Image: Yellowstone Major Calderas Map

Description: Depicted are four major calderas within the Yellowstone volcanic system, numbered in order of eruption: Island Park, Henry's Fork, Yellowstone, and West Thumb. Each caldera is additionally labeled with its associated ignimbrite/tuff deposit and high-precision U-Pb dates for each deposit from recent scientific literature. This is an improvement on the previous version of this diagram located here. The previous version was itself an adaptation of a diagram appearing in the 2021 National Park Service publication "Yellowstone Resources and Issues Handbook", itself adapted from the original diagram created in 2000 by Smith & Siegel for their book, "Windows Into the Earth: The Geologic Story of Yellowstone and Grand Teton National Parks".
Usage Terms: Public domain