Geology of Virginia 2014
25:28
How & When the Appalachian Mountains Formed & The Rocks Found Here! GEO GIRL
25:30
Where Terranes Collide: The Geology of Western Canada
21:49
Early Virginia Genealogy
32:15
Explore Mysterious Rivers On The Deep Seafloor
28:08
Is this famous Appalachian valley an impact crater or an ancient volcano?
28:20
Rock Identification with Willsey: Intro to Igneous Rocks!
14:17
How the Elite rigged Society (and why it’s falling apart) | David Brooks
17:00