" How much paint did it take to make the cliffs purple?" An actual question asked by a tourist visiting Durango. Geologically, the Purple Cliffs are known as the McDermott Formation. They are the stream and mudflow deposits that washed off the La Plata Mountains as they started to uplift during the late Mesozoic Era (66 Milion years ago).
It looks like it was really windy.
ReplyDelete