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TitleGeological and geochemical data from the Canadian Arctic Islands. Part XV: basal strata of Devonian clastic wedge on Banks Island and correlation with mainland Northwest Territories
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AuthorKabanov, P
SourceGeological Survey of Canada, Open File 8354, 2018, 39 pages, https://doi.org/10.4095/306368
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediadigital; on-line
RelatedThis publication is related to the following publications
File formatreadme
File formatpdf (Adobe®, Acrobat®, or/ou Reader®); rtf; pdz (Adobe®, Acrobat®, or/ou Reader®); xls (Microsoft Excel); xlsx (Microsoft Excel)
ProvinceNunavut
NTS88B; 88C; 96J; 96L; 96M; 96N; 96O; 97; 98A; 98B; 98C; 98D; 106I; 106J; 106K; 106L; 106M; 106N; 106O; 106P; 107
AreaCanadian Arctic Archipelago; Banks Island; Melville Island; Prince Patrick Island; Mackwenzie Delta; Mackenzie Valley; Mackenzie Corridor; Amundsen Gulf
Lat/Long WENS-136.0000 -116.0000 74.0000 66.0000
Subjectsregional geology; stratigraphy; tectonics; paleontology; Middle Devonian; Lower Devonian; sedimentary basins; continental margins; continental shelf; foredeeps; tectonic evolution; stratigraphic correlations; bedrock geology; lithology; sedimentary rocks; carbonates; shales; clastics; turbidites; sandstones; siltstones; limestones; dolostones; structural features; faults; faults, thrust; sedimentary wedges; unconformities; exploration wells; cores; core descriptions; lithostratigraphy; well logging; fossils; microfossils; conodonts; micropaleontology; paleosols; textural analyses; Ellesmere Orogeny; Peel Plain; Mackenzie Plain; Anderson Plain; Blue Fiord Formation; Orksut Formation; Bluefish Member; Nanuk Formation; Weatherall Formation; Blackley Member; Canol Formation; Dodo Canyon Member; Landry Formation; Headless Formation; Hume Formation; Headless Member; Road River Formation; Bluefish Formation; Hare Indian Formation; Ramparts Formation; Kitson Formation; Orksut Formation; Ibbett Bay Formation; Cape de Bray Formation; Blackley Formation; Horn River Group; Norman Range Thrust Fault; siliciclastic rocks; chertstones; Phanerozoic; Paleozoic; Devonian
Illustrationslocation maps; tables; well logs; lithologic sections; correlation sections; geoscientific sketch maps; cross-sections, stratigraphic; geochronological charts; photographs
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Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramWestern Arctic Project Management, GEM2: Geo-mapping for Energy and Minerals
ProgramIGCP Project 652 - Reading Geologic Time in Paleozoic Sedimentary Rocks
Released2018 01 16
Abstract(Summary)
The Ellesmerian foreland basin encroached onto present-day Banks Island by the Early-Middle Devonian boundary and depressed Blue Fiord carbonate shelf into the starved foredeep. From mid-Devonian onward, the foredeep filled with thick turbiditic to floodplain siliciclastics known as the Devonian clastic wedge. Stratigraphy of foredeep strata and adjoining units remained unsettled since 1970s. This study revises nomenclature and proposes correlation with coeval strata of the N.W.T. mainland. In two wells, the upper 10-25m of the Blue Fiord are underlain by thin black shale correlated with the Headless Member. The Orksut Formation (new definition) includes shales onlapping the Blue Fiord and laterally grading to its upper part. The part onlapping the upper Blue Fiord is correlated with the Bluefish Member. The Nanuk Formation is discarded. Overlying shales and turbidites are downgraded from formations to members of the Weatherall Formation. Canol anoxic shales do not extend north of 70°.
Summary(Plain Language Summary, not published)
The Ellesmerian foreland basin encroached onto present-day Banks Island by the Early-Middle Devonian boundary and depressed Blue Fiord carbonate shelf into the starved foredeep. From mid-Devonian onward, the foredeep filled with thick turbiditic to floodplain siliciclastics known as the Devonian clastic wedge. Stratigraphy of foredeep strata and adjoining units remained unsettled since 1970s. This study revises nomenclature and proposes correlation with coeval strata of the N.W.T. mainland. In two wells, the upper 10-25m of the Blue Fiord are underlain by thin black shale correlated with the Headless Member. The Orksut Formation (new definition) includes shales onlapping the Blue Fiord and laterally grading to its upper part. The part onlapping the upper Blue Fiord is correlated with the Bluefish Member. The Nanuk Formation is discarded. Overlying shales and turbidites are downgraded from formations to members of the Weatherall Formation. Canol anoxic shales do not extend north of 70°.
GEOSCAN ID306368