This facies association is best interpreted as fluvial-bar deposits. FA B consists of Skolithos burrowed, thin-bedded, normally graded arenites. FA B is analogous to nearshore deposits.
Graded beds reflect storm reworking of the shoreface.
Skolithos traces record opportunistic behavior of the organism. Sedimentary structures in facies association C and D are analogous to marine deposits. Examination of the Hardyston Formation permits the precise demarcation of the fluvial-marine transition that is not often possible in similar strata.