Yellowstone map with rhyolite eruptions highlighted
Detailed Description
Map of Yellowstone National Park adapted from Christiansen and others (2007). The pink regions are rhyolite flows erupted within Yellowstone caldera; these flows contain 5% to 15% crystals by volume. The purple region is the Obsidian Cliff flow, which contains close to 0% crystals.
Sources/Usage
Public Domain.