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TitleGeological setting of the Meadowbank iron-formation-hosted gold deposits, Nunavut
AuthorSherlock, R L; Alexander, R B; March, R; Kellner, J; Barclay, W A
SourceGeological Survey of Canada, Current Research (Online) no. 2001-C11, 2001, 23 pages, (Open Access)
PublisherNatural Resources Canada
Mediapaper; on-line; digital; CD-ROM
RelatedThis publication is contained in Geological Survey of Canada; (2001). Current Research 2001, winter release, Geological Survey of Canada, Current Research no. 2001
File formatpdf
NTS56E/04; 66H/01
AreaBaker Lake
Lat/Long WENS-96.5000 -95.5000 65.2500 65.0000
Subjectseconomic geology; structural geology; regional geology; Archean; iron formations; volcaniclastics; felsic volcanic rocks; quartzites; ultramafic rocks; tuffs; granites; gold; mineral exploration; mineralization; deformation; folds; metamorphism; Woodburn Lake Group; Churchill Province; Meadowbank deposits; Proterozoic; Precambrian
Illustrationssketch maps; photographs; stereonets; cross-sections; tables
Released2001 01 01
AbstractThe Meadowbank gold deposits are located in the Archean Woodburn Lake group of the western Churchill Province. The stratigraphy that hosts the depos- its consists of felsic to intermediate volcaniclastic rocks and interbedded iron-formation. The stratigraphic sequence is polydeformed, with four phases of deformation recognized regionally; two of which have substantially modified the geometry of the strata. The ini- tial phase of deformation was a progressive transposition of the stratigraphy with tight to isoclinal folding that culmi- nated in low-angle, high-strain zones. This progressive deformation event appears to have controlled the distribution of gold mineralization. Overprinting, northeast-southwest, shallow-plunging folds further modified the geometry of the mineralized body.