The BGS Lexicon of Named Rock Units — Result Details
Teilia Formation
| Computer Code: | TLB | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Brigantian Substage (CX) — Brigantian Substage (CX) | ||
| Lithological Description: | Interbedded calcareous mudstones and dark grey, tabular-bedded, argillaceous limestones containing a pectinoid bivalve and goniatite fauna. The Teilia Formation represents a basinal, turbiditic and hemipelagic marine mudstone facies, which onlapped the northern margin (including knoll reefs) of the North Wales Dinantian platform during the Brigantian. | ||
| Definition of Lower Boundary: | Entry of thicker mudstones and dark limestones above conformable contact with thin-bedded limestones of the Prestatyn Limestone Formation; locally rests on"knoll reef" limestones. | ||
| Definition of Upper Boundary: | Conformable contact with bedded cherts of the Pentre Chert Formation. | ||
| Thickness: | To 90m | ||
| Geographical Limits: | Prestatyn area, northeast Wales [SJ 0781] | ||
| Parent Unit: | Craven Group (CRAV) | ||
| Previous Name(s): | Black (Aberdo) Limestone [Obsolete Name And Code: Use TLB]
(BL)
Teilia Beds [Obsolete Name and Code: Use TLB] (-2486) Black Limestone (-572) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | Disused quarry, westsouthwest of Teilia; now largely degraded, the quarry formerly exposed a c.8m section close to the base of the formation. Warren et al. (1984) | ||
| Reference(s): | |||
| Hind, W and Stobbs, J T, 1906. The Carboniferous succession below the Coal Measures in north Shropshire, Denbighshire and Flintshire. Geological Magazine, Vol 5, 387-400, 445-459, 496-507. | |||
| Warren, P T, Price, D, Nutt, M J C and Smith, E G. 1984. Geology of the country around Rhyl and Denbigh. Memoir for 1:50 000 geological sheets 95 and 107 and parts of sheets 94 and 106. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E096 E095 | |||