| Lithological Description: |
| Ludlow Bone Bed Member locally at base; Platyschisma Shale Member (to 2m) above; mainly yellow, fine-grained, micaceous, well-sorted cross-bedded sandstone (Sandstone Member), with siltstone and olive green mudstone. |
| Definition of Lower Boundary: |
| Base of Ludlow Bone Bed Member (if present); sharp junction with underlying Upper Ludlow Shale (Upper Whitcliffe Formation). |
| Definition of Upper Boundary: |
| Top of highest sandstone below red mudstones of the Ledbury (Raglan Mudstone) Formation or below the conformable base of the olive green mudstones and siltstones of the Temeside Shales Formation. |
| Thickness: |
| About 15m in type area; 17m at Ludlow, 15-20m in South Staffordshire |
| Geographical Limits: |
| Welsh Borderland. |
| Stratotypes: |
| Type Section |
[Sandstone Member]. Old quarry in Tin-Mill Wood, south bank of River Teme near Bringewood Forge Bridge, Downton, Hereford and Worcester (Elles and Slater, 1906). |
| Reference Section |
[All members]. Northwest end of old quarry near Downton Castle Bridge, Downton, Hereford and Worcester (Elles and Slater, 1906). |
| Reference Section |
[Ludlow Bone Bed and Platyschisma Shale Members]. Cutting in car park adjacent to the Swan Inn, Munslow Aston, Corve Dale, Shropshire (Greig and others, 1968). |
| Type Section |
[Ludlow Bone Bed and Platyschisma Shale members]. Roadside section, south side of junction of Whitcliffe Road with main Ludlow to Leominster road, near Ludlow, Shropshire (Bassett and others, 1982). |
| Reference Section |
[Ball, 1951]: Disused quarry, Holloway Street, Upper Gornal, NW of Dudley. |
| 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. |
| Ball, H W, 1951. The Silurian and Devonian rocks of Turners Hill and Gornal, South Staffordshire. Proceedings of the Geologists' Association, Vol.62, 225-236. |
| White, D E and Lawson, J D, 1989. The Pridoli series in the Welsh Borderland and South-Central Wales. 131-141 in A global standard for the Silurian system. Holland, C H and Bassett, M G (editors), National Museum of Wales, Geological Series No.9. Cardiff. |
| Cocks, L R M, Holland, C H, Rickards, R B and Strachan, I, 1971. A correlation of Silurian rocks in the British Isles. Geological Society of London, Special Report No.1. |
| Bassett, M G, Lawson, J D and White, D E, 1982. The Downton Series as the fourth series of the Silurian System, Lethaia, Vol.15, p.1-24. |
