![Volcanic rocks / Stratovolcanoes / Lahar / Eruption of Mount St. Helens / Pyroclastic flow / Dam / Avalanche / Debris / Armero tragedy / Geology / Volcanology / Volcanoes Volcanic rocks / Stratovolcanoes / Lahar / Eruption of Mount St. Helens / Pyroclastic flow / Dam / Avalanche / Debris / Armero tragedy / Geology / Volcanology / Volcanoes](https://www.pdfsearch.io/img/8e70cd2ee702c0e99762c33d79bc12c5.jpg) Date: 2013-11-06 17:00:48Volcanic rocks Stratovolcanoes Lahar Eruption of Mount St. Helens Pyroclastic flow Dam Avalanche Debris Armero tragedy Geology Volcanology Volcanoes | | Areas that could be affected by pyroclastic flows, pyroclastic surges, lava flows and ballistic projectiles in future eruptions [2]. During any single eruption, some drainages may be affected by some or all phenomena, whAdd to Reading ListSource URL: pubs.usgs.govDownload Document from Source Website File Size: 2,11 MBShare Document on Facebook
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