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TitleVolcanic relationships and gold mineralization in the Wolverine-Madrid corridor, Hope Bay volcanic belt, Nunavut
AuthorSherlock, R L; Carpenter, R L; Bardoux, M; Flood, E; Kleespies, P
SourceGeological Survey of Canada, Current Research (Online) no. 2002-C9, 2002, 11 pages, (Open Access)
PublisherNatural Resources Canada
Mediapaper; on-line; digital
RelatedThis publication is contained in Geological Survey of Canada; (2002). Current Research 2002, winter release, Geological Survey of Canada, Current Research no. 2002
File formatpdf (Adobe Acrobat Reader)
AreaHope Bay; 2
Lat/Long WENS-107.0000 -106.5000 68.2500 68.0000
Subjects8; regional geology; stratigraphy; structural geology; economic geology; volcanic rocks; igneous rocks; stratigraphic correlations; pillow lavas; basalts; sedimentary rocks; textures; gold; mineral occurrences; deformation; alteration; mafic volcanic rocks; gabbros; mafic intrusive rocks; felsic volcanic rocks; structural features; mineralization; Hope Bay Volcanic Belt; Proterozoic; Precambrian
Illustrationssketch maps; photographs
Released2002 02 15
AbstractMapping in the Wolverine Madrid corridor has outlined a well defined volcanic sequence. This stratigraphy includes a lower variolitic pillowed basalt with interflow sedimentary rocks and an upper suite of nonvariolitic pillowed basalt. Both packages display textures typical of submarine mafic volcanism. Felsic volcanic rocks are interbedded with the nonvariolitic suite, providing excellent stratigraphic markers. Associated felsic porphyry bodies also intrude the nonvariolitic suite. Gold occurs along the corridor and is concentrated in the Madrid area, where the Naartok deposit consists of a complex quartz-vein stockwork developed in strongly altered volcano-sedimentary rocks and synvolcanic gabbro. Naartok is localized in the hanging wall of the deformation zone, a complex structure that juxtaposes different volcanic strata. A second style of mineralization occurs in iron-carbonate-altered high-strain zones that host auriferous quartz-carbonate veins with septa of tourmaline and sheet silicates. These zones are commonly localized at or near lithological contacts.