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What type of magma is in Mount Shasta?

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USGS image Modified from: Dwight R. Crandell, 1989 Gigantic Debris Avalanche of Pleistocene Age from Ancestral Mount Shasta Volcano, California, and Debris-Avalanche Hazard Zonation: U.S. read more

Mount Shasta's magma is composed of basalts and basaltic andesite. These two types of magma are very runny, forming large shield cones and steep, loose tephra cones. The basaltic andesites at Mount Shasta are unusually rich in magnesium. read more

What type of magma is in Mount Shasta MAGMA is generally understood to refer to molten or at least semi-fluid material within the crust which may either solidify in place or erupt onto the earth’s surface in the form of lava, ash, ignimbrite, rock or any number of other descriptive terms. read more

Mt Shasta is a High-Moderate Temp volcano. The Lumarians still live in there though. Guess they can take the heat. read more

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