The BGS Lexicon of Named Rock Units — Result Details

Hinton St Mary Clay Member

Computer Code: HSM Preferred Map Code: HSM
Status Code: Full
Age range: Oxfordian Age (JO) — Oxfordian Age (JO)
Lithological Description: Clay, grey, commonly oolitic.
Definition of Lower Boundary: Fairly abrupt change from the oolitic shelly limestones of the Cucklington Oolite.
Definition of Upper Boundary: Fairly abrupt change to the pisolitic limestones of the Sturminster Pisolite.
Thickness: 0 - 5.5m
Geographical Limits: Across the central part of the Shaftesbury Sheet (313) - from Fifehead Street, Quintin (ST 772 102) - Marnhull (ST 783 189).
Parent Unit: Stour Formation (STOU)
Previous Name(s): Nothe Clay (-326)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Best developed around the village of Hinton St Mary, Dorset. 
Reference(s):
Wright, J K, 1981. The Corallian rocks of north Dorset. Proceedings of the Geologists' Association, Vol.92, 17-32. 
Bristow, C R, 1989. Geology of Sheets 71NE and 71SE. (Marnhull-Sturminster Newton, Dorset) Part of 1:10,000 Sheet 313 (Shaftesbury). British Geological Survey Technical Report WA/89/59. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E313