| Computer Code: |
BRNT |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Aalenian Age (JA)
— Bathonian Age (JN) |
| Lithological Description: |
Sandstones with minor mudstones that have been placed into five formations:
Broom Formation;
Etive Formation;
Ness Formation;
Rannoch Formation;
Tarbert Formation. |
| Definition of Lower Boundary: |
Defined by the base of the Broom Formation where there is a downward change from sandstones to mudstones (of the Drake Formation). |
| Definition of Upper Boundary: |
Defined by the upper boundary of the Tarbert Formation where there is a down-section change from siltstones (Heather Formation) to sandstone. |
| Thickness: |
Up to 300 m. |
| Geographical Limits: |
East Shetland Basin and into the Viking Graben. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
Brent Formation
(-5177)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| none recorded or not applicable |
| Reference(s): |
| Bowen, J M. 1975. The Brent Oil-Field. 353-361 in Petroleum and the continental shelf of North-West Europe. Woodland, A W (editor). (Heyden and Son, London.) |
| Deegan, C E and Scull, B J. 1977. A standard lithostratigraphic nomenclature for the Central and Northern North Sea. Report of the Institute of Geological Sciences, 77/25; NPD Bulletin No.1. |
| Richards, P C, Lott, G K, Johnson, H, Knox, R W O'B. and Riding, J B. 1993. 3. Jurassic of the Central and Northern North Sea. In: Knox, R W O'B and Cordey, W G (eds.). Lithostratigraphic nomenclature of the UK North Sea. British Geological Survey, Nottingham. |
| Waters, C N, Gillespie, M R, Smith, K, Auton, C A, Floyd, J D, Leslie, A G, Millward, D, Mitchell, W I, McMillan, A A, Stone, P, Barron, A J M, Dean, M T, Hopson, P M, Krabbendam, M, Browne, M A E, Stephenson, D, Akhurst, M C, and Barnes, R P. 2007. Stratigraphical Chart of the United Kingdom: Northern Britain. (British Geological Survey.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
