Rand Canyon | Landmarks Shortcuts | Global Voyage | Ep5
Episode 05
Grand Canyon
The Grand Canyon In Arizona Is A Geologic Museum Of Epic Proportions. In One Panoramic Sweep You Can See Nearly Half Of The Earth'S 4.6-Billion-Year History. Erosion Has Exposed Rock Strata Ranging From The 1.7-Billion-Year-Old Vishnu Schist Of The Inner Gorge, To The Pale Kaibab Limestone Deposited 250 Million Years Ago. The Grand Canyon Began To Appear About 70 Million Years Ago. It Took Another 5 To 6 Million Years For The Wind, Rain, Ice, Gravity And Sediment-Laden Colorado To Widen The Canyon To Its Present 10-Mile Average