Chalk Group Lithostratigraphy: Northern England - Kiplingcotes Marls

Three marls, each about 30 mm thick, occupying a c. 2 m interval (Wood & Smith, 1978), and possibly equating with the Navigation Marls of the Lewes Nodular Chalk Member in southern England (Gaunt et al., 1992). Locally, Kiplingcotes Marl 3 rests on indurated, nodular, spongiferous chalk, analagous to the Navigation Hardground of the Lewes Nodular Chalk Member in southern England (Gaunt et al., 1992). The upward appearance in the succession of the bivalves Cremnoceramus and Didymotis between Kiplingcotes Marls 1 and 2 (Didymotis probably being restricted to this horizon) is a significant faunal change, marking the base of the Coniacian (Gaunt et al., 1992).

Macrofossil Biozonation: topmost S. plana Zone & basal M. cortestudinarium Zone

Correlation: see Correlation with other UK Chalk Group successions

References

GAUNT, G D, FLETCHER, T P & WOOD, C J. 1992. Geology of the country around Kingston-upon-Hull and Brigg. Memoir of the British Geological Survey.

WOOD C J & SMITH, E G.1978. Lithostratigraphical classification of the Chalk in North Yorkshire, Humberside and Lincolnshire. Proceedings of the Yorkshire Geological Society, Vol. 42(2), 263-287.

See: Navigation Marls, Navigation Hardground, Lewes Nodular Chalk, Coniacian