Structural map of the onset of the Yellowstone-Snake River Plain hotspot track
By Yellowstone Volcano Observatory
2020 (approx.)
Detailed Description
Beginning of Yellowstone-Snake River Plain hotspot track and resulting northeasterly path of the ancestral Missouri River starting about 16.5 million years ago. Modified from Hyndman D.W., and Thomas, R.C., 2020, Roadside Geology of Montana, Mountain Press Publishing, 464 p.
Sources/Usage
Public Domain.