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What is a low-silica magma?

Updated: 8/10/2023
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13y ago

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A magma containing not much silica (= SiO2). For example: a basaltic magma.

These magma's have a low viscosity since the lower the SiO2-content, the lower the viscosity; and hence flow easily (↔ a felsic magma).

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13y ago
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13y ago

Silicic magma is term used to describe magma with a high silica content. The higher silica content makes the magma more viscous and traps gases. Volcanoes with silicic magma tend to have much more violent eruptions. Think Mt. St. Helens (silicic) vs. Mt. Kilauea (Basaltic).

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9y ago

Silicate magma is magma with high levels of silica in it. Silica is found in the Earth's crust and often mixes with magma.

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Q: What is a low-silica magma?
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