Scottish Coal Measures Group

Scottish Coal Measures Group
Stratigraphic range: Langsettian (Westphalian A) –
Bolsovian (Westphalian C)
TypeGroup
Unit ofCoal Measures Group
Sub-unitsScottish Upper Coal Measures Formation, Scottish Middle Coal Measures Formation, Scottish Lower Coal Measures Formation
UnderliesMauchline Volcanic Formation
OverliesPassage Formation (Clackmannan Group)
Thicknessup to 940 m
Lithology
Primarymudstone, sandstone
Othersiltstone, coal, seatearth
Location
RegionScotland
ExtentMidland Valley

The Scottish Coal Measures Group is a lithostratigraphic unit referring to the coal-bearing succession of rock strata which occur in Scotland during the Westphalian regional stage of the Carboniferous Period. It is the Scottish portion of the informal Coal Measures Group, which also includes the South Wales and Pennine coal measures. The Scottish coal measures are well-exposed across the Midland Valley. The group is also found within small grabens in the vicinity of Sanquhar and Thornhill.[1]

  1. ^ Waters, C.N.; Browne, M.A.E.; Jones, N.S.; Somerville, I.D. (2011-07-13), Waters, C.N.; Somerville, I.D.; Jones, N.S.; Cleal, C.J. (eds.), "Midland Valley of Scotland", A Revised Correlation of Carboniferous Rocks in the British Isles (First ed.), The Geological Society of London, pp. 96–102, doi:10.1144/sr26.14, ISBN 978-1-86239-694-4