Plate Margins

• Earthquakes only; can be violent 
• Landform; Fautline
• Pacific and North American Plates

• one plate moves slowly and slightly into the other
• earthquakes can occur if the two plates stick
• sufficient pressure builds up
• one plate jerks, sending shockwaves to the surface
• these shockwaves cause earthquakes

• Gentle volcanic eruptions and earthquakes
• Landform- Rift Valley, Thingvellir / Shield Volcano / Mid Ocean Ridge 
• Iceland- N.American and Eurasian Plates

• two plates move away from each other 
• molten rock or magma rises to fill the gap
• forms new oceanic crust 
• newly formed magma rises to the surface to form volcanoes and a long chain of fold mountains

• Earthquakes only
• Landform- Fold Mountains
• Himalyan Fold Mountains- Indo-Australian Plate and Eurasian Plate

• two plates consisting of continental crust move together
• rocks between them are forced upwards forming fold mountains 
• this movement may also lead to earthquakes 

Oceanic & Continental

• violent volcanic eruptions
• violent earthquakes
• Landforms-Volcano, Trench, Subduction Zone
• Nazca and South American Plate
• Andes 
• Subduction Zone- Peru/Chile Trench

• Plates consisting of oceanic crust move towards plates of continental crust
• Nazca plate moves towards the South American
• Nazca plate is forced downwards to form a subduction zone
• increase in pressure triggers earthquakes

Oceanic & Oceanic

• Violent volcanic eruptions
• Violent earthquakes
• Landforms- Volcano / Island Arc / Trench / Subduction Zone
• Aleutian Islands
• N.American and Pacific Plates