describe three types of plate boundaries where volcanic eruptions can occur?
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['Hot spots,', 'Divergent plate boundaries (such as rifts and mid-ocean ridges), and.', 'Convergent plate boundaries (subduction zones)']
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Two main tectonic structures are spreading centers and subduction zones. Spreading centers occur at the boundary between two plates that are moving apart, called divergent plate boundaries. Here the plate motion opens a gap between the plates and magma from the mantle rises up through it.
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Volcanoes, mountain ranges and earthquakes are all formed by convergent boundaries although some volcanoes and earthquake are also produced by divergent boundary, while other earthquake are produced by transform fault boundary.
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The location where two plates meet is called a plate boundary. Plate boundaries are commonly associated with geological events such as earthquakes and the creation of topographic features such as mountains, volcanoes, mid-ocean ridges, and oceanic trenches.
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The Earth's crust can be pictured like an egg shell, fractured into many sections, which we call tectonic plates. There are three types of plate boundaries: convergent, divergent and transform. Convergent boundaries are where two plates are moving towards each other, and this is where subduction zones can be created.
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Divergent Plate Boundaries Divergent boundaries can be mid-ocean ridges or continental rift valleys. At these boundaries, two neighboring plates move away from each other. Continental rift valleys are characterized by normal faulting and basalt-rich volcanoes.
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When magma erupts at the surface it can form different types of volcanoes depending on the viscosity, or stickiness, of the magma, the amount of gas in the magma, and the way in which the magma reached the surface. Different types of volcanoes include stratovolcanoes, shield, fissure vents, spatter cones and calderas.
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Another event that can occur at a convergent boundary, usually one between two plates bearing continental crust, is continental collision. When two landmasses collide, they push into each other, deforming and creating tall, folded mountains.
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Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Divergent boundaries also form volcanic islands, which occur when the plates move apart to produce gaps that molten lava rises to fill.
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Students explore geologic events at converging plate boundaries. BACKGROUND: Most earthquakes and volcanoes occur because of the movement of the plates, especially as plates interact at their edges or boundaries. At diverging plate boundaries, earthquakes occur as the plates pull away from each other.
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A convergent plate boundary , also known as a destructive plate boundary , usually involves an oceanic plate and a continental plate. The plates move towards one another and this movement can cause earthquakes. As the plates collide, the oceanic plate is forced beneath the continental plate.
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Volcanism occurs regularly at two of the three types of plate Boundaries. The most volcanism occurs at diverging plate boundary where plates separate. Volcanoes also form at converging plate boundaries where one plate dives beneath the other at subduction zones.
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Mountain building is most directly associated with convergent plate boundaries. 15. A volcanic island arc occurs where two oceanic plates converge and one is subducted beneath the other. The interaction of these two plates results in partial melting of the mantle wedge located above the subducting plate.
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1. Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust. The denser plate is subducted underneath the less dense plate.
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The three main types are convergent, divergent and conservative. Divergent plate boundaries are where new crust is created. Mid ocean ridges are the main type. Convergent plate boundaries are where two plates collide.
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A convergent boundary is an area on Earth where two or more lithospheric plates collide. One plate eventually slides beneath the other causing a process known as subduction. ... Convergent boundaries occur between oceanic-oceanic lithosphere, oceanic-continental lithosphere, and continental-continental lithosphere.
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Most volcanoes form at the boundaries of Earth's tectonic plates. These plates are huge slabs of the Earth's crust and upper mantle, which fit together like pieces of a puzzle. These plates are not fixed, but are constantly moving at a very slow rate. They move only a few centimeters per year.