This cross section by John Bezy, drawing on the geologic mapping of George Billingsley and his colleagues at the US Geological Survey, illustrates the make up of the Earth's crust on the Colorado Plateau near Flagstaff, Arizona. This illustration is one of dozens in Bezy's 56-page guide to the geology of the Flagstaff area. https://library.azgs.arizona.edu/item/DTES-1552427824089-899
Rock units displayed in the cross section formed during the Proterozoic, Paleozoic, Mesozoic, Pleistocene and Holocene.
Photo Date: circa 2004