A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, lava spews from long fissures and geysers spurt superheated water. Frequent earthquakes strike along the rift. Beneath the rift, magma—molten rock—rises from the mantle. It oozes up into the gap and hardens into solid rock, forming new crust on the torn edges of the plates. Magma from the mantle solidifies into basalt, a dark, dense rock that underlies the ocean floor. Thus at divergent boundaries, oceanic crust, made of basalt, is created.
Answer:
For example, continental-continental convergence:
When continental plates collide, no subduction occurs as the plates are of similar buoyancy. However, the great amount of friction produced at the collision of plates causes the plates to fold and buckle, forming fold mountains.
It is friction between the moving plates as well as the build-up of sediments near the edges of the plates that causes mountains to be formed.
