Chalk Group Lithostratigraphy: Northern England - Barton Marls

The Barton Marls comprise four marl seams (10-20 mm thick) in an interval of c. 5 m at Welton Wold Quarry [SE 970 282] (Whitham, 1991). Gaunt et al. (1992, p. 90) recorded abundant, closely spaced, large burrow-form flints, with pronounced vertical development, between Barton Marls 1 and 2, their frequency in this interval giving the chalk a rubbly appearance. However on the accompanying diagram (Gaunt et al., 1992, Fig. 33), the flints are shown between Barton Marls 2 and 3 (and also between Barton Marls 3 and 4). Since Wood & Smith (1978) and Whitham (1991) only recorded flints between Barton Marls 2 and 3, the latter is assumed to be the correct horizon of the flints described by Gaunt et al. (1992). Barton Marls 1 and 2 equate with the Lower Marl and Pilgrims Walk Marl respectively of the East Anglian Chalk Group succession (Arthurton et al., 1994).

Macrofossil Biozonation: T. lata Zone

Correlation: see Correlation with other UK Chalk Group successions

References

ARTHURTON, R S, BOOTH, S J, MORIGI, A N, ABBOTT, M A W & WOOD, C J. 1994. Geology of the country around Great Yarmouth. Memoir of the British Geological Survey.

GAUNT, G D, FLETCHER, T P & WOOD, C J. 1992. Geology of the country around Kingston-upon-Hull and Brigg. Memoir of the British Geological Survey.

WHITHAM, F.1991. The stratigraphy of the Upper Cretaceous Ferriby, Welton and Burnham formations north of the Humber, north-east England. Proceedings of the Yorkshire Geological Society, Vol. 48(3), 227-255.

See: flint, marl