Geologic units in Searcy county, Arkansas

Additional scientific data in this geographic area

Boone Formation (Early Mississippian- Meramecian to Osagean) at surface, covers 35 % of this area

Boone Formation

Bloyd Shale, and Prairie Grove Member of the Hale Formation (Middle Pennsylvanian- Morrowan) at surface, covers 19 % of this area

Bloyd Shale, and Prairie Grove Member of the Hale Formation

Pitkin Limestone, Fayetteville Shale (including the Wedington Sandstone member), and Batesville Sandstone (including the Hindsville Limestone Member) (Late Mississippian- Chesterian) at surface, covers 18 % of this area

Pitkin Limestone, Fayetteville Shale (including the Wedington Sandstone member), and Batesville Sandstone (including the Hindsville Limestone Member)

Cane Hill Member of Hale Formation (Early Pennsylvanian- Morrowan) at surface, covers 13 % of this area

Cane Hill Member of Hale Formation

Cason Shale and Fernvale Limestone (Upper Ordovician) and Kimmswick Limestone, Plattin Limestone, and Joachim Dolomite (Middle Ordovician) (Late Ordovician to Middle Ordovician) at surface, covers 6 % of this area

Cason Shale and Fernvale Limestone (Upper Ordovician) and Kimmswick Limestone, Plattin Limestone, and Joachim Dolomite (Middle Ordovician)

St. Peter Sanstone and Everton Formation (Middle Ordovician) (Middle Ordovician) at surface, covers 5 % of this area

St. Peter Sanstone and Everton Formation (Middle Ordovician)

Ruddell Shale (Late Mississippian- Chesterian) at surface, covers 2 % of this area

Ruddell Shale

Lafferty, St. Clair and Brassfield Limestones (Late Silurian to Early Silurian) at surface, covers 0.5 % of this area

Lafferty, St. Clair and Brassfield Limestones

Atoka Formation, undivided (Middle Pennsylvanian- Atokan) at surface, covers 0.2 % of this area

Atoka Formation, undivided

Powell Dolomite (Early Ordovician) at surface, covers < 0.1 % of this area

Powell Dolomite