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TitleGeology, Pangnirtung Fiord, Baffin Island, Nunavut
DownloadDownloads
AuthorJackson, G D; Sanborn-Barrie, M
SourceGeological Survey of Canada, Canadian Geoscience Map 4, 2014, 1 sheet, https://doi.org/10.4095/288928
Year2014
PublisherNatural Resources Canada
Editionprelim.
Documentserial
Lang.English
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; xls
ProvinceNunavut
NTS26I/03; 26I/04; 26I/05; 26I/06; 26I/11; 26I/12; 26J/01; 26J/08; 26J/09
AreaPangnirtung Fiord; Cumberland Peninsula; Baffin Island
Lat/Long WENS-66.5000 -65.1000 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
Image
Released2014 06 12
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.
Summary(Plain Language Summary, not published)
Pangnirtung Fiord map sheet, northwestern Cumberland Peninsula,Baffin Island, exposes spectacular peaks and pinnacles formed from magmas that crystallized during a 20 million year interval, about 1900 to 1879 million years ago. These rocks were subsequently uplifted, and dramatically eroded by ice, water and wind into the steep-faced mountains that exist today. Two main rock types are present: pyroxene-bearing monzogranite-granodiorite and granodiorite to monzogranite. Lesser metasedimentary units, thought to be about 1950 million years old, occur south of Summit Lake. An older package of rocks is thought to occur on the west side of the Weasel River and northeast shore of Avataktoo Bay.
GEOSCAN ID288928