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