The August Town Formation comprises sandy limestones and calcareous sandstones with sporadic clays or conglomerates (James-Williamson, S and Mitchell S.F 2012). The age is Mid Miocene to Pliocene. It was first described by Matley (1951). Matley (1951) describes the August Town Formation as fossiliferous sands, gravels and calcareous marls.
The August Town Formation is a part of the Coastal Group of Jamaica.