Gneiss
Gneiss outcrops in a roadcut along the Beartooth highway near the Highway Maintenance Station close to Clay Butte. This exposure displays a good example of gneissic banding. The gneiss exposed here belongs to a igneous-metamorphic rock complex of Archean age which has been dated radiometrically at around than 2.6 billion years old. These rocks represent a time when Wyoming was a separate microcontinent called the Wyoming Craton which existed 500 million years before the North American Continent formed.
Gneiss
Gneiss outcrops in a roadcut along the Beartooth highway near the Highway Maintenance Station close to Clay Butte. This exposure displays a good example of gneissic banding. The gneiss exposed here belongs to a igneous-metamorphic rock complex of Archean age which has been dated radiometrically at around than 2.6 billion years old. These rocks represent a time when Wyoming was a separate microcontinent called the Wyoming Craton which existed 500 million years before the North American Continent formed.