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TitleArchean and Paleoproterozoic cratonic rocks of Baffin Island [advance contribution]
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorSt-Onge, M R; Scott, D J; Rayner, NORCID logo; Sanborn-Barrie, MORCID logo; Skipton, D R; Saumur, B M; Wodicka, NORCID logo; Weller, O M
SourceGeological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway [in press]; by Dafoe, L TORCID logo (ed.); Bingham-Koslowski, N (ed.); Geological Survey of Canada, Bulletin 608, 2020 p. 1-29, https://doi.org/10.4095/321824 Open Access logo Open Access
Image
Year2020
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediaon-line; digital
File formatpdf; html
ProvinceNunavut
NTS16; 25G; 25H; 25I; 25J; 25K; 25L; 25M; 25N; 25O; 25P; 26; 27; 35P; 36; 37; 38A; 38B; 38C; 38D; 47C; 47D; 47E; 47F; 47G; 47H; 48A; 48B; 48C; 48D; 57E; 57H; 58A; 58D
AreaBaffin Island
Lat/Long WENS -90.5000 -60.0000 74.0000 61.0000
Subjectsregional geology; stratigraphy; structural geology; tectonics; geochronology; geochemistry; Science and Technology; Nature and Environment; craton; terranes; sutures; bedrock geology; basement geology; lithology; mafic rocks; ultramafic rocks; metamorphic rocks; gneisses; orthogneisses; metasedimentary rocks; pelites; semipelites; psammites; quartzites; marbles; metavolcanic rocks; mafic metavolcanic rocks; sedimentary rocks; iron formations; igneous rocks; intrusive rocks; monzo-granites; granodiorites; diorites; gabbros; hornblendites; tonalites; felsic intrusive rocks; volcanic rocks; andesites; rhyolites; volcaniclastics; mafic volcanic rocks; lava flows; basalts; structural features; folds; tectonic setting; plate margins; continental margins; tectonic history; magmatism; magmatic arcs; intrusions; batholiths; plutons; sills; emplacement; orogenies; orogenic regions; deformation; accretion; rifting; crustal evolution; crustal shortening; basins; unconformities; radiometric dating; uranium lead dating; zircon dates; isotopic studies; carbon isotopes; field relations; tectonostratigraphic zones; Archean; Paleoproterozoic; Trans-Hudson Orogen; Rae Craton; Mary River Group; Piling Group; Dewar Lakes Formation; Flint Lake Formation; Bravo Lake Formation; Astarte River Formation; Longstaff Bluff Formation; Hoare Bay Group; Qikiqtarjuaq Plutonic Suite; Meta Incognita Microcontinent; Lake Harbour Group; Blandford Bay Assemblage; Lona Bay Sequence; Schooner Harbour Sequence; Frobisher Suite; Cumberland Batholith; Narsajuaq Terrane; Churchill Domain; Superior Craton; Foxe Fold Belt; Dorset Fold Belt; Cape Smith Belt; Povungnituk Group; Laurentia; Baffin Suture; Precambrian; Proterozoic
Illustrationsindex maps; geoscientific sketch maps; photographs
ProgramGEM2: Geo-mapping for Energy and Minerals Baffin Region Atlas
Released2020 05 21
AbstractArchean and Paleoproterozoic cratonic rocks of Baffin Island define four stacked structural levels that are juxtaposed within the middle Paleoproterozoic Trans-Hudson Orogen. From north to south, and highest to lowest structural level, these comprise:1) the Archean Rae Craton, unconformably overlain along its southern margin by middle Paleoproterozoic supracrustal cover (Piling Group) and stratigraphically similar units of the Hoare Bay Group on Cumberland Peninsula; 2) Archean to middle Paleoproterozoic metaplutonic units and middle Paleoproterozoic metasedimentary cover (Lake Harbour Group), collectively termed the 'Meta Incognita microcontinent'; 3) middle Paleoproterozoic orthogneiss, interpreted as a deformed arc-magmatic terrane (Narsajuaq terrane) or alternatively as Narsajuaq-age intrusions emplaced in the Meta Incognita microcontinent; and 4) Archean orthogneiss, interpreted as the northern continuation of the lower-plate Superior Craton, and associated middle Paleoproterozoic continental-margin supracrustal cover (Povungnituk Group).
Summary(Plain Language Summary, not published)
Archean and Paleoproterozoic rocks of Baffin Island define four stacked tectonic domains that were juxtaposed during the middle Paleoproterozoic Trans-Hudson orogen. From north to south, and highest to lowest structural level, these comprise: a) the upper-plate Rae craton, unconformably overlain along its southern margin by middle Paleoproterozoic supracrustal cover (Piling Group), and stratigraphically similar units of the Hoare Bay Group on Cumberland Peninsula; b) Archean to middle Paleoproterozoic metaplutonic units and middle Paleoproterozoic tectonostratigraphic cover (Lake Harbour Group), collectively termed the 'Meta Incognita microcontinent'; c) Middle Paleoproterozoic orthogneiss, interpreted as a deformed arc-magmatic terrane (Narsajuaq terrane) or alternatively as Narsajuaq-age intrusions emplaced in Meta Incognita microcontinent; and d) Archean orthogneiss, interpreted as the northern continuation of the lower-plate Superior craton and associated middle Paleoproterozoic continental margin supracrustal cover (Povungnituk Group).
GEOSCAN ID321824

 
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