The BGS Lexicon of Named Rock Units — Result Details

Main Hosie Limestone

Computer Code: MAHO Preferred Map Code: MAHO
Status Code: Full
Age range: Brigantian Substage (CX) — Brigantian Substage (CX)
Lithological Description: A pale to dark grey, argillaceous, crinoidal and shelly bioclastic limestone.
Definition of Lower Boundary: Generally seen as a conformable change from a marine mudstone within the Lower Limestone Formation.
Definition of Upper Boundary: Generally seen as a change to marine mudstone within the Lower Limestone Formation.
Thickness: From 0.05 m to 2.2 m thick in the Airdrie, Falkirk and Glasgow districts. This limestone fuses with the Mid Hosie Limestone at Petershill in the Bathgate Hills.
Geographical Limits: Throughout most of the outcrop of the Lower Limestone Formation in the Midland Valley of Scotland; but locally difficult to recognize in Ayrshire and Lanarkshire where the Hosie limestones join together as the McDonald Limestone in the shelf setting. Also locally difficult to recognise in Fife, in the on-delta setting, where it is equivalent to the Seafield Marine Band.
Parent Unit: Lower Limestone Formation (LLGS)
Previous Name(s): Chapel Point Limestone [Obsolete Name And Code: Use MAHO] (CPLS)
Lower Vexhim Limestone [Obsolete Name And Code: Use MAHO] (LVEX)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Wester Gartshore Colliery Underground Borehole, BGS reg. no NS67SE/99 at Kirkintilloch NW of Airdrie, with a base encountered at 111.8 m depth, and of 0.99 m thickness. 
Type Area  Houston, west of Paisley, around Gryfe Water. 
Reference(s):
Forsyth, I H, Hall, I H S and McMillan, A A. 1996. Geology of the Aidrie district. Memoir of the British Geological Survey, Sheet 31W (Scotland). 
Hinxman, L W, Anderson, E M and Carruthers, R G. 1920. The economic geology of the Central Coalfield of Scotland, Area IV; Paisley, Barrhead, Renfrew. Memoir of the Geological Survey, Scotland. 
Lexique Stratigraphique International. 1971. Volume 1, Europe, Fascicule 3a, England, Wales and Scotland, Part 3a VII, Lower Carboniferous (Dinantian). 
Browne, M A E, Dean, M T, Hall, I H S, McAdam, A D Monro, S K and Chisholm, J I. 1999. A lithostratigraphical framework for the Carboniferous rocks in the Midland Valley of Scotland. British Geological Survey Research Report, RR/99/07. 
Hall, I H S, Browne, M A E and Forsyth, I H. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E (Scotland). 
Cameron, I B, Aitken, A M, Browne, M A E and Stephenson, D. 1998. Geology of Falkirk District. Memoir of the British Geological Survey Sheet 31E (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S031 S031 S023 S032 S030 S030 S032