Chalk Group Lithostratigraphy: Northern England - Barrow Flints

These comprise two giant flints, each up to c. 0.3 m thick, associated with nodular chalk and separated by laminate chalk (Gaunt et al., 1992). They are variably developed, sometimes having many inclusions of chalk, or locally formed of fused overlapping lenticular flints, and locally associated with the bivalve Cremnoceramus deformis (Gaunt et al., 1992). The Barrow Flints and associated nodular chalks probably equate with the giant Stroud Flints and associated hardgrounds and Cremnoceramus acmes in the middle M. cortestudinarium Zone of the North Downs succession detailed by Robinson (1986), and might also be traceable into Germany (Gaunt et al., 1992).

Macrofossil Biozonation: M. cortestudinarium Zone

Correlation: see Correlation with other UK Chalk Group successions

References

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.

See: Stroud Flints (North Downs)