Folding Rocks; From the Miniscule to Giant Mountains
28:18
How Geologists Determine the Age of Mountains
21:46
Learn to Identify Rivers in the Rock Record with a Geologist
20:46
Modern Life Depends on This Extinct Rock | Banded Iron Formations
25:28
How & When the Appalachian Mountains Formed & The Rocks Found Here! GEO GIRL
19:37
Comment Google Earth m'a conduit à un incroyable secret caché sous un rocher !
20:53
Continents Collide: The Appalachians and the Himalayas
26:01
Surprising Implications of a Cave Discovery
10:57