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TitleStratigraphy of the Labrador margin: a synthesis and new perspectives
Associated Data
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorDafoe, L TORCID logo; Dickie, K; Williams, G L; McCartney, TORCID logo
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. 137-180, Open Access logo Open Access
PublisherNatural Resources Canada
Mediaon-line; digital
RelatedThis publication is contained in Geological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway
File formatpdf; html
ProvinceNewfoundland and Labrador; Northern offshore region
NTS3; 13I; 13J; 13N; 13O; 13P; 14C; 14F; 14K; 14L; 14M; 14N; 15C; 15D; 15E; 15F; 25A; 25H
AreaLabrador; Labrador Sea
Lat/Long WENS -66.0000 -44.0000 61.2500 53.0000
Subjectsregional geology; stratigraphy; paleontology; structural geology; tectonics; geophysics; geochronology; Science and Technology; Nature and Environment; Paleogene; Neogene; Pleistocene; Archean; exploration wells; geological history; depositional history; tectonic history; rifting; sea floor spreading; magmatism; volcanism; intrusions; sills; faulting; plate margins; continental margins; continental shelf; basin evolution; depositional environment; continental crust; oceanic crust; craton; terranes; mantle; unconformities; bedrock geology; basement geology; lithology; sedimentary rocks; clastics; shales; sandstones; carbonates; conglomerates; coal; claystones; siltstones; mudstones; limestones; dolomites; evaporites; anhydrite; gypsum; salt; siderite; igneous rocks; volcanic rocks; basalts; anorthosites; tuffs; metamorphic rocks; gneisses; hornfels; structural features; faults; faults, normal; fractures; grabens; systematic stratigraphy; lithostratigraphy; nomenclature; stratigraphic correlations; biostratigraphy; palynology; micropaleontology; microfossils; fossils; paleoenvironment; geophysical interpretations; magnetic interpretations; seismic interpretations; seismic profiles; seismic reflection surveys; geophysical logging; radiometric dating; potassium argon dating; core samples; serpentinization; Labrador Margin; Labrador Shelf; Saglek Basin; Hopedale Basin; Labrador Sea Basin; 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; Cartier D-70 Well; Gudrid H-55 Well; Herjolf M-92 Well; Snorri J-90 Well; Freydis B-87 Well; Bjarni H-81 Well; Leif M-48 Well; Skolp E-07 Well; Karlsefni A-13 Well; North Atlantic Craton; Makkovik Orogen; Grenville Province; Phanerozoic; Cenozoic; Quaternary; Tertiary; Mesozoic; Cretaceous; Paleozoic; Ordovician; Precambrian; Proterozoic
Illustrationslocation maps; geoscientific sketch maps; stratigraphic charts; lithologic sections; geophysical logs; profiles; seismic profiles; tables
ProgramGEM2: Geo-mapping for Energy and Minerals Baffin Region Atlas
Released2022 08 15
AbstractThe Labrador Sea formed during rifting between North America and Greenland beginning in the Early Cretaceous, with subsequent seafloor spreading from the Maastrichtian (chron C31) to Early Paleocene (chron C27n) that ended by chron C13 (earliest Oligocene). Early Cretaceous rifting resulted in accumulation of Alexis Formation basalt units and Bjarni Formation nonmarine and marginal marine clastic rocks. In the Late Cretaceous, extension focused further offshore as sag basin conditions formed across the shelf, with a basinwide transgression of Markland Formation shale and localized Freydis Member sandstone development. A Middle Paleocene to Early Eocene regression formed Gudrid Formation shoreline sandstone units, with correlative Cartwright Formation marine shale units. This was followed by an Early Eocene transgression of the Kenamu Formation and Middle Eocene Leif Member shoreline development. During the Late Eocene through Pleistocene, transgression took place once again at the base of the Mokami Formation, with subsequent development of the partly correlative shallow-marine sandstone units of the Saglek Formation.
Summary(Plain Language Summary, not published)
This paper presents a detailed summary of previous work on the Labrador margin in regards to the stratigraphy. We further present new information by integrating recent studies with seismic mapping.

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