• Science
• B1

Why Yellowstone's Earthquakes Mix Two Forces

David Shelly is a scientist with the United States Geological Survey (USGS). He explained that Yellowstone earthquakes often come from a mix of volcanic and tectonic activity. Tectonic activity comes from the slow movement and stress of large rock layers in the Earth's outer shell. Because these two processes work together, the earthquakes cannot be put into just one group.

Rewritten with AI from facts reported by USGS. Read the original for the full report.