1:20:43

Evolution of the Appalachian Mountains

56:47

How did the Rocky Mountains Form?

53:29

Lunch Break Science: Gold in Virginia

28:20

Rock Identification with Willsey: Intro to Igneous Rocks!

36:55

Appalachian Geology: Surprising Implications

38:43

Investigate mysterious features with a geologist

20:53

Continents Collide: The Appalachians and the Himalayas

25:30

Where Terranes Collide: The Geology of Western Canada