Alfred Wegner was a German polar researcher, geophysicist, and meteorologist. He was known for his Continential Drift Theory.
An actively deforming region where two or more tectonic plates or fragments of the lithosphere move toward one another and collide.
A divergent boundary is a linear feature that exists between two tectonic plates that are moving away from each other.
A place where two plates slide past each other.
The Juan De Fuca Plate
The Juan De Fuca plate is a plate that is off the coast of Washington.
Formation of Cascades
All three types of boundaries had a role in the formation and eruptions of the Cascades.
Convection Currents and Tectonic Plates
Convection currents move the plates due to the circular movement of the hot rock underneath, which causes the plates to float on the currents.