Chalk Group Lithostratigraphy: Northern England - Lower Orbirhynchia Bed

A thin, laterally persistent, but ill-defined bed containing an acme of the brachiopod Orbirhynchia mantelliana, correlating with the lowest of the three O. mantelliana bands recognised in the Lower Chalk at Folkestone (eg. Gale, 1989), and recorded locally below the Totternhoe Stone in the King's Lynn district of East Anglia (Gaunt et al., 1992; Gallois, 1994).

Macrofossil Biozonation: M. dixoni Zone

Correlation: see Correlation with other UK Chalk Group successions

References

GALE, A S. 1989. Field meeting at Folkestone Warren, 29th November, 1987. Proceedings of the Geologists' Association, Vol. 100 (1), 73-82.

GALLOIS, R W.1994. Geology of the country around King's Lynn and The Wash. 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.

See: Lower O. mantelliana Band (Folkestone), Lower O. mantelliana Band (East Anglia)