Southern Region Chalk Group Lithostratigraphy: Sussex lithostratigraphy of Mortimore (1986a) - Seaford Chalk Member
The Seaford Chalk Member, c. 65 m thick, is marked by the upper of the two Shoreham Marls at the base, and the lowest of the Buckle Marls at the top (Mortimore, 1986a). The member comprises soft, pure white, regularly flinty chalk, with marl seams in the lower part, and locally conspicuous beds of inoceramid bivalve shell fragments (Mortimore, 1986a). Mortimore (1986a) subdivided the Seaford Chalk as follows:
|Seaford Chalk||Haven Brow|
Macrofossil Biozonation: M. coranguinum Zone
Correlation: see Correlation with other Southern Region Chalk Group classifications
see Correlation with other UK Chalk Group successions
MORTIMORE, R N.1986a. Stratigraphy of the Upper Cretaceous White Chalk of Sussex. Proceedings of the Geologists' Association, Vol. 97(2), 97-139.
See: marl, flint, Shoreham Marls