Chalk Group Lithostratigraphy: Northern England - High Stacks Marl
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A c. 20 mm thick grey, silty marl, c. 3.5 m above the top of the High Stacks Flint, and typically seen as a deep groove in coastal sections (Whitham, 1993).
Macrofossil Biozonation: upper M. coranguinum Zone (= Upper Hagenowia rostrata Zone of Whitham, 1993)
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.