Pyroclastic Flows
Pyroclastic Flows
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Volcano Hazards in the Cascade Range
The U.S. Geological Survey's Cascades Volcano Observatory strives to serve the national interest by helping people to live knowledgeably and safely with volcanoes in WA, OR, and ID.
Lava Flows, Domes, and Pyroclastic Flows Build Cascade Volcanoes
Cascade Range stratovolcanoes are built as repeated eruptions accumulate hundreds of overlapping lava flows, lava domes, and layers of rock rubble from pyroclastic flows.