Yellowstone's Largest Eruption Bakes Rock Below, Leaves Two Ash Layers, And Creates An Unconformity
High on Mount Everts, way above above Mammoth Hot Springs in Yellowstone National Park, lies an amazing outcrop that exposes the 2.1 million year old Huckleberry Ridge Tuff (the largest of Yellowstone's recent three eruptions) where it overlaps older Cretaceous sedimentary rocks.
Geology professor Shawn Willsey catches his breath and shows the exceptional geologic features created as the ash from this eruption baked the underlying soil and rock, turning it red. While creating an exceptional unconformity.