The BGS Lexicon of Named Rock Units — Result Details

Ling Sandstone Member

Computer Code: LISA Preferred Map Code: notEntered
Status Code: Full, pending ratification
Age range: Callovian Age (JC) — Callovian Age (JC)
Lithological Description: Medium- to coarse-grained (rarely fine-grained) sandstones, each bed being 1 to 10 m thick. Mudstone rip-up clasts, water escape features, and gravel lags present (Cockings et al., 1992). Relatively thin, dark grey to black mudstones are interbedded with the sandstones.
Definition of Lower Boundary: The base of the member is defined by a down-section change from sandstones to mudstones. It is marked by a sharp down-section increase in gamma-ray values and often a decrease in velocity.
Definition of Upper Boundary: The top is defined by a down-section transition from mudstone (Heather Formation) to sandstone; a down-section decrease in gamma ray values; and often by an increase in velocity.
Thickness: Up to 124 m.
Geographical Limits: Confined to North Sea Blocks 16/7 and 16/8, South Viking Graben.
Parent Unit: Heather Formation (HTHE)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  North Sea well 16/8a-4 between depths 4757 and 4881 m (Cockings et al., 1992; Richards et al., 1993). 
Cockings, J H, Kessler, L G Ii, Mazza, T A and Riley, L A. 1992. Bathonian to Mid-Oxfordian sequence stratigraphy of the south Viking Graben, North Sea. In: Hardman, R F P (ed.) Exploration Britain: Geological insights for the next decade. Special Publication of the Geological Society, No. 67, 65-105. 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable