Skip to main content
U.S. flag

An official website of the United States government

Volcanic rocks in SE Idaho that are related to the Yellowstone hotspot

By Yellowstone Volcano Observatory
Map of southeastern Idaho showing volcanic rocks related to the Yellowstone hotspot.
Thumbnail Medium Original

Detailed Description

Map of southeastern Idaho showing volcanic rocks related to the Yellowstone hotspot. Basalt is shown in red and rhyolite in yellow. Blue circles indicate the location of past Yellowstone calderas; caldera names and approximate ages are shown (Ma = million years old).

Sources/Usage

Public Domain.