Hydrothermal alteration at Grand Canyon of the Yellowstone
![hydrothermal alteration at the Grand Canyon of the Yellowstone](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/hydrothermal%20alt.jpg?itok=TymA2iQn)
Detailed Description
Closeup of a wall of the Grand Canyon of the Yellowstone showing red, orange, and yellow mineral alternation, as well as white veins of silica, in the subsurface alteration zone of a former thermal basin.
Sources/Usage
Public Domain.