The BGS Lexicon of Named Rock Units — Result Details

North Esk Group

Computer Code: NSK Preferred Map Code: NSK
Status Code: Full
Age range: Telychian Age (ST) — Homerian Age (SH)
Lithological Description: Regressive sequence passing up from turbidite mudstones, siltstones and sandstones, through laminated mudstones and siltstones to sandstones and conglomerates.
Definition of Lower Boundary: Not exposed.
Definition of Upper Boundary: Not exposed - Unconformably overlain by Greywacke Conglomerate Formation (Lower 'Old Red Sandstone') and faulted against Kinneswood Formation (Inverclyde Group).
Thickness: At least 2500m
Geographical Limits: Pentland Hills, Midland Valley.
Parent Unit: Not Applicable (-)
Previous Name(s): North Esk Formation [Obsolete Name And Code: Use NSK] (NES)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  North Esk Inlier, Bavelaw Castle Inlier and Loganlee Inlier, Pentland Hills. 
Reference(s):
Tipper, J C, 1976. The stratigraphy of the North Esk Inlier. Scottish Journal of Geology, Vol.12, Pt, 15-22. 
Robertson, G, 1989. A palaeoenvironmental interpretation of the Silurian rocks in the Pentland Hills, near Edinburgh, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol.80, 127-141. 
Robertson, G, 1986. North Esk Inlier. 174-185 in Lothian Geology. An Excursion Guide. McAdam, A D and Clarkson, E N K (editors). [Edinburgh: Scottish Academic Press.] 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S024 S032 S032