Clinker capped Tongue River Formation near Lame Deer, Montana
By Wyoming-Montana Water Science Center
2006 (approx.)
Detailed Description
Clinker is formed when rock units that overlie exposed burning coal seams are baked and fused. The red and brown clinker is more resistant to erosion than non-baked adjacent Tongue River Formation sandstones and forms caps of many plateaus and buttes. Photo taken north of Lame Deer, Montana.
Sources/Usage
Public Domain.