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The 1980 eruption of Mount St. Helens produced dacite, which has an intermediate-felsic composition.

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11y ago

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Does mauna loa have mafic or felsic magma?

Mauna Loa volcano in Hawaii typically has mafic magma, which is rich in magnesium and iron, resulting in low viscosity and flowing lava. This magma composition contributes to the shield volcano shape and frequent eruptions on Mauna Loa.


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As a shield volcano, Mauna Kea erupts mafic lava.


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