The BGS Lexicon of Named Rock Units — Result Details

Rowe Chalk Formation

Computer Code: ROWE Preferred Map Code: ROWE
Status Code: Full
Age range: Campanian Age (KC) — Maastrichtian Age (KM)
Lithological Description: White, flint-bearing chalk with sporadic marl bands.
Definition of Lower Boundary: The base is taken at a basal flint band of a thick unit of flint-bearing chalk above the thick flint-free unit of the Flamborough Formation; the base of the formation is recognizable within downhole geophysical logs by a change in log trace characteristics.
Definition of Upper Boundary: The upper boundary is the upper limit of the Chalk Group onshore, where unconformably overlain by Quaternary deposits.
Thickness: About 80m preserved.
Geographical Limits: Present only in eastern Holderness, Yorkshire (from approximately Barmston near Bridlington, to Withernsea; see Sumbler, M G, 1999, Fig.1), where it is entirely concealed beneath thick superficial deposits.
Parent Unit: White Chalk Subgroup (WHCK)
Previous Name(s): Flamborough Formation (-4039)
Rowe Formation [Obsolete Code: Use ROWE] (-2400)
Alternative Name(s): none recorded or not applicable
Reference Section  Atwick No.1 (1972) borehole (TA15 SE7), c.37m (base of superficial deposits) to c.78m (top of Flamborough Formation) depth. Lower part of formation. 
Reference Section  Atwick No 2 (1973) borehole (TA15 SE9), c. 41 to 122 m depth. Thickest known onshore succession. 
Hopson, P M. 2005. A stratigraphical framework for the Upper Cretaceous Chalk of England and Scotland, with statements on the Chalk of Northern Ireland and the UK Offshore Sector. British Geological Survey Research Report RR/05/01 102pp. ISBN 0 852725175 
Sumbler, M G. 1996. The stratigraphy of the Chalk Group in Yorkshire, Humberside and Lincolnshire. British Geological Survey Technical Report WA/96/26C. 
Lott, G K and Knox, R W O'B. 1994. 7. Post-Triassic of the Southern North Sea. In: Knox, R W O'B and Cordey, W G (eds.) Lithostratigraphic nomenclature of the UK North Sea. British Geological Survey, Nottingham. 
Sumbler, M G. 1999. The stratigraphy of the Chalk Group in Yorkshire and Lincolnshire. British Geological Survey Technical Report WA/99/02. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: