ANSWER: Silicic Volcanism
Explanation:
- On Earth, tridymite is formed at high temperatures in an explosive process called silicic volcanism.
- Mount St Helens, the active volcano in Washington State, and the Satsuma-Iwojima volcano in Japan are examples of such volcanoes.
- Silicic Volcanism is characterized by the eruption of magma that is rich in lighter elements such as silicon, oxygen, aluminum, sodium, and potassium.
- Silicic volcanoes are associated with the melting of continental crust and often have explosive eruptions.
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