Trawden Limestone Group

The Trawden Limestone Group is a lithostratigraphical term referring to the succession of limestone rock strata which occur in parts of Lancashire and neighbouring Yorkshire, northern England in the United Kingdom laid down within the Chadian to Brigantian sub-Stages of the Carboniferous Period.^[1]

Trawden Limestone Group
Stratigraphic range: Chadian-Brigantian sub-stages
Type	Group
Unit of	Carboniferous Limestone Supergroup
Underlies	Bowland Shale Formation
Overlies	Roddlesworth Formation
Thickness	up to 1055m
Lithology
Primary	limestone
Other	mudstone, chert, dolomite
Location
Region	northern England
Extent	Lancashire, Yorkshire
Type section
Named for	Trawden

The Trawden Limestone Group is preceded (underlain) by the Roddlesworth Formation. It is succeeded (overlain) by the Bowland Shale Formation.^[2]