| 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 3 m |
| Geographical Limits: |
South of Mere Fault to Dorset coast (at crop). |
| Parent Unit: |
Frome Clay Formation (FRC)
|
| Previous Name(s): |
Brachiopod Beds [Obsolete Name and Code: Use WAB]
(-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, et al., 1995). |
| Reference Section |
Winterborne Kingston Borehole SY89NE. |
| Reference(s): |
| Barron, A J M, Lott, G K, and Riding, J B. 2012. Stratigraphical framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf. British Geological Survey Research Report RR/11/06. |
| 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. |
| 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). |
| 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 |
| 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. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E313
E312
E281
E341
E342
E343
|
