Every Layer of the Grand Canyon, Explained
43:36
How Geologists Discovered and Mapped a Great Seaway
19:20
Geología del Gran Cañón (¡aproximadamente 2 mil millones de años de antigüedad!) GEO GIRL
51:29
Have you ever seen TIME? Let's look through the lens of geology.
48:46
A Tour of Earth's Ancient Supercontinents
20:47
The Remarkable Restoration of Cuyahoga Valley National Park
56:47
How did the Rocky Mountains Form?
28:18
How Geologists Determine the Age of Mountains
45:52