Chalk Group Lithostratigraphy: East Anglia - Pilgrim's Walk Marl

This marl was identified and named by Ward et al. (1968) in the Middle Chalk of the Thetford district where it is 30-50mm thick, and it has also been correlated in borehole resistivity logs across East Anglia (Murray, 1986). It equates with Barton Marl 2 of the northern England Chalk Group succession (Gaunt et al., 1992; Mortimore & Wood, 1986), and in the Trunch Borehole [TG 2933 3455] in north Norfolk is represented by a 5mm marl at a depth of 482.71 m (Arthurton et al.,1994).

Macrofossil Biozonation: T. lata Zone

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.

MORTIMORE, R N & WOOD, C J.1986. The distribution of flint in the English Chalk, with particular reference to the 'Brandon Flint Series' and the high Turonian flint maximum. In SIEVEKING, G de C & HART, M B. The scientific study of flint and chert. Cambridge University Press, Cambridge.

WARD, W H, BURLAND, J B & GALLOIS, R W. 1968. Geotechnical assessment of a site at Mundford, Norfolk, for a large Proton Accelerator. Géotechnique, Vol. 18, 399-431.

See: Barton Marl 2