Volcanic activity sometimes occurs within the rift. Contributor: Hobart King Publisher, Geology. What is the San Andreas Fault? How did the Hawaiian Islands Form? Find Other Topics on Geology. Maps Volcanoes World Maps. Teaching Plate Tectonics. Earth's Internal Structure. Divergent Boundary. Convergent Boundary. Transform Boundary. Tectonic Features Map. Divergent Plate Boundary - Oceanic. Divergent Plate Boundary - Continental.
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Minerals: Information about ore minerals, gem materials and rock-forming minerals. When two plates come together, it is known as a convergent boundary. The impact of the colliding plates can cause the edges of one or both plates to buckle up into a mountain ranges or one of the plates may bend down into a deep seafloor trench. A chain of volcanoes often forms parallel to convergent plate boundaries and powerful earthquakes are common along these boundaries.
The Pacific Ring of Fire is an example of a convergent plate boundary. At convergent plate boundaries, oceanic crust is often forced down into the mantle where it begins to melt. Magma rises into and through the other plate, solidifying into granite, the rock that makes up the continents. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed.
At transform boundaries, plates move past each other. This is one of the most common causes of earthquakes. At convergent boundaries, plates move toward each other. They can push together and cause mountain ranges to form.
At other times, one plate gets pushed down beneath the other plate. This can cause volcanoes. At divergent boundaries, plates move apart from each other.
When this happens, new plate material forms.
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