South-west England Chalk Group Lithostratigraphy: Jarvis & Woodroof (1984) & Jarvis & Tocher (1987) - Broadstairs Member

The Broadstairs Member takes its name from a lithostratigraphical unit named by Robinson (1986) in the North Downs. It comprises very soft, smooth-textured chalk with regularly developed tabular and semitabular flints, and laterallly continuous bands of inoceramid bivalve shell fragments, mostly belonging to Platyceramus. The member is only really developed at Pinhay Cliffs [SY 312 906], where c. 13 m occur below the Palaeogene erosion surface (Jarvis & Tocher, 1987), but small patches of highly weathered chalk at Beer Head might be remnants of a once more extensive cover (Woods, ####). The base of the member is immediately above the upper surface of the Chapel Rock Hardground at the top of the St. Margaret's Member, and the top is the Palaeogene erosion surface.

Macrofossil Biozonation: M. coranguinum Zone (Jarvis & Tocher, 1987).

Correlation: see Correlation with other lithostratigraphical schemes for south-west England

see Correlation with other UK regions

References

JARVIS, I & TOCHER, B A. 1987. Field Meeting: the Cretaceous of SE Devon, 14 - 16th March, 1986. Proc. Geol. Ass., Vol. 98 (1), 51-66.

ROBINSON, N D.1986. Lithostratigraphy of the Chalk Group of the North Downs, southeast England. Proceedings of the Geologists' Association, Vol. 97, 141-170.

WOODS, M A.1999. Draft contribution to the sheet description of the Sidmouth district (Sheet 326): Cretaceous. British Geological Survey Technical Report, WH/99/28R.

See: Broadstairs Member (Robinson, 1986), St. Margaret's Member