The BGS Lexicon of Named Rock Units — Result Details

Wattonensis Beds Member

Computer Code: WAB Preferred Map Code: WaB
Status Code: Full
Age range: Bathonian Age (JN) — Bathonian Age (JN)
Lithological Description: Pale olive-grey argillaceous shelly limestones interbedded with medium olive-grey, bioturbated, shell-detrital silty mudstones. Distinctive fauna includes Rhynchonelloidella wattonensis.
Definition of Lower Boundary: Base defined by an upward increase in shell-detritus in calcareous mudstone.
Definition of Upper Boundary: The top of the uppermost argillaceous limestone marked by a decrease in shell-detritus.
Thickness: To 3m
Geographical Limits: South of Mere Fault to Dorset coast (at crop).
Parent Unit: Frome Clay Formation (FRC)
Previous Name(s): Brachiopod Beds (-3750)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Purse Caundle Borehole ST71NW/7. 
Reference Section  Stream gully, partial section. Stream section northwest of Stowell (locality T, Figure 19, Bristow, C R, et al, 1995). 
Reference Section  Winterborne Kingston Borehole SY89NE. 
Reference(s):
Barton C M, 1989. Geology of the Milborne Port district (Somerset and Dorset) 1:10 000 Sheet ST61NE. Technical Report of the British Geological Survey, Onshore Geology Series, WA/89/60 
Barton, C M, Ivimey-Cook, H C, Lott, G K, and Taylor, R T. 1993. The Purse Caundle Borehole, Dorset: stratigraphy and sedimentology of the Inferior Oolite and Fuller's Earth in the Sherborne area of the Wessex Basin. British Geological Survey Research Report, SA/92/01. 
Penn, I E, 1982. Middle Jurassic stratigraphy and correlation of the Winterborne Kingston Borehole, Dorset. 53-76 in Rhys, G H, Lott, G K and Calver, M A (editors), The Winterborne Kingston Borehole, Dorset, England. Report of the Institute of Geological Sciences, No.81/3. 
Kellaway, G A and Wilson, V. 1941. An outline of the geology of Yeovil, Sherborne and Sparkford Vale. Proceedings of the Geologists' Association, Vol.52, 131-174. 
Torrens, H S in Cope, J C W, Duff, K L, Parsons, C F, et al, 1980. A correlation of Jurassic rocks in the British Isles. Part Two: Middle and Upper Jurassic. Special Report of the Geological Society of London, No.15, 109pp. 
Bristow, C R, Barton, C M, Freshney, E C, Wood, C J, Evans, D J, Cox, B M, Ivimey-Cook, H C, and Taylor, R T. 1995. Geology of the country around Shaftesbury. Memoir of the British Geological Survey, Sheet 313 (England and Wales). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E281 E341 E342 E343 E313 E312