Chalk Group Lithostratigraphy: Northern England - Hartendale Marl

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This comprises a c. 20-30 mm thick grey, silty marl, locally expanding to a c. 100 mm thick chalk and marl complex.

Macrofossil Biozonation: U. socialis Zone

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.

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