USGS examine new rock samples from new growth on Mount St. Helens
Detailed Description
USGS scientists examine new rock samples from the new growth on Mount St. Helens' dome.
Sources/Usage
Public Domain.
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Related Content
Analysis of rocks erupted at Mount St. Helens - Petrologic Monitoring
The chemical and physical characteristics of volcanic rocks can be studied during times of continuous eruption to help scientists better understand changes occurring within the volcano. This is called petrologic monitoring and is best used when combined with real-time and near-real-time data (such as seismic, deformation, and gas).