Destructive Boundary Plates
Nazca Plate subducting under the South American Plate (The Andes)
Tectonic activity at Destructive
* Violent Earthquakes
Constructive Boundary Plates
North American Plate and Eurasian Plate (Mid Atlantic Ridge)
Tectonic activity at Constructive
* Gentle Earthquakes
Conservative Boundary Plates
North American Plate and Pacific Plate (San Andreas Fault)
Tectonic activity at Conservative
* Violent Earthquakes
Collision Boundary Plates
Indo-Australian and Eurasian (The Himalayas)
Tectonic activity as Collision
* Violent Earthquakes