John Seach, Volcano Live

Silicic Magma - John Seach

Silicic magma results in the formation of granite as an intrusive rock.
Silicic magma erupts at the surface to produce fine grained glassy rocks (dacites and rhyolites)
which easily release volatiles such as water. These volcanoes have been responsible for the earth's greatest eruptions.

Examples of large explosive silicic magma eruptions.
Mt St Helens (USA), Crater Lake (USA), Long Valley (USA), Yellowstone (USA), Santorini (Greece), Toba (Indonesia), Krakatau (Indonesia), Tambora (Indonesia), Taupo (New Zealand).

Silicic magma
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