What are the 4 types of plate boundaries?
Tectonic Plates and Plate Boundaries
- Convergent boundaries: where two plates are colliding. Subduction zones occur when one or both of the tectonic plates are composed of oceanic crust.
- Divergent boundaries – where two plates are moving apart.
- Transform boundaries – where plates slide passed each other.
What happens at the boundaries of plates?
Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth’s mantle to the surface, solidifying to create new oceanic crust. Thus, at convergent boundaries, continental crust is created and oceanic crust is destroyed. Two plates sliding past each other forms a transform plate boundary.
What plate boundary causes fault lines?
Normal faults are most common at divergent plate boundaries, Strike-slip faults are most common at transform boundaries, and thrust faults are most commonly seen at convergent plate boundaries.
What is a plate boundary line?
Tectonic Plate Map. For example, sections of Earth’s crust can come together and collide (a “convergent” plate boundary), spread apart (a “divergent” plate boundary), or slide past one another (a “transform” plate boundary). Each of these types of plate boundaries is associated with different geological features.
How are the different types of plate boundaries different?
There are three types of tectonic plate boundaries: Plates rip apart at a divergent plate boundary, causing volcanic activity and shallow earthquakes; At a convergent plate boundary, one plate dives (“subducts”) beneath the other, resulting in a variety of earthquakes and a line of volcanoes on the overriding plate;
When does a plate boundary become a fault line?
Plate boundaries may become fault lines. This occurs due to pressure when the plates are moving towards each other or sliding along the boundary. If the plates are moving away from each other the boundary is known as a rift.
What happens at a convergent and transform plate boundary?
At a convergent plate boundary, one plate dives (“subducts”) beneath the other, resulting in a variety of earthquakes and a line of volcanoes on the overriding plate; Transform plate boundaries are where plates slide laterally past one another, producing shallow earthquakes but little or no volcanic activity.
What happens to oceanic crust at plate boundaries?
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.