Mount St. Helens and Volcano Plumbing Systems (GeoShort)

PlanetGeo: The Geology Podcast

In this GeoShort, we discuss Mount St. Helens, one of Chris' favorite volcanoes and probably the reason he got into geoscience!
This is the Scientific American article, written by Steve Olson, about Mount St. Helens that serves as the backbone for much of our discussion.
Mount St. Helens is a famous volcano in Washington State that erupted in 1980. Scientists have been studying Mount St. Helens for a long time, and it is one location where magma plumbing systems are studied to try to understand how magma reaches the surface in a volcano.
Magma plumbing systems are really complicated but they control the composition of the lava as well as how explosive the volcanic eruptions are! So, this is important to understand.
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