Green River Formation

Green River formation

Utah Geological Survey photo


This layer does not occur in Canyonlands but may be seen while rafting the Green River through Desolation Canyon, driving Nine Mile Canyon near Wellington, Utah, or exploring elsewhere in the southeast Uinta Basin.

Early Tertiary Period (1.6 to 66 million years ago)

Depositional Environment:

Continuous grey/brown slopes of shale

Uinta Basin in north-central Utah

The Green River Formation contains what might be the largest deposits of oil shale in the world.

Rock Strata
Layer Above: Southeast Utah Mountains
Current Layer: Green River Formation
Layer Below: Wasatch/Claron Formation

Did You Know?