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Statements

Subject Item
dbr:Portland_Group_(geology)
rdf:type
yago:WikicatJurassicGeologicFormations dbo:Band yago:Arrangement107938773 yago:Formation108426461 yago:Group100031264 yago:Abstraction100002137
rdfs:label
Portland Group (geology) Portlandien
rdfs:comment
The Portland Group (defining the Portlandian) is a Late Jurassic (Tithonian) lithostratigraphic group (a sequence of rock strata) in South East England. The name is derived from the Isle of Portland in Dorset where the strata are exposed and have been extensively worked. Rocks of this age have in the past been called the Portlandian stage by geologists, which corresponds with the late Tithonian stage of the internationally used geological timescale. Le Portlandien est une subdivision de l'échelle des temps géologiques, équivalent à l'étage du Tithonien. Son stratotype est caractérisé par les calcaires et grès de l'île de Portland en Angleterre. Depuis 1990, le Tithonien remplace le Portlandien, avec une partie du Kimméridgien. Dans les massifs subalpins du nord des Alpes françaises, le Portlandien était représenté par le faciès tithonique.
dbp:name
Portland Group
foaf:depiction
n16:Cliffs,_west_side_of_Portland_-_geograph.org.uk_-_1316572.jpg
dcterms:subject
dbc:Jurassic_System_of_Europe dbc:Isle_of_Portland dbc:Sandstone_formations dbc:Tithonian_Stage dbc:Geologic_formations_of_England dbc:Limestone_formations dbc:Jurassic_England dbc:Geological_groups_of_the_United_Kingdom dbc:Geology_of_Dorset
dbo:wikiPageID
34306648
dbo:wikiPageRevisionID
1083717322
dbo:wikiPageWikiLink
dbr:Mudstone dbr:Stage_(stratigraphy) dbr:Portland_Bill dbc:Jurassic_System_of_Europe dbr:Siltstone dbr:Isle_of_Purbeck dbr:Portland_Stone_Formation dbr:Micrite dbr:Kimmeridge_Clay_Formation dbr:South_East_England dbc:Sandstone_formations dbc:Tithonian_Stage dbc:Isle_of_Portland dbr:Portland_Sand_Formation dbr:Rock_strata dbr:Member_(geology) dbr:Isle_of_Portland dbr:Lithostratigraphy dbr:Dolomite_(mineral) dbr:Dolomite_(rock) dbr:Dorset dbc:Geologic_formations_of_England dbr:Purbeck_Group dbr:Tithonian dbr:Weymouth,_Dorset dbr:Late_Jurassic dbr:Sandstone dbc:Limestone_formations dbr:Stratum dbr:Group_(stratigraphy) dbr:Portlandian dbr:England dbr:Portland_stone dbr:Limestone dbc:Geological_groups_of_the_United_Kingdom dbc:Jurassic_England dbc:Geology_of_Dorset dbr:Geological_timescale
owl:sameAs
n9:38W3z freebase:m.0hzm39g dbpedia-fr:Portlandien wikidata:Q3399326 yago-res:Portland_Group_(geology)
dbp:subunits
dbr:Portland_Stone_Formation dbr:Portland_Sand_Formation
dbp:underlies
dbr:Purbeck_Group
dbp:wikiPageUsesTemplate
dbt:Portal dbt:Fossilrange dbt:Flag dbt:Infobox_rockunit dbt:For dbt:Reflist dbt:Use_dmy_dates dbt:Convert
dbo:thumbnail
n16:Cliffs,_west_side_of_Portland_-_geograph.org.uk_-_1316572.jpg?width=300
dbp:caption
Cliffs of the Portland Stone Formation on the western side of Portland Bill
dbp:period
Tithonian
dbp:region
dbr:England
dbp:thickness
up to
dbp:type
dbr:Group_(stratigraphy)
dbo:abstract
The Portland Group (defining the Portlandian) is a Late Jurassic (Tithonian) lithostratigraphic group (a sequence of rock strata) in South East England. The name is derived from the Isle of Portland in Dorset where the strata are exposed and have been extensively worked. Rocks of this age have in the past been called the Portlandian stage by geologists, which corresponds with the late Tithonian stage of the internationally used geological timescale. Le Portlandien est une subdivision de l'échelle des temps géologiques, équivalent à l'étage du Tithonien. Son stratotype est caractérisé par les calcaires et grès de l'île de Portland en Angleterre. Depuis 1990, le Tithonien remplace le Portlandien, avec une partie du Kimméridgien. Dans les massifs subalpins du nord des Alpes françaises, le Portlandien était représenté par le faciès tithonique.
dbp:extent
dbr:Dorset
dbp:namedfor
dbr:Isle_of_Portland
dbp:otherlithology
dbr:Mudstone dbr:Micrite
dbp:overlies
dbr:Kimmeridge_Clay_Formation
dbp:prilithology
dbr:Limestone dbr:Sandstone
gold:hypernym
dbr:Group
prov:wasDerivedFrom
wikipedia-en:Portland_Group_(geology)?oldid=1083717322&ns=0
dbo:wikiPageLength
3635
foaf:isPrimaryTopicOf
wikipedia-en:Portland_Group_(geology)