Chalk Group Lithostratigraphy: Northern England - Wootton Marls

These are two thin (c. 12 mm) marls bounding a c. 0.45 m thick interval of massive chalk, locally with a tabular flint (Wood & Smith, 1978). The marls mark the change from solid flints (below) to carious flints (above), but locally the lower marl is replaced by a marly plexus or a tabular flint (Wood & Smith, 1978).

Macrofossil Biozonation: S. plana Zone

Correlation: see Correlation with other UK Chalk Group successions

References

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.