Crab Orchard Formation
Stratigraphic range: Telychian- Aeronian 440–435  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Underlies	Bisher Formation
Overlies	Brassfield Formation
Location
Region	Kentucky
Country	United States

The Crab Orchard Formation is a geologic formation in Kentucky, United States. It dates back to the Telychian to Aeronian stages of the Silurian period. ^[1]

References

Further reading

• Contributions to the Geology of Kentucky: Silurian System

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