The BGS Lexicon of Named Rock Units — Result Details

Teal Sandstone Member

Computer Code: TEAS Preferred Map Code: notEntered
Status Code: Full, pending ratification
Age range: Paleocene Epoch (GP) — Paleocene Epoch (GP)
Lithological Description: The Teal Sandstone Member consists of fine to coarse grained sandstone with minor interbedded mudstone. The sandstone is moderately to poorly sorted, often with a grey muddy matrix.
Definition of Lower Boundary: Where mudstone is present at the base of the Sele Formation, the base of the Teal Sandstone Member is taken at a sharp downward change from sandstone to dark grey mudstone, associated with an increase in gamma-ray values and a decrease in velocity (e.g. 3/30a-3). Elsewhere, the sandstone rests directly on Lista mudstone (e.g. 9/8-3).
Definition of Upper Boundary: The top of the Teal Sandstone member is taken at a downward change from dark grey, laminated mudstone to sandstone, associated with a decrease in gamma-ray values and an increase in velocity. A low-gamma mudstone unit, representing the uppermost part of Sele unit 1b (refer to Sele Formation), rests on the sandstone in some sections.
Thickness: Reaches thicknesses in the order of 100 m.
Geographical Limits: The Teal Sandstone Member is restricted to North Viking Graben.
Parent Unit: Sele Formation (SELE)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Reference Section  North Sea well 9/8-3: 1670.5-1778 m (5480-5834 ft).

Knox and Holloway (1992) note: type section 3/30a-3: 2265.5-2368.5 m (7433-7770 ft) below KB. This well has not been located. 
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