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TitleA structural and stratigraphic framework for the western Davis Strait region
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Associated Datahttps://doi.org/10.4095/330200
 
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorDafoe, L TORCID logo; DesRoches, K J; Williams, G L
SourceGeological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway; by Dafoe, L TORCID logo (ed.); Bingham-Koslowski, NORCID logo (ed.); Geological Survey of Canada, Bulletin 608, 2022 p. 181-218, https://doi.org/10.4095/321831 Open Access logo Open Access
Image
Year2022
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Geological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway
File formatpdf; html
ProvinceNunavut; Newfoundland and Labrador; Northern offshore region
NTS15E; 15F; 15K; 15L; 15M; 15N; 16; 25A; 25H; 25I; 25J; 25O; 25P; 26A; 26B; 26G; 26H
AreaDavis Strait; Baffin Bay; Baffin Island; Cumberland Sound; Frobisher Bay; Labrador; Labrador Sea
Lat/Long WENS -68.0000 -56.0000 68.0000 61.2500
Subjectsregional geology; stratigraphy; structural geology; tectonics; geophysics; paleontology; sedimentology; geochronology; Science and Technology; Nature and Environment; Paleogene; Neogene; Pleistocene; exploration wells; geological history; basin evolution; depositional history; tectonic history; rifting; sea floor spreading; magmatism; intrusions; dykes; sills; volcanism; faulting; deformation; plate margins; plate motions; continental margins; continental shelf; depositional environment; unconformities; bedrock geology; basement geology; lithology; sedimentary rocks; limestones; mudstones; sandstones; shales; conglomerates; siltstones; dolomites; coal; evaporites; anhydrite; gypsum; salt; siderite; claystones; igneous rocks; volcanic rocks; basalts; intrusive rocks; kimberlites; metamorphic rocks; gneisses; structural features; faults; faults, normal; faults, strike-slip; fractures; grabens; systematic stratigraphy; lithostratigraphy; nomenclature; stratigraphic correlations; biostratigraphy; palynology; palynomorphs; micropaleontology; microfossils; fossils; paleoenvironment; geophysical interpretations; magnetic interpretations; seismic interpretations; seismic profiles; seismic reflection surveys; geophysical logging; radiometric dating; core samples; Labrador Margin; Lady Franklin Basin; Labrador Shelf; Saglek Basin; Baffin Shelf; North Ungava Basin; Maniitsoq Basin; Cumberland Basin; Quqaluit Formation; Alexis Formation; Bjarni Formation; Snorri Member; Markland Formation; Freydis Member; Gudrid Formation; Cartwright Formation; Kenamu Formation; Brown Mudstone Member; Leif Member; Mokami Formation; Saglek Formation; Gjoa G-37 Well; Hekja O-71 Well; Ralegh N-18 Well; North American Plate; Greenland Plate; Davis Strait High; Lady Franklin Arch; West Greenland Margin; Phanerozoic; Cenozoic; Quaternary; Tertiary; Mesozoic; Cretaceous; Paleozoic; Precambrian
Illustrationslocation maps; geoscientific sketch maps; stratigraphic charts; seismic profiles; lithologic sections; geophysical logs; profiles; tables
ProgramGEM2: Geo-mapping for Energy and Minerals Baffin Region Atlas
Released2022 08 15
AbstractWestern Davis Strait lies within the Labrador-Baffin Seaway rift system, which began forming in the Early Cretaceous as Greenland separated from North America. At chron C27n (Danian), regional seafloor spreading began, as well as significant magmatism. The opening direction changed from southeast-northwest to more north-south in the Thanetian-Ypresian between chrons C25n and C24n, resulting in significant strike-slip motion through the Davis Strait region until seafloor spreading ended at chron C13, near the Eocene-Oligocene boundary. This tectonism has influenced the stratigraphy preserved in basins within western Davis Strait, including confirmed Cretaceous successions in the Lady Franklin Basin and Cumberland Sound; however, regional overprinting of Paleocene-Eocene volcanic rocks obscures pre-rift basement and possible older strata over much of the region. Three industry wells and several seabed samples of bedrock help constrain the stratigraphic distribution of Cretaceous and Cenozoic strata based on the lithostratigraphy of the well sampled Labrador margin.
Summary(Plain Language Summary, not published)
The Western Davis Strait region forms the west-central margin of the Labrador-Baffin rift system and preserves a unique stratigraphy relating to the tectonic history of the region. This includes both extension as Greenland separated from North America starting in the Cretaceous and also extensive strike-slip motion starting in the Paleocene when there was a change in the opening direction between the tectonic plates. Three industry well and a seismic grid over the region provide key datasets to understand the structure and stratigraphy preserved in basins within the region. This paper summaries the previous work in the area, but also provides new insights into the lithostratigraphy, as well as new seismic mapping of key time intervals.
GEOSCAN ID321831

 
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