Buried hills and hollows: the Ozarks' Precambrian landscape
25:14
Missing time: The Great Unconformity in the Ozarks
23:29
Exploring the Precambrian igneous geology of the Ozarks' scenic St. Francois Mountains
20:46
Modern Life Depends on This Extinct Rock | Banded Iron Formations
24:22
Why does Appalachia have so many mountains with coal under them?
11:35
Why Do Utah's Uinta Mountains Run East-West?
7:13
Michigan Geology | The Michigan Basin
19:46
Geologic Tour of the Blue Ridge Escarpment
24:16