Convergent boundary overview

Where are convergent boundaries located? (Continental v Continental)

Himalayas

Where are convergent boundaries located? (Oceanic v Continental)

Andes, South America

Where are convergent boundaries located? (Oceanic v Oceanic)

Montserrat or Caribbean

What are convergent boundaries plate movements?

Collision - plates moving towards each other

What is the lava/magma type of convergent boundaries?

Andesite

How does the magma form?

From subducting oceanic plate

Andesite characteristics

Thick, flows like toffee, gas is not released and it is explosive

What landforms and relief features do convergent boundaries cause?

Mountain ranges, trenches, island arcs and volcanoes (strato/composite)

What are volcanic hazards caused by convergent boundaries?

Pyroclastic flow, ash clouds, lahars and landslides

What are earthquake hazards caused by convergent boundaries?

Lots of high magnitude earthquakes

What are convergent boundary earthquakes caused by?

Subducting plate (shallow or deep earthquakes)

What are island arcs?

Chain volcanic islands found above subduction zone of oceanic/oceanic plates

What is the Benioff zone?

The depth at which subducting causes melting of plate

What is orogeny?

A mountain building event