Geologic History
The Powder River Basin contains a section of Phanerozoic rocks up to 17,000 feet (5,200 m) thick, from Cambrian to Holocene.
Read more about this topic: Powder River Basin
Famous quotes containing the word history:
“I believe my ardour for invention springs from his loins. I can’t say that the brassiere will ever take as great a place in history as the steamboat, but I did invent it.”
—Caresse Crosby (1892–1970)