Border Group

The Border Group is a Carboniferous lithostratigraphic group (a sequence of rock strata) in southern Scotland and northernmost England. The name is derived from the Scottish Borders region. The rocks of the Border Group have also previously been referred to as the Lower, Middle and Upper Border groups.^[1]

Border Group
Stratigraphic range: Chadian to Holkerian substages of Carboniferous
Type	Group
Sub-units	Lyne and Fell Sandstone formations, Kershopefoot Basalt Beds
Underlies	Yoredale Group
Overlies	Inverclyde Group
Thickness	more than 1350m
Lithology
Primary	sandstones
Other	siltstone, limestone, dolomite, conglomerate, basalt
Location
Country	Scotland, England
Extent	Northumberland and Solway basins
Type section
Named for	Scottish Borders