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TitleUpper Triassic to Lower Jurassic stratigraphy along the northeastern margin of the Sverdrup Basin, Axel Heiberg and Ellesmere islands, Nunavut: new data from measured sections
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMidwinter, D; Hadlari, TORCID logo; Dewing, KORCID logo
SourceGeological Survey of Canada, Open File 8855, 2022, 17 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediadigital; on-line
File formatpdf
NTS49G/07; 340B/11
AreaAxel Heiberg Island; Depot Point; Ellesmere Island; Blue Mountains
Lat/Long WENS -85.6608 -85.6606 80.6453 80.6450
Lat/Long WENS -85.5394 -85.5394 79.4531 79.4528
Subjectsstratigraphy; tectonics; geophysics; Science and Technology; Nature and Environment; Lower Jurassic; Upper Triassic; sedimentary basins; systematic stratigraphy; bedrock geology; lithology; sedimentary rocks; mudstones; sandstones; coal; depositional environment; provenance; tectonic setting; rifting; depositional history; stratigraphic correlations; tectonostratigraphic zones; well logging; gamma ray logging; Sverdrup Basin; Heiberg Formation; Remus Member; Fosheim Member; Romulus Member; Heiberg Group; Barrow Formation; Jameson Bay Formation; Proto-Amerasia Basin; Phanerozoic; Mesozoic; Jurassic; Triassic
Illustrationslocation maps; geoscientific sketch maps; stratigraphic charts; satellite images; stratigraphic sections; photographs; stratigraphic cross-sections; gamma ray logs
ProgramGEM2: Geo-mapping for Energy and Minerals Western Arctic Sverdrup Basin
Released2022 01 19
AbstractTwo stratigraphic sections were measured through Late Triassic - Early Jurassic aged strata in the Blue Mountains map area (NTS 340-B/11) on Ellesmere Island and the Depot Point map area (NTS 049-G/7) on Axel Heiberg Island. These sections are subdivided in terms of established member and formation names based on previous mapping along the north-eastern margin of the Sverdrup Basin. The lowermost strata in the Heiberg Formation, the Romulus Member (510-575 m thick), is a coarsening-upward succession of mudstone to fine-grained sandstone from a prodelta to delta plain environment. The overlying Fosheim Member (317-425 m) is a coal-bearing and sandstone-rich interval from a mixed alluvial-marine environment, such as a delta plain. It is overlain by the Remus Member (100-112 m); a sandstone-rich unit representative of shallow marine deposits. The Heiberg Formation at Depot Point is of similar thickness (1009 m) to the Blue Mountains (1035 m) and may represent a marginally more distal basinal setting with a thinner Fosheim Member but a slightly thicker Romulus and Remus members.
Summary(Plain Language Summary, not published)
Field work was carried out by the GSC on Axel Heiberg and Ellesmere islands in 2015. This report presents observations of bedrock in the form of stratigraphic logs that describe the rocks. Sedimentary environments and formation thicknesses are reconciled with previous reports from the study area by others. The material in this report will be used by researchers to compare to the same formations in the subsurface where they are intersected by drill holes, and to place sample materials in geological context.

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