Rock Identification with Willsey: BASALT and its many varieties
18:14
Rock Identification with Willsey: Intrusive Igneous Rocks (granite, granodiorite, diorite, gabbro)
28:20
Rock Identification with Willsey: Intro to Igneous Rocks!
39:10
Explore Numerous Layers of Petrified Trees: Yellowstone National Park
18:23
Rock Identification with Willsey: Volcanic Rocks (andesite, dacite, rhyolite)
14:48
Rock Identification
9:54
GEODES! What they are, how they form, and more with geology professor, Shawn Willsey
27:59
Rock Identification with Willsey: Sandstone, Mudstone, and Shale
1:37:14