title: Girkin Formation
text: # Girkin Formation
  
  The Girkin Formation is a geologic formation located in the Chester Escarpment of central Kentucky, USA. It comprises a level of Mammoth Cave and lies above the Ste. Genevieve Limestone and St. Louis Limestone and below the Big Clifty Sandstone in that area. The Girkin is a limestone Mississippian in age.
  
  Members of the Girkin are as follows in descending order:
  
  * Beech Creek Member
  * Elwren Member
  * Reelsville Member
  * Sample Member
  * Beaver Bend Member
  * Bethel Member
  * Paoli Member
  