| 词条 | Trawden Limestone Group |
| 释义 |
| name = Trawden Limestone Group | image = | caption = | type = Group | age = Chadian-Brigantian sub-stages | prilithology = limestone | otherlithology = mudstone, chert, dolostone | namedfor = Trawden | namedby = | region = northern England | country = | coordinates = | unitof = Carboniferous Limestone Supergroup | subunits = | underlies = Bowland Shale Formation | overlies = Roddlesworth Formation | thickness = up to 1055m | extent = Lancashire, Yorkshire | area = | map = | map_caption = }} 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] References1. ^{{cite web | url=http://www.bgs.ac.uk/Lexicon/lexicon.cfm?pub=TRLI | title=Trawden Limestone Group | publisher=British Geological Survey | work=BGS Lexicon of Named Rock Units | accessdate=6 August 2016}} 2. ^British Geological Survey 1:625,000 scale geological map Bedrock geology: UK South (5th edn) BGS, Keyworth, Notts See alsoGeology of Lancashire{{UK-geologic-formation-stub}} 2 : Carboniferous System of Europe|Stratigraphy of the United Kingdom |
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