The name Wegner gave to the supercontinent.
Transform Fault Boundary
Occur when two plates grind past each other.
Warm, less dense material rises and cooler, more dense material sink.
Deep faulted structures that occur at a divergent boundary between two landmasses.
Rocks that show the location of the magnetic poles at the time of their formation
Oceanic lithosphere slides down the sides of the oceanic ridge, pushing the plates apart.
The segments of the lithosphere.
The surface feature created at a subduction zone.
When rocks show opposite magnetism as the present magnetic field.
When rocks show the same magnetism as the present magnetic field
The theory that the rigid lithosphere of Earth is divided into different sections that "float" along on top of the weaker mantle region.
Occur when two plates move toward each other.
The elevated seafloor that develops along a divergent plate boundary.
A rising plume of mantle material is located below the crust, which melts the rock near the surface, allowing magma to move though.
The continents were once connected as a single supercontinent, and slowly moved apart.
Continental volcanic arc
Produced in part by the volcanic activity that is caused by the subduction of oceanic lithosphere under a continental plate.
Old oceanic crust, which is relatively cool, sinks into the asthenosphere (mantle) and "pulls" the trailing lithosphere (crust) along
The process by which plate tectonics produces new oceanic lithosphere
Hot plumes of rock that are the upward flowing arms in mantle convection
Destructive plate margin where oceanic crust is being pushed down into the mantle by a second plate.
Volcanic island arc
A chain of small volcanic islands created by the subduction of oceanic plates under another oceanic plate.
Occur when two plates move apart
Upgrade to remove ads