The BGS Lexicon of Named Rock Units — Result Details

Baddinsgill Mudstone Member

Computer Code: BDD Preferred Map Code: BDD
Status Code: Full
Age range: Telychian Age (ST) — Sheinwoodian Age (SS)
Lithological Description: Laminated grey and brown mudstones and silty shales. No sediment coarser than siltstone.
Definition of Lower Boundary: Conformable on Lamb Rig Siltstone Member: First appearance of olive-grey silty mudstone.
Definition of Upper Boundary: Conformable: Highest red, poorly lithified shales below coarse-grained sandstone of the Henshaw Formation.
Thickness: 155m
Geographical Limits: Pentland Hills, Midland Valley.
Parent Unit: Wether Law Linn Formation (WLN)
Previous Name(s): Beds G And H (-2590)
Unit E, Wether Law Linn Formation (-2591)
Upper Member, Wether Law Linn Formation (-2592)
Upper Part Of Fossiliferous Mudstones And Siltstones (-3828)
Beds At G And H (-1336)
Upper Part Of Bed C (-1337)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  North Esk river, west bank, 65m to 115m upstream from confluence with Henshaw Burn. 
Type Section  North Esk river and Henshaw Burn, west banks. 
Partial Type Section  Top of Baddingsgill Mudstone Member and base of Henshaw Formation, North Esk river, west bank, 115m upstream from confluence with Henshaw Burn. 
Reference(s):
Lamont, A, 1952. Ecology and correlation of the Pentlandian - a new division of the Silurian System in Scotland. 27-32 in Faunal and floral facies and zonal correlation. Dighton-Thomas, H (editor). Report of the 18th Session of the International Geological Congress, Great Britain, 1948, Pt.10. 
Tipper, J C, 1976. The stratigraphy of the North Esk Inlier. Scottish Journal of Geology, Vol.12, Pt, 15-22. 
Henderson, J and Brown, D J, 1870. On the Silurian rocks of the Pentland Hills. Transactions of the Edinburgh Geological Society, Vol.1, 266-272. 
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. 
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom. 
Mitchell, G H. 1962. The geology of the neighbourhood of Edinburgh. (Explanation of Sheet 32) Third Edition. (Reprinted 1980). Memoir of the Geological Survey of Great Britain (Scotland). 
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.] 
Howell, H H and Geikie, A, 1861. The Geology of the neighbourhood of Edinburgh (1st edition). Memoir of the Geological Survey, Scotland. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S032