| Title | Lake sediment geochemical evaluation of the mineral potential of west-central Baffin Island, Nunavut |
| Download | Downloads |
| |
| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Bonham-Carter, G; Peter, J M ; Corrigan, D; Day, S J A; McClenaghan, M B; McNeil, R J; Tremblay, T; Garrett, R G |
| Source | Geological Survey of Canada, Open File 8590, 2019, 70 pages (99 sheets), https://doi.org/10.4095/321091  Open Access |
| Image |  |
| Year | 2019 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Maps | Publication 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 |
| Media | on-line; digital |
| Related | This publication is related to Geochemical reanalysis of
archived regional lake sediment samples, central Baffin Island, Nunavut |
| File format | readme
|
| File format | pdf (Adobe® Reader®); rtf; docx (Microsoft® Word®); xls (Microsoft® Excel®) |
| Province | Nunavut |
| NTS | 27B; 27C/04; 27C/05; 27C/12; 27C/13; 37A; 37D |
| Area | Baffin Island; Barnes Ice Cap; Foxe Basin; Ikpik Bay; Wordie Bay |
| Lat/Long WENS | -76.0000 -68.0000 70.0000 68.0000 |
| Subjects | economic 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 |
| Illustrations | location maps; geoscientific sketch maps; tables; graphs; bar graphs; plots |
| Program | GEM2: Geo-mapping for Energy and Minerals GEM Synthesis |
| Released | 2019 12 03 |
| Abstract | In 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. |
| GEOSCAN ID | 321091 |
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