Cardium Formation 1. 'Cardium, a turbidity current deposit' (Beach, 1955): a brief history of ideas ( sandstones, Ricinus- Caroline-Garrington).

Sedimentary features of the Cardium Formation are best interpreted as formed by turbidity currents, although storm rip currents and wind-forced currents are also briefly discussed. In most outcrops and many cores, the only preserved sedimentary structure is hummocky cross stratification, believed to be formed by storm waves which, it is suggested, have modified the deposits of the turbidity currents. The balance of evidence, however, suggests that F.K.Beach (1955) was largely correct: the Cardium sandstones are turbidity current deposits (largely storm-modified), at least in the Ricinus-Caroline-Garrington area.-from Author