| gptkbp:instanceOf | gptkb:geological_formation 
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                                | gptkbp:adjacentTo | gptkb:Arctic_National_Wildlife_Refuge gptkb:National_Petroleum_Reserve–Alaska
 
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                                | gptkbp:area | approximately 230,000 square kilometers 
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                                | gptkbp:borders | gptkb:Beaufort_Sea gptkb:Brooks_Range
 
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                                | gptkbp:climate | gptkb:Arctic 
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                                | gptkbp:contains | gptkb:Colville_River_Delta gptkb:Kuparuk_River_Oil_Field
 gptkb:Prudhoe_Bay_Oil_Field
 gptkb:Alpine_Oil_Field
 
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                                | gptkbp:explores | gptkb:U.S._Geological_Survey 
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                                | gptkbp:firstMajorDiscovery | 1968 
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                                | gptkbp:firstMajorDiscoveryField | gptkb:Prudhoe_Bay 
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                                | gptkbp:geologicalAge | Cretaceous Jurassic
 Triassic
 
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                                | gptkbp:hasResource | gptkb:oil natural gas
 
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                                | gptkbp:locatedIn | gptkb:Alaska gptkb:United_States
 
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                                | gptkbp:mainEconomicActivity | hydrocarbon extraction 
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                                | gptkbp:notableFor | gptkb:Kingak_Shale gptkb:Shublik_Formation
 gptkb:Colville_Group
 gptkb:Nanushuk_Formation
 Hue Shale
 Sag River Sandstone
 Torok Formation
 
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                                | gptkbp:oilProductionBegan | 1977 
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                                | gptkbp:oilTransportedBy | gptkb:Trans-Alaska_Pipeline_System 
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                                | gptkbp:bfsParent | gptkb:Schrader_Bluff_Formation 
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                                | gptkbp:bfsLayer | 7 
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                                | https://www.w3.org/2000/01/rdf-schema#label | North Slope Basin 
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