Chalk Group Lithostratigraphy: Northern England - East Nook Marls

Whitham (1993) described a single East Nook Marl (=East Nook Marl 1), comprising a grey, silty/chalky marl, c. 20-30 mm thick, marking the base of the Danes Dyke Member. Subsequently, Mitchell (1994) recognised two other marls in the group (East Nook Marls 2 & 3), and showed that the South Cliff Marl of Whitham (1993), was correlative with East Nook Marl 1.

Macrofossil Biozonation: upper M. coranguinum Zone (= Upper Hagenowia rostrata Zone of Whitham, 1993)

Correlation: see Correlation with other UK Chalk Group successions

References

MITCHELL, S F. 1994. New data on the biostratigraphy of the Flamborough Chalk Formation (Santonian, Upper Cretaceous) between South Landing and Danes Dyke, North Yorkshire. Proceedings of the Yorkshire Geological Society, Vol. 50, 113-118.

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.