| Title | Current research, part C, Canadian Shield / Recherches En Cours, Partie C, Bouclier Canadien |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Geological Survey of Canada |
| Source | Geological Survey of Canada, Paper no. 92-1C, 1992, 276 pages, https://doi.org/10.4095/132842  Open Access |
| Image |  |
| Year | 1992 |
| Document | serial |
| Lang. | English; French |
| Media | paper; on-line; digital |
| Related | This publication contains the following
publications |
| File format | pdf |
| Province | Quebec; Saskatchewan; Ontario; Northwest Territories; Nunavut; Newfoundland and Labrador |
| NTS | 24E; 24J; 24K; 24L; 24P; 25C; 25D; 25E; 31J; 31P; 32E; 32F; 34; 35; 41I; 52B; 55; 56; 65; 66; 74O; 74P; 75C; 75L; 76; 78B; 85N; 85O; 86B; 86C; 86J; 86O; 96K; 96L; 96M; 96N; 97A |
| Area | Meliadine Lake; Barbour Bay; Matagami; Kovik Bay; Cap Wolstenholme; Brock Inlier; Elliot Lake; Exlipse Harbour; Ungava Peninsula; Lac Nominingue; Lac Leclair; Sudbury; Thelon Lake; Baker Lake; Montauban;
Bray Lake; Montgomery Lake; Ameto Lake; Colville Hills; Tweed Lake; Hepburn Island; Snowdrift; Hill Island Lake; Hump Lake; Laughland Lake; Basler Lake; Abitibi |
| Lat/Long WENS | -128.0000 -64.0000 73.0000 46.0000 |
| Subjects | economic geology; geochemistry; geochronology; paleontology; sedimentology; stratigraphy; tectonics; geophysics; mineralogy; igneous and metamorphic petrology; surficial geology/geomorphology;
structural geology; plutonic rocks; volcanic rocks; igneous rocks; metamorphic rocks; radiometric dates; depositional environment; lithology; analyses; geochemical analyses; faults; folds; shear zones; structural features; tectonic elements;
metallogeny; deformation; metamorphism; mineral deposits; mineral assemblages; petrographic analyses; earthquakes; mineralization; seismic surveys; geophysical surveys; isotopes; Ungava Orogen; Shaler Group; Torngat Orogen; Central Metasedimentary
Belt; Muskox Intrusion; Cape Smith Belt; Amundsen Basin; Southern Province; Grenville Province; Grenville Front; Superior Province; Thelon Lake Basin; Baker Lake Basin; Slave Province; Snare Group; Prince Albert Group; Wopmay Orogen; Precambrian;
Proterozoic; Paleozoic |
| Illustrations | Concordia diagrams; tables; photomicrographs; seismic profiles; stratigraphic columns; aerial photographs; cross-sections; photographs; sketch maps; rose diagrams; analyses; stereonets;
graphs |
| Released | 1992 02 01; 2013 03 18 |
| Abstract | The Meliadine Lake area is underlain by an Archean (ca 2.63 Ga) supracrustal sequence which forms a regional scale, Archean F2 syncline. Along the north limb, three sets of pre-F2 mesoscopic folds are
present in a turbidite-hosted, locally auriferous oxide ironjormation. An assemblage of biotite + chlorite in silicate-rich layers of the iron-formation is overprinted by random intergrowths of fine grained grunerite + hornblende + carbonate with
pyrrhotite, and coarse hornblende +!- biotite with arsenopyrite. Textures suggest that gold mineralization is associated with S, Ca and C02 metasomatism, and is controlled by the oungest set of pre-F 2/olds. The Archean lithologies in the Barbour Bay
region are dominated by polydeformed quartzofeldspathic gneiss, migmatite, granitoid plutons, paragneiss, amphibolite, and garnetiferous, silicate ironjormation. Folded high-strain zones containing tectonized remnants of anorthosite, gabbro, and
pegmatite transect the gneisses. Four sets of folds and one event of amphibolite grade metamorphism are recognized. The distribution of lithologies is controlled by west-plunging F 3Jolds. The mapping indicates the presence of flat-lying,
crustal-scale tectonic slabs. |
| GEOSCAN ID | 132842 |
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