The Cumnock Formation, on the other hand, represents a sequence of darker lacustrine (lake) or paludal (swampy/marshy) sediments deposited in a tropical climate.
[1] These primarily include shales and coal, with some thin layers of coarser sediment such as siltstone and sandstone.
It has also been compared to the Stockton and Lockatong formations of the Newark Basin in the northeastern United States.
[4] The Cumnock Formation is probably early Norian in age based on comparisons to similar strata in the eastern United States, as well as early sections of the Chinle Formation further west.
This article about a specific stratigraphic formation in North Carolina is a stub.