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TitleStratigraphic synthesis of the Hudson Platform in Manitoba, Ontario, and Nunavut: Ordovician-Silurian
AuthorArmstrong, D K; Nicolas, M P B; Hahn, K E; Lavoie, D
SourceGeological Survey of Canada, Open File 8378, 2018, 48 pages, (Open Access)
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
ProvinceOntario; Manitoba; Nunavut; Northern offshore region
NTS24M; 24N; 24O; 24P; 25; 26B; 26C; 26D; 26E; 26F; 26K; 26L; 32; 33; 34; 35; 36; 42; 43; 44; 45; 46; 52H; 52I; 52O; 52P; 53; 54; 55; 56
AreaHudson Bay; Hudson Strait; Ungava Bay; Baffin Island; Southampton Island; Foxe Basin; James Bay; Ungava Peninsula; Rowley Island; Melville Peninsula; Akpatok Island
Lat/Long WENS -96.0000 -64.0000 68.0000 49.0000
Subjectsregional geology; stratigraphy; paleontology; geophysics; systematic stratigraphy; stratigraphic analyses; stratigraphic nomenclature; basin analysis; lithostratigraphy; biostratigraphy; stratigraphic correlations; fossils; microfossils; geophysical surveys; seismic surveys; exploration wells; drillholes; bedrock geology; lithology; sedimentary rocks; Hudson Platform; Hudson Bay Basin; Moose River Basin; Foxe Basin; Hudson Bay Lowland; Bell Arch; Cape Henrietta-Maria Arch; Kenogami River Formation; Attawapiskat Formation; Ekwan River Formation; Severn River Formation; Red Head Rapids Formation; Foster Bay Formation; Churchill River Group; Chasm Creek Formation; Caution Creek Formation; Bad Cache Rapids Group; Surprise Creek Formation; Portage Chute Formation; Akpatok Formation; Amadjuak Formation; Frobisher Bay Formation; Shop Point Formation; Ungava Bay Formation; Premium Homestead L-26 Akpatok Well; Trillium et al. O-23 Beluga Well; Houston et al. No. 1 Comeault Well; Sogepet Aquitaine No. 1 Kaskattama Well; Aquitaine et al. O-58 Narwhal South Well; ICG et al. N-01 Netsiq Well; Aquitaine No. 1 Pen Island Well; Aquitaine et al. C-11 Polar Bear Well; Aquitaine et al. A-71 Walrus Well; Merland Exploration No. 1 Whitebear Creek Well; Inco-Winisk Well; Boas River Formation; chemostratigraphy; high-resolution seismic surveys; Phanerozoic; Paleozoic; Silurian; Ordovician
Illustrationslocation maps; stratigraphic correlations; tables
Natural Resources Canada Library - Ottawa (Earth Sciences)
ProgramHudson/Ungava, Stratigraphy Petroleum Basins, GEM2: Geo-mapping for Energy and Minerals
Released2018 07 10
AbstractThe Hudson Bay Basin is the largest intracratonic basin in North America. Together with its smaller satellite basins, Moose River Basin to the south and Foxe Basin to the north, it forms the Hudson Platform. Geological study of this large, marine-dominated, area goes back to the 19th century when explorers started to describe rock units along the shore on many Arctic islands. Modern era geological description, including mostly stratigraphy and paleontology, started in the mid 20th century when numbers of geologists described the rock successions, onshore and offshore, resulting in local stratigraphic nomenclatures and frameworks hardly correlatable from one area to another.
At the start of the initial Hudson Bay-Foxe Basins project and subsequent Hudson Bay-Ungava project of the Geoscience for Energy and Minerals program of the Geological Survey of Canada, one of the major research goals was to propose a unified or at least, a modern understanding of the stratigraphic succession over this large geological domain. This report presents the resulting stratigraphic framework based on 9 years (2008-2017) of new Ordovician to Silurian lithostratigraphic, biostratigraphic and chemostratigraphic, onshore and offshore research and data acquisition over the entire basin. A second report will focus on the aerially more restricted Devonian succession.
The Ordovician to Silurian succession in northeastern Manitoba and northern Ontario, present in the Hudson Bay Lowland and Moose River Basin, is for the first time integrated in a single stratigraphic framework. To the north in the Hudson Bay Basin, Foxe Basin and Hudson Strait, stratigraphic nomenclatures are integrated in one new framework that is now correlated with the successions further to the south. Biostratigraphy and chemostratigraphy were both instrumental in the correlation of distant rock successions.
Summary(Plain Language Summary, not published)
The Hudson Bay Basin is the largest intracratonic basin in North America and stretches for over 1500 kilometers from northern Ontario / northeastern Manitoba to the southwest of Baffin Island in Nunavut. The stratigraphic succession spans from the Upper Ordovician to the Upper Devonian with some local areas of preserved younger sediments of Mesozoic to Cenozoic age. Before the initiation of GEM research program in the Canadian Arctic, a complex stratigraphic framework was in place for the Hudson Bay Basin with distinct offshore nomenclatures in Manitoba, Ontario and Nunavut and in the offshore domain. Over the last 8 years, through detailed fieldwork and core logging, joint field trips and workshops and the extensive new biostratigraphic and chemostratigraphic data, a regional stratigraphic framework is now proposed. This contribution focusses on the Ordovician-Silurian interval; the aerially restricted Devonian interval will be covered in a separate report.