Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
Igneous and Metamorphic Rocks
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<strong>Igneous</strong> <strong>Rocks</strong> <strong>and</strong> Plate Tectonics<br />
• Convergent plate boundaries - the<br />
subduction of oceanic crust produces p ppartial<br />
melting of the hydrated basalt. This<br />
produces p intermediate ( (<strong>and</strong>esitic) ) magmas g<br />
which rise to form mountains (e.g. Andes).<br />
These magmas g can in turn melt continental<br />
crust producing granitic magmas.