts and forms magma, which then rises back toward the surface. Volcanoes form when the magma erupts as lava. At the boundary where two oceanic plates collide, volcanoes can create a string of islands called an island arc. There are many island arcs. The main ones that we read of most often include Japan, New Zealand, Indonesia, Caribbean Islands, Philippines, and the Aleutians.
