Welling Formation, new name for Upper Ordovician unit in eastern Oklahoma (formerly called "Fernvale")

The name Welling is proposed for an eastern Oklahoma formation formerly called the "Fernvale Limestone." The type Fernvale is in central Tennessee where it is applied to strata younger than the Welling Formation. The Welling comprises organo-detrital limestones which are overlain by the Late Ordovician Sylvan Shale and underlain by the Middle Ordovician Fite Limestone. It is a distinctive lithostratigraphic unit readily identified throughout the surface and subsurface of eastern Oklahoma.