Lafferty Limestone
The Lafferty Limestone is a Middle to Late Silurian geologic formation in the Ozark Plateaus of Arkansas. The name was introduced in 1921 by Hugh Dinsmore Miser in his study of Arkansas, replacing part of the upper St. Clair Limestone. Miser designated a type locality at Tate Spring, located 1.25 miles north of the site of the old Penters Bluff railroad station in Izard County, Arkansas, however, he did not assign a stratotype. As of 2017, a reference section has not been designated for this unit.
| Lafferty Limestone | |
|---|---|
| Stratigraphic range: Silurian | |
| Type | Formation |
| Unit of | none |
| Underlies | Penters Chert |
| Overlies | St. Clair Limestone |
| Thickness | up to 97.5 feet |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region | Arkansas |
| Country | United States |
| Type section | |
| Named for | West Lafferty Creek, Izard County, Arkansas |
| Named by | Hugh Dinsmore Miser |
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