| dbo:abstract |
The Holsworthy Group is a late Carboniferous lithostratigraphic group (a sequence of rock strata) in north and east Cornwall and Devon in southwest England. The name is derived from the Devon town of Holsworthy. The Group comprises (in ascending order i.e. oldest first) the Crackington, Bideford and Bude formations. In the Launceston area the group is represented by the Bealsmill Formation. It was formerly known as the Upper Culm Group. The Crackington Formation is over 1km thick in the Exeter area but amounts to only 250m around Bideford. It consists of mudstones with lesser sandstones and siltstones displaying rhythmic bedding, typical of turbidite deposits. The overlying Bideford Formation is over 1200m thick in places and consists of interbedded sandstones, mudstones and siltstones with a range of different characters including turbidites, channel sandstones, cross-bedded and slumped sandstones and locally contains burrows and rootlets. The Bude Formation is calculated to be around 1.3km thick along the north coast and consists of silty sandstones and mudstones. It is fossiliferous and locally contains ironstones and calcareous nodules. The Bealsmill Formation is at least 120m thick and consists of interbedded sandstones, siltstones and mudstones with some conglomerate beds containing chert, lava and limestone clasts. (en) |
| dbo:thumbnail |
wiki-commons:Special:FilePath/Coloured_strata_on_th...ograph.org.uk_-_1518539.jpg?width=300 |
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44554591 (xsd:integer) |
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3549 (xsd:nonNegativeInteger) |
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1091921805 (xsd:integer) |
| dbo:wikiPageWikiLink |
dbr:Carboniferous dbr:Bideford dbr:Devon dbr:United_Kingdom dbr:Limestone dbr:Cornwall dbr:Chert dbr:Chevron_(geology) dbr:England dbr:Conglomerate_(geology) dbr:Holsworthy,_Devon dbr:Hartland_Quay dbr:Lava dbc:Carboniferous_System_of_Europe dbr:Exeter dbr:Exeter_Group dbr:Siltstone dbc:Geological_groups_of_the_United_Kingdom dbr:Launceston,_Cornwall dbr:Turbidite dbc:Geology_of_Devon dbc:Geology_of_Cornwall dbr:Group_(stratigraphy) dbr:Sandstone dbr:Lithostratigraphy dbr:Namurian dbr:Mudstone dbr:Teign_Valley_Group dbr:Clast dbr:Rock_strata dbr:Culm_Supergroup dbr:Bolsovian |
| dbp:age |
Namurian to Bolsovian (en) |
| dbp:caption |
Chevron folded alternations of sandstone and mudstone of the Crackington Formation, Warren Bay, Hartland Quay (en) |
| dbp:country |
dbr:United_Kingdom |
| dbp:extent |
north and east Cornwall to north and east Devon (en) |
| dbp:name |
Holsworthy Group (en) |
| dbp:namedfor |
dbr:Holsworthy,_Devon |
| dbp:otherlithology |
siltstones, sandstones, conglomerates (en) |
| dbp:overlies |
dbr:Teign_Valley_Group |
| dbp:period |
Carboniferous (en) |
| dbp:prilithology |
mudstones, (en) |
| dbp:region |
England (en) |
| dbp:subunits |
Crackington Formation, Bideford Formation, Bude Formation (en) |
| dbp:thickness |
240000.0 |
| dbp:type |
dbr:Group_(stratigraphy) |
| dbp:underlies |
dbr:Exeter_Group |
| dbp:unitof |
dbr:Culm_Supergroup |
| dbp:wikiPageUsesTemplate |
dbt:Infobox_rockunit dbt:Portal dbt:Reflist dbt:Use_dmy_dates |
| dcterms:subject |
dbc:Carboniferous_System_of_Europe dbc:Geological_groups_of_the_United_Kingdom dbc:Geology_of_Devon dbc:Geology_of_Cornwall |
| gold:hypernym |
dbr:Group |
| rdf:type |
dbo:Band |
| rdfs:comment |
The Holsworthy Group is a late Carboniferous lithostratigraphic group (a sequence of rock strata) in north and east Cornwall and Devon in southwest England. The name is derived from the Devon town of Holsworthy. The Group comprises (in ascending order i.e. oldest first) the Crackington, Bideford and Bude formations. In the Launceston area the group is represented by the Bealsmill Formation. It was formerly known as the Upper Culm Group. (en) |
| rdfs:label |
Holsworthy Group (en) |
| owl:sameAs |
freebase:Holsworthy Group yago-res:Holsworthy Group wikidata:Holsworthy Group https://global.dbpedia.org/id/udiZ |
| prov:wasDerivedFrom |
wikipedia-en:Holsworthy_Group?oldid=1091921805&ns=0 |
| foaf:depiction |
wiki-commons:Special:FilePath/Coloured_strata_on_th...Beach_-_geograph.org.uk_-_1518539.jpg |
| foaf:isPrimaryTopicOf |
wikipedia-en:Holsworthy_Group |
| is dbo:wikiPageWikiLink of |
dbr:Holsworthy dbr:Culm_Measures dbr:List_of_geological_groups_of_Great_Britain dbr:Geology_of_Dartmoor_National_Park dbr:Exeter_Group dbr:Teign_Valley_Group |
| is dbp:overlies of |
dbr:Exeter_Group |
| is dbp:underlies of |
dbr:Teign_Valley_Group |
| is foaf:primaryTopic of |
wikipedia-en:Holsworthy_Group |
