Brent Group

Brent Group
Stratigraphic range: Aalenian–Bathonian
Type	Group (stratigraphy)
Sub-units	Broom Formation, Rannoch Formation, Etive Formation, Ness Formation and Tarbet Formation
Underlies	Heather Formation
Overlies	Drake Formation
Area	East Shetland Basin, Viking Graben
Thickness	up to 300 metres (980 ft)
Lithology
Primary	Sandstone
Other	Mudstone, Coal
Location
Region	North Sea
Type section
Named for	Brent oil field

The Brent Group is a stratigraphic group of Middle Jurassic age. It is an important hydrocarbon reservoir in the Northern North Sea. It is named for the Brent oil field, where it forms one of the reservoir units.[1][2] It is subdivided into five formations, in order of age, the Broom, Rannoch, Etive, Ness and Tarbet Formations whose first letters spell out the name of the group.[3]

References

1. Richards, P.C. "An introduction to the Brent Group: a literature review". In Morton, A.C.; Haszeldine, R.S.; Giles, M.R.; Brown, S. (eds.). Geology of the Brent Group. Special Publications. Vol. 61. Geological Society. pp. 15–26. doi:10.1144/GSL.SP.1992.061.01.03.
2. British Geological Survey. "Brent Group". The BGS Lexicon of Named Rock Units.
3. Struijk, A.P.; Green, R.T. (1991). Abbotts, I.L. (ed.). United Kingdom Oil and Gas Fields, 25 Years Commemorative Volume. Geological Society Memoir. Vol. 14. Geological Society. pp. 63–72. doi:10.1144/GSL.MEM.1991.014.01.0.