Chalk Group Lithostratigraphy: East Anglia - Top Rock

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The Top Rock of East Anglia matches descriptions of its habit and occurrence in the adjacent Chilterns region. In the Bury St. Edmunds district, it is a 0.4 m thick bed of intensely indurated limestone, with a convolute, glauconitised hardground at its top, strewn with glauconitised and phosphatised pebbles, with a fauna that is superficially similar to the 'Reussianum Fauna' of the Chalk Rock (Bristow, 1990).

Macrofossil Biozonation: upper S. plana Zone & M. cortestudinarium Zone

Correlation: see Correlation with other UK Chalk Group successions

References

BRISTOW C R. 1990. Geology of the country around Bury St. Edmunds. Memoir of the British Geological Survey.

See: Top Rock (Chilterns Region), Reussianum Fauna

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