The BGS Lexicon of Named Rock Units — Result Details
Nant-Y-Moch Formation
| Computer Code: | NF | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Pending Upgrade | ||
| Age range: | Cautleyan Stage (OU) — Rawtheyan Stage (OW) | ||
| Lithological Description: | Thinly interbedded turbiditic mudstones and sandstones with units of laminated hemipelagic mudstone. | ||
| Definition of Lower Boundary: | Not seen. | ||
| Definition of Upper Boundary: | Conformable and sharp junction with the disturbed mudstones of the overlying Drosgol Formation. | ||
| Thickness: | 280m+ | ||
| Geographical Limits: | none recorded or not applicable | ||
| Parent Unit: | Not Available (!) | ||
| Previous Name(s): | Nant-Y-Moch Group [Obsolete Name and Code: Use NF]
(-1723)
Nant-Y-Moch Beds [Obsolete Name and Code: Use NF] (-419) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| none recorded or not applicable | |||
| Reference(s): | |||
| Cave, R, and Hains, B A. 1986. Geology of the country between Aberystwyth and Machynlleth. Memoir of the British Geological Survey, Sheet 163 (England and Wales). (London: HMSO). 148 pp. | |||
| Jones, O T. 1909. The Hartfell-Valentian succession in the district around Plynlimon and Pont Erwyd (north Cardiganshire). Quarterly Journal of the Geological Society of London, Vol.65, 463-536. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||