| Computer Code: |
AGP |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Ludlow Epoch (SU)
— Ludlow Epoch (SU) |
| Lithological Description: |
Grey nodular limestones with siltstone bands in the lower part passing upwards into massive blue hearted crystalline limestones passing into grey nodular limestones. The middle is very fossiliferous. |
| Definition of Lower Boundary: |
Drawn at the base of the Aymestry Group where nodular limestone conformably rests upon flaggy calcareous siltstones with fine-grained limestone nodules of the Lower Ludlow Shales. |
| Definition of Upper Boundary: |
Drawn at the conformable upward passage of the Aymestry Group where nodular limestones pass into olive green and buff flaggy siltstones of the Upper Ludlow Shales. |
| Thickness: |
Max thickness 70 metres approx. |
| Geographical Limits: |
The south Shropshire area including Aymestry, Herefordshire. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
From the southern edge of the Church Stretton district at Saddle Hill about 1.5kms east of Clungunford, to the Northern limit near Henmoor Hill. |
| Reference(s): |
| Elles, G L, and Slater, I L. 1906. The highest Silurian rocks of the Ludlow district. Quarterly Journal of the Geological Society of London, 61, 195-221. |
| Cocks, L R M. 1989. The geology of South Shropshire. Proceedings of the Geologists' Association, Vol. 100 (4), 505-519. |
| Watts, W W, 1925. The Geology of south Shropshire. Proceedings of the Geologists' Association, Vol.36, 321-363. |
| Greig D C, Wright, J E, Hains, B A, and Mitchell, G H. 1968. Geology of the country around Church Stretton, Craven Arms, Wenlock Edge and Brown Clee. Memoir of the Geological Survey, Sheet 166 (England and Wales). (London: HMSO.) 379pp. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
