GEOSCAN Search Results: Fastlink


TitleBedrock geology and economic potential of the Archean Mary River group, northern Baffin Island, Nunavut
AuthorJohns, S M; Young, M D
SourceGeological Survey of Canada, Current Research (Online) no. 2006-C5, 2006, 13 pages; 1 CD-ROM, (Open Access)
PublisherNatural Resources Canada
Mediaon-line; CD-ROM; digital
File formatpdf (Adobe Acrobat Reader)
NTS37C/09; 37C/10; 37C/11; 37C/12; 37C/13; 37C/14; 37C/15; 37C/16; 37D/09; 37D/10; 37D/11; 37D/12; 37D/13; 37D/14; 37D/15; 37D/16; 37E; 37F; 37G; 37H; 38A/01; 38A/02; 38A/03; 38A/04; 38B/01; 38B/02; 38B/03; 38B/04
Areanorthern Baffin Island; Eqe Bay; Freshney River; Freshney Lakes; Isortoq River; Long Lake; Magnetite Hill; Beacon Hill; Rimrock Lake; Barnes Ice Cap
Lat/Long WENS-80.0000 -72.0000 72.1667 69.5000
Subjectsregional geology; structural geology; stratigraphy; economic geology; geochemistry; geochronology; Archean; Paleocene; bedrock geology; deformation; mineral potential; geological history; structural analysis; structural features; faults; faults, normal; faults, thrust; bedding; foliation; folds; lineations; metamorphic rocks; igneous rocks; plutonic rocks; sedimentary rocks; gneisses; psammites; amphibolites; quartzites; migmatites; Algoma type iron formations; iron formations; silicate rocks; oxides; dacites; ultramafic rocks; mafic rocks; gabbroic composition; intrusions; sills; dykes; metamorphism; metamorphic facies; amphibolite facies; granulite facies; stratigraphic correlations; isograds; fabric analyses; mineral deposits; metals; magnetite; gold; molybdenum; quartz veins; nickel; copper; magmatic deposits; sulphide deposits; mineralization; greenstone belts; basins; volcanic rocks; granitic rocks; charnockites; granites; radiometric dating; uranium lead dating; zircon dates; iron ores; lead zinc deposits; carving stone, commodity; quartz-feldspar gneisses; komatiites; basalts; diabases; monzo-granites; monzonites; granodiorites; tonalites; porphyries; gabbros; tuffs; carbonate rocks; marbles; felsic rocks; conglomerates; aeromagnetic interpretation; semipelites; felsenmeer; Mary River Group; Hudsonian Orogeny; Churchill Province; Rae Domain; Committee Fold Belt; Isortoq Fault Zone; Woodburn Lake Group; Piling Group; Central Borden Fault; Nina Bang Fault; White Bay Fault; Franklin Diabase; Franklin Dykes; Prince Albert Group; platinum group elements (PGE); dextral faults; thermal ionization mass spectrometry; SHRIMP; wackes; banded iron formations; calc-silicate rocks; Phanerozoic; Cenozoic; Tertiary; Precambrian; Proterozoic
Illustrationssketch maps; stratigraphic sections; photographs; geophysical images
ProgramNorth Baffin Project
Released2006 12 01
AbstractBedrock mapping and prospecting in northern Baffin Island, including parts of NTS map areas 37 E, F, G, and H, has redefined interpretations of the stratigraphy and structure of the Archean Mary River group, surrounding gneiss, and intrusions. In the study area, the Mary River group includes psammite and sedimentary migmatite, amphibolite, ±psammite and sedimentary migmatite, Algoma-type silicate and oxide-facies iron-formation, ±dacite, ±psammite, and quartzite, intruded by late ultramafic and gabbroic sills and dykes. Three episodes of penetrative deformation are recognized and Archean and Proterozoic rocks underwent amphibolite- to granulite-facies regional metamorphism during the ca. 1.8 Ga Hudsonian Orogeny. The youngest regional event, defined as D3, folded metamorphic isograds and pre-D3 fabrics. New economic mineral prospects include 20mthick magnetite beds within iron-formation, and visible gold and molybdenum in quartz veins. The area also has potential for Ni-Cu-PGE magmatic sulphide mineralization in mafic and ultramafic sills.