Fig. 47 Ocean-ocean subduction zone

2. Oceanic plate subduction beneath a continent – involving island-arc collision, this process helped produce the Andes.

Fig. 48 Ocean-continent boundary

3. Double continent collision – the way in which the Alps and Himalayas formed.

Fig. 49 Continent-continent collision

Describe the mountain building process, using the following information and the diagrams in R.P 8.2.7, 8.2.8, 8.2.9