• Two

    John Day Fossil Beds

    National Monument Oregon

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Sheep Rock

Sheep Rock

Sheep Rock

This unit features:

 
Image of the Blue Basin trail area.

View from the Blue Basin Overlook

Multiple exposures of the Turtle Cove strata can be seen at the Sheep Rock Unit. This blue-green rock layer represents millions of years of volcanic ash accumulation. Surprisingly enough, the green tint is not due to copper, but rather a complex blending of the elements hydrogen, oxygen, sodium, magnesium, aluminum, silicon, potassium, calcium, iron, strontium, and barium.

Did You Know?

Image of  fossilized amynodont skulls.

The best place to see the monument's fossils is inside the Thomas Condon Paleontology Center at the Sheep Rock Unit.