Trawden Limestone Group Explained

Trawden Limestone Group
Type:Group
Age:Chadian-Brigantian sub-stages
Otherlithology:mudstone, chert, dolomite
Namedfor:Trawden
Region:northern England
Unitof:Carboniferous Limestone Supergroup
Underlies:Bowland Shale Formation
Overlies:Roddlesworth Formation
Thickness:up to 1055m
Extent:Lancashire, Yorkshire

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]

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

See also

Geology of Lancashire

Notes and References

  1. Web site: Trawden Limestone Group . . BGS Lexicon of Named Rock Units . 6 August 2016.
  2. British Geological Survey 1:625,000 scale geological map Bedrock geology: UK South (5th edn) BGS, Keyworth, Notts