Chalk Group Lithostratigraphy: Northern England - Nafferton Grange Marls

The Nafferton Grange Marls, named after Nafferton Grange Quarry [TA 049 611], are seven conspicuous, sharply defined marls, arranged into 3 groups, in a succession of mostly hard, massive-bedded chalk, with locally thinner bedded intervals (Whitham, 1993). The c. 25 m thick succession at Nafferton exposes younger chalk than that seen in coastal sections, and contains a total of 20 marls, the seven conspicuous Nafferton Grange Marls ranging from 20 mm to 50 mm in thickness, and mostly comprising compacted, hard silty, grey-brown marl (Whitham, 1993).

Macrofossil Biozonation: I. lingua Zone, D. binodosus Subzone

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.