Friction between the two plates causes the Earth's crust to 'melt' 15-30 kilometres below the surface and to form large magma chambers deep underground.
(the Earth's crust; to to form; large magma chambers; T:deep underground) (Friction between the two plates; causes; the Earth's crust to 'melt' 15-30 kilometres below the surface and to form large magma chambers deep underground) Context(Friction between the two plates causes,List([0, 38))):(the Earth's crust; to melt; 15-30 kilometres below the surface)
Friction between the two plates causes,List([0, 38))
the Earth's crust Friction between the two plates the Earth's crust
to to form causes to melt
large magma chambers T:deep underground
the Earth's crust to 'melt' 15-30 kilometres below the surface and to form large magma chambers deep underground
15-30 kilometres below the surface