| Title | Archean and Paleoproterozoic cratonic rocks of Baffin Island |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | St-Onge, M R; Scott, D J; Rayner, N ; Sanborn-Barrie, M; Skipton, D R; Saumur, B
M; Wodicka, N; Weller, O M |
| Source | Geological synthesis of Baffin Island (Nunavut) and the Labrador-Baffin Seaway; by Dafoe, L T (ed.); Bingham-Koslowski, N (ed.); Geological Survey of Canada, Bulletin 608, 2020 p. 25-53, https://doi.org/10.4095/321824  Open Access |
| Image |  |
| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | on-line; digital |
| Related | This publication is contained in Geological synthesis of
Baffin Island (Nunavut) and the Labrador-Baffin Seaway |
| File format | pdf; html |
| Province | Nunavut |
| NTS | 16; 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 |
| Area | Baffin Island |
| Lat/Long WENS | -90.5000 -60.0000 74.0000 61.0000 |
| Subjects | regional 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 |
| Illustrations | index maps; geoscientific sketch maps; photographs |
| Program | GEM2: Geo-mapping for Energy and Minerals Baffin Region Atlas |
| Released | 2020 05 21; 2022 08 15 |
| Abstract | Archean 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 ID | 321824 |
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