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TitleGeology, Circle Lake, Baffin Island, Nunavut
AuthorSanborn-Barrie, M; Young, M
SourceGeological Survey of Canada, Canadian Geoscience Map 5, 2013, 1 sheet,
PublisherNatural Resources Canada
Maps1 map
Map Info.geological, bedrock, structural geology, 1:100,000
ProjectionUniversal Transverse Mercator Projection, zone 20 (NAD83)
Mediadigital; on-line
File formatreadme
File formatrtf; pdf; shp; xml; JPEG2000; jpg
NTS16L/05; 16L/06; 16L/11; 16L/12; 16L/13; 16L/14; 26I/06; 26I/07; 26I/08; 26I/09; 26I/10; 26I/11; 26I/14; 26I/15; 26I/16
AreaCircle Lake; Baffin Island; Kingnait Fiord; Cumberland Peninsula
Lat/Long WENS -65.1000 -63.1667 66.7667 66.1667
Subjectsstructural geology; stratigraphy; bedrock geology; igneous rocks; plutonic rocks; metamorphic rocks; granites; anorthosites; gneisses; pegmatites; diorites; tonalites; volcanic rocks; sedimentary rocks; shales; arenites; komatiites; granodiorites; gabbros; deformation; structural features; faults; folds; metamorphism; Archean; Hoare Bay Group; Qikiqtarjuaq Plutonic Suite; Proterozoic; Precambrian
Illustrationslocation maps
ProgramMultiple Metals - Cumberland Peninsula (Baffin Island, Nunavut), GEM: Geo-mapping for Energy and Minerals
Released2013 05 28
AbstractCumberland Peninsula, eastern Baffin Island, is an under-explored, frontier region with significant diamond, base- and precious-metal potential. Archean (2.97-2.77 Ga) foliated to gneissic tonalitic plutonic rocks with enclaves of >2.77 Ga semipelite, ca. 2.88 Ga gabbro and rare ca. 2.92 Ga metavolcanic rocks form a structural basement, exposed in the south and north. Metasedimentary cover rocks of the Paleoproterozoic Hoare Bay group, exposed from the central to the northeast part of the peninsula, are in tectonic contact with the basement gneisses. The cover sequence includes widespread semipelite-psammite with minor quartzite, marble, silicate- and oxide-facies
iron-formation, chert and graphitic-pyritiferous shale, and two geochemically-distinct strands of ultramafic-mafic metavolcanic rocks of pyroclastic origin. Basement and cover rocks are cut by 1.9-1.88 Ga charnockite, biotite-garnet granodiorite and lesser quartz diorite of the Qikiqtarjuaq plutonic suite. Major structures and medium to high-grade metamorphic assemblages are attributed to polyphase tectonometamorphism between ca. 1.90-1.84 Ga.