Difference in mapped rock units for Mount Everts, Yellowstone National Park

Simplified geologic maps showing the difference in mapped rock units from the current, large-scale geologic maps dividing Mount Everts and that join along the boundary between Montana and Wyoming. Geologists working on this project spent most of their time gathering data to update the northern (Montana) portion of the Mount Everts map, which currently is mapped as “Archean Schist and Hornfels” but was found to be sedimentary rock.