The BGS Lexicon of Named Rock Units — Result Details

Upper Dornoch Sandstone unit

Computer Code: UDSA Preferred Map Code: notEntered
Status Code: Index Level
Age range: Early Eocene Epoch (GEE) — Early Eocene Epoch (GEE)
Lithological Description: In the type well of the Dornoch Formation (14/25-1), and most other Outer Moray Firth sections, the Upper Dornoch Sandstone unit is made up of a series of upward-coarsening, siltstone-sandstone cycles, generally with a low-gamma, poorly consolidated sandstone at the top. Individual cycles typically range from 10 to over 50 m in thickness. In some Northern North Sea sections (e.g. 3/3-8) the coarsening-upward motif is less pronounced, and the unit generally consists of an alternation of clean, poorly consolidated sandstone and silty mudstone.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Dornoch Formation (DORN)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
Knox, R W O'B and Holloway, S. 1992. 1. Paleogene 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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable