Chalk Group Lithostratigraphy: Northern England - Maidlands Upper Marls

A marl pair separated by c. 2.6 m of chalk, the lower one comprising a 20-40 mm thick grey, silty and locally twinning marl, and the upper comprising a 40-50 mm thick chalky and gradational marl (Whitham, 1993).

Macrofossil Biozonation: M. testudinarius Zone

Correlation: see Correlation with other UK Chalk Group successions

References

WHITHAM, F.1993. The stratigraphy of the Upper Cretaceous Flamborough Chalk Formation north of the Humber, north-east England. Proceedings of the Yorkshire Geological Society, Vol. 49(3), 235-258.