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TitleLake sediment geochemical evaluation of the mineral potential of west-central Baffin Island, Nunavut
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorBonham-Carter, G; Peter, J MORCID logo; Corrigan, DORCID logo; Day, S J AORCID logo; McClenaghan, M BORCID logo; McNeil, R J; Tremblay, TORCID logo; Garrett, R G
SourceGeological Survey of Canada, Open File 8590, 2019, 70 pages (99 sheets), Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
MapsPublication contains 99 maps
Map Info.geochemical, lake sediment geochemistry, 1:1,000,000
Map Info.geochemical, lake water geochemistry, 1:1,000,000
Map Info.geological, mineral deposit weighted sum, 1:1,000,000
Mediaon-line; digital
RelatedThis publication is related to Geochemical reanalysis of archived regional lake sediment samples, central Baffin Island, Nunavut
File formatreadme
File formatpdf (Adobe® Reader®); rtf; docx (Microsoft® Word®); xls (Microsoft® Excel®)
NTS27B; 27C/04; 27C/05; 27C/12; 27C/13; 37A; 37D
AreaBaffin Island; Barnes Ice Cap; Foxe Basin; Ikpik Bay; Wordie Bay
Lat/Long WENS -76.0000 -68.0000 70.0000 68.0000
Subjectseconomic geology; surficial geology/geomorphology; geochemistry; Science and Technology; Nature and Environment; mineral exploration; mineral deposits; mineral potential; mineral occurrences; metals; copper; lead; zinc; nickel; gold; silver; platinum; palladium; germanium; yttrium; major element geochemistry; tin; tungsten; molybdenum; uranium; thorium; zirconium; hafnium; pegmatites; lithium; cesium; tantalum; niobium; fluorine; lake sediment geochemistry; lake water geochemistry; pH patterns; geochemical anomalies; geochemical interpretations; statistical analyses; modelling; models; mass spectrometer analysis; neutron activation analyses; bedrock geology; lithology; igneous rocks; intrusive rocks; granites; monzo-granites; charnockites; leucogranites; granodiorites; monzonites; volcanic rocks; metamorphic rocks; orthogneisses; psammites; semipelites; amphibolites; sedimentary rocks; black shales; siltstones; quartzites; arkoses; iron formations; dolomites; greywackes; turbidites; carbonates; intrusions; batholiths; gossans; glacial history; Wisconsinian glacial stage; glaciation; ice sheets; ice flow; sediment dispersal; dispersal patterns; glacial deposits; glacial landforms; glacial features; tills; glacial striations; crag and tail; glacial erosion; drumlinoids; eskers; moraines; clasts; grain size distribution; correlations; Archean; Piling Group; Astarte River Formation; Bravo Lake Formation; Dewar Lakes Formation; Flint Lake Formation; Longstaff Bluff Formation; Paleoproterozoic; Rae Craton; Little Ice Age; lacustrine sediments; ice-flow directions; platinum group elements; Phanerozoic; Cenozoic; Quaternary; Paleozoic; Precambrian; Proterozoic
Illustrationslocation maps; geoscientific sketch maps; tables; graphs; bar graphs; plots
ProgramGEM2: Geo-mapping for Energy and Minerals GEM Synthesis
Released2019 12 03
AbstractIn 2018, archived Geological Survey of Canada lake sediment samples from west-central Baffin Island, Nunavut were reanalyzed by the Government of Nunavut through the Canada-Nunavut Geoscience Office in cooperation with the Geological Survey of Canada. By re-examining the samples, it was possible to i) analyze for a larger range of elements (66 in 2018 versus 31 in 1998); ii) lower the analytical detection limits with greater data precision; iii) confirm the integrity of the previously reported analytical values; and iv) generate renewed exploration interest across the north. This open file provides an interpretation of the new data set and identifies and describes multi-element geochemical anomalies using principal component analysis and weighted sum modelling of various types of mineral deposits.
Principal component analysis of a large suite of metallic elements shows some clear patterns. The dominant axis, PC1, separates Piling Group sedimentary rock units from igneous Archean and Paleoproterozoic units. Weighted sum modelling was applied for 16 different types of mineral deposit models. In all the models, the anomaly south of Flint Lake is the most obvious. Other highly metalliferous areas of interest include the area east of Flint Lake, further east along the Astarte River and Flint Lake formations at the north edge of the Paleoproterozoic basin, west of Nadluardjuk Lake overlying the Bravo Lake Formation, discrete clusters of samples further east along the Bravo Lake Formation, and a cluster of lake sediment samples overlying the Longstaff Bluff formation.
Summary(Plain Language Summary, not published)
This report describes the geostatistical evaluation of multi-element lake sediment geochemical data for west-central Baffin Island. The samples were re-analyzed in 2018 as part of the GEM program. The report identifies anomalous areas of metal-rich lake sediment that indicate higher mineral potential.

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