Southern Region Chalk Group Lithostratigraphy: Sussex lithostratigraphy of Mortimore (1986a) - Beeding Beds

From Earthwise
Jump to navigation Jump to search

The Beeding Beds, c. 8 m thick, are marked by the top surface of the Hope Gap Hardground at the base, and by the top surface of the upper Beeding Hardground at the top (Mortimore, 1986a). Most of the succession comprises rather soft, weakly nodular, flinty chalk, capped by two beds of hard, nodular chalk and associated hardgrounds (Beeding Hardgrounds) (Mortimore, 1986a). The Beeding Marl occurs near the base, a short distance above the Hope Gap Hardground (Mortimore, 1986a).

The fauna of the Beeding Beds is characterised by the echinoids Micraster cortestudinarium and Tylocidaris, and the inoceramid bivalve Cremnoceramus crassus (formerly schloenbachi) (Mortimore, 1986a).

Macrofossil Biozonation: middle M. cortestudinarium Zone

Correlation: see Correlation with other Southern Region Chalk Group classifications

see Correlation with other UK Chalk Group successions

References[edit]

MORTIMORE, R N.1986a. Stratigraphy of the Upper Cretaceous White Chalk of Sussex. Proceedings of the Geologists' Association, Vol. 97(2), 97-139

See: Flint, Marl, Nodular Chalk, Hardground