Darby Formation

The Darby Formation is a Devonian geological formation. It consists mostly of dolomites and limestones that commonly contain discontinuous layers of calcareous shale or sandstone.

This formation underlies the Madison Formation in the Fossil Mountain in Wyoming. It is also visible at the Bighorn Scenic Byway.[1]

References

  1. ^ "National Geologic Map Database". US Geological Survey.
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