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- Culm_Measures abstract "The Culm Measures are a thick sequence of geological strata originating during the Carboniferous Period that occur in south-west England, principally in Devon and Cornwall, now known as the Culm Supergroup. Its thickness varies between 3600m and 4750m though intense folding complicates it at outcrop. They are so called because of the occasional presence of a soft, sooty coal, which is known in Devon as culm. The word culm may be derived from the Old English word for coal col or from the Welsh word cwlwm meaning knot (due to the folding of the beds in which the coal is found).The majority of the succession consists of shales and thin sandstones, but there are also occurrences of slate, limestone and chert.Culm grassland on the formation's slates and shales is composed of purple moor grass and rush pasture. It is noted for a wide diversity of species, some extremely rare including the Marsh Fritillary butterfly. Some 92 percent of Culm grassland has been lost in the past 100 years, 48 percent being lost between 1984 and 1991 alone. There are a number of organisations trying to halt the decline including Devon Wildlife Trust with its Culm Natural Networks project, Butterfly Conservation, and Natural England with its Environmental Stewardship Scheme.Culm soils have traditionally been used for grazing as they are heavy to work and acidic.".
- Culm_Measures thumbnail Millook_cliffs_enh.jpg?width=300.
- Culm_Measures wikiPageExternalLink index.php?p=CULM38709-h.htm.
- Culm_Measures wikiPageExternalLink profiles%5CnaProfile93.pdf.
- Culm_Measures wikiPageID "6852799".
- Culm_Measures wikiPageRevisionID "586540059".
- Culm_Measures hasPhotoCollection Culm_Measures.
- Culm_Measures subject Category:Coal_in_England.
- Culm_Measures subject Category:Geologic_formations_of_the_United_Kingdom.
- Culm_Measures subject Category:Geology_of_Cornwall.
- Culm_Measures subject Category:Geology_of_Devon.
- Culm_Measures subject Category:Sedimentology.
- Culm_Measures type Abstraction100002137.
- Culm_Measures type Arrangement107938773.
- Culm_Measures type Formation108426461.
- Culm_Measures type GeologicFormationsOfTheUnitedKingdom.
- Culm_Measures type Group100031264.
- Culm_Measures comment "The Culm Measures are a thick sequence of geological strata originating during the Carboniferous Period that occur in south-west England, principally in Devon and Cornwall, now known as the Culm Supergroup. Its thickness varies between 3600m and 4750m though intense folding complicates it at outcrop. They are so called because of the occasional presence of a soft, sooty coal, which is known in Devon as culm.".
- Culm_Measures label "Culm Measures".
- Culm_Measures label "Kulm (skały)".
- Culm_Measures sameAs Kulm_(skały).
- Culm_Measures sameAs m.0gsmmt.
- Culm_Measures sameAs Q5193075.
- Culm_Measures sameAs Q5193075.
- Culm_Measures sameAs Culm_Measures.
- Culm_Measures wasDerivedFrom Culm_Measures?oldid=586540059.
- Culm_Measures depiction Millook_cliffs_enh.jpg.
- Culm_Measures isPrimaryTopicOf Culm_Measures.
