Basic intrusive related to Bearpaw Mountains, Montana
Basic intrusive related to Bearpaw Mountains, Montana
Open Glory hole in Porphyry, gold mine, Ruby Gulch
Open Glory hole in Porphyry, gold mine, Ruby Gulch
Entrance to Mission Canyon, Little Rocky Mountains
Entrance to Mission Canyon, Little Rocky Mountains
Mission Canyon, Little Rocky Mountains
Mission Canyon, Little Rocky Mountains
Lodgepole Canyon, Little Rocky Mountains
Lodgepole Canyon, Little Rocky Mountains
Bitumen jointed masonry of temple of Ur of the Chaldees
Bitumen jointed masonry of temple of Ur of the Chaldees
Ironstone concretions in Eagle sandstone
Ironstone concretions in Eagle sandstone
Kepperlites sp. Rierdon formation. Morrison Dome.
Kepperlites sp. Rierdon formation. Morrison Dome.
Large boulder in finer gravel. Flaxville formation
Large boulder in finer gravel. Flaxville formation
Badlands. Fort Union formation (Paleocene)
Badlands. Fort Union formation (Paleocene)
Badlands. Fort Union formation. Paleocene
Badlands. Fort Union formation. Paleocene
Badlands. Fort Union formation. Paleocene
Badlands. Fort Union formation. Paleocene
Little Missouri River in Badlands, Theodore Roosevelt Park
Little Missouri River in Badlands, Theodore Roosevelt Park
Missouri River near Wolf Point, Montana
Missouri River near Wolf Point, Montana
Clastic dike in Flaxville formation
Clastic dike in Flaxville formation
