The BGS Lexicon of Named Rock Units — Result Details
Nant-Y-Moch Formation
Computer Code: | NF | Preferred Map Code: | notEntered |
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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) |
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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.]. 148pp. | |||
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 |