The three main types of plate boundary are:
At a convergent boundary the two plates are moving towards each other. Depending on the type of plate this can cause the formation of fold mountains (a process known as orogenesis - where a continental plate collides with a second continental plate), the formation of a subduction zone characterized by oceanic trenches and volcanic arcs (where oceanic crustal plates collide with and are forced under continental crustal plates). Occasionally in the same environment obduction can occur where small slivers of oceanic crust are forced up over the continental crust, thus being preserved.
At divergent boundaries the plates are moving away from each other and as such create tensile stress features such as normal faults. These can form horst and graben structures in the crust which under further extensional stress can become rift zones and ultimately form new mid oceanic ridges.
Transform faults are characterized by the parallel motion of the two differing plates (i.e. they slide past each other). Crust is neither created nor destroyed at transform boundaries, however there can be seismic activity.
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convection currents in the mantle provide the basic driving forces for plate motions.
The boundary where a trench can be found is called a convergent plate boundary. It can also be termed a destructive plate boundary in plate tectonics.
The plate boundary between the Eurasian plate and African plate.
It is a convergent/destructive plate boundary.
Convergent boundary Convergent boundary
each plate boundary has a different boundaries. if you want the movement for a specific plate boundary, write the name of the plate boundary. :]
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They are classified based on the vector of relative plate motion at the boundary. For example a boundary where the plates are moving away from each other is a divergent boundary, one where they are moving towards each other is a convergent boundary and one in which they are sliding past each other is a transform boundary.
Mount Veniaminof in Alaska is located along the Aleutian subduction zone, which is a convergent plate boundary where the Pacific Plate is being subducted beneath the North American Plate. This subduction zone is characterized by frequent volcanic activity and seismic events due to the collision of the two tectonic plates.
Convergent plate boundary, divergent plate boundary and strike-slip (transform) plate boundary.
How are what rocks different?
Divergent plate boundary
The plate boundary for Unzen volcano is the subduction zone where the Philippine Sea Plate is being subducted beneath the Eurasian Plate. This subduction zone is part of the larger convergent boundary between the Philippine Sea Plate and the Eurasian Plate.
It is called a divergent plate boundary.
convection currents in the mantle provide the basic driving forces for plate motions.
convection currents in the mantle provide the basic driving forces for plate motions.
An example of a divergent plate boundary is the Mid-Atlantic Ridge, where the Eurasian Plate and North American Plate are moving apart. An example of a transform plate boundary is the San Andreas Fault in California, where the Pacific Plate and North American Plate are sliding past each other horizontally.