Geology of North Carolina
2:34:32
Brief Overview of Black Hills Geology/Gold and the Black Hills
1:11:55
Tales Told By Trilobites
1:01:28
A Brief Geologic History of Colorado
1:24:15
The River That Flows Uphill: Geologic evolution of the upper Mississippi River valley...
19:46
Geologic Tour of the Blue Ridge Escarpment
1:13:44
Earthquake Science and Impacts of a Major Earthquake on the New Madrid Seismic Zone
1:32:19
The Geologic History of Iowa
35:29