The BGS Lexicon of Named Rock Units — Result Details

Port-an-Righ Ironstone Member

Computer Code: PARIR Preferred Map Code: notEntered
Status Code: Full
Age range: Callovian Age (JC) — Oxfordian Age (JO)
Lithological Description: Muddy, glauconitic sand with interbedded bands of red-weathering nodular glauconitic limestone, all rich in ammonites.
Definition of Lower Boundary: Overlies the Shandwick Siltstone Member (SWKSI).
Definition of Upper Boundary: Overlain by the Port-an-Righ Siltstone Member (PARSI).
Thickness: 2.2 m.
Geographical Limits: Onshore Moray Firth area, north-east Scotland.
Parent Unit: Balintore Formation (BALR)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Foreshore at Cadh'-an-Righ and Port-an-Righ [NH 849 723 to 853 733] (Cox and Sumbler, 2002, pp. 376-379; Sykes, 1975; Wright and Cox, 2001, pp. 188-190). 
Reference(s):
Buckman, S S. 1923. Type Ammonites Vol. 4. (London.) 
Cox, B M, and Sumbler, M G. 2002. British Middle Jurassic Stratigraphy. Geological Conservation Review Series No. 26. (Peterborough: Joint Nature Conservation Committee.) 
Wright, J K, and Cox, B M. 2001. British Upper Jurassic Stratigraphy (Oxfordian to Kimmeridgian). Geological Conservation Review Series. No. 21. (Peterborough: Joint Nature Conservation Committee/Chapman and Hall.) 
Barron, A J M, Lott, G K, and Riding, J B. 2012. Stratigraphical framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf. British Geological Survey Research Report RR/11/06. 
Sykes, R M. 1975. The stratigraphy of the Callovian and Oxfordian stages (Middle-Upper Jurassic) in northern Scotland. Scottish Journal of Geology, Vol.11, 51-78. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable