Grand Canyon's Iconic Great Unconformity: 1.3 billion years of geologic time!
15:12
Fantastically Folded Rocks and the Beautiful Butte Fault, A Major Structure in the Grand Canyon
45:53
How Snowball Earth Leveled Mountains and Created the Great Unconformity
24:00
What I Found in the Grand Canyon is Baffling
15:00
We got robbed on the Grand Canyon Railway
13:20
San Rafael Swell Utah and Floating the Little Grand Canyon on the San Rafael River
15:20
La couche manquante du Grand Canyon se trouve à Sedona ? Explication de la géologie
11:31
When a Billion Years Disappeared
26:01