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TitleLithological and structural setting of structurally controlled gold mineralization in the Wilding Lake region, central Newfoundland
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHonsberger, I WORCID logo; Bleeker, WORCID logo; Sandeman, H A I; Evans, D T W
SourceTargeted Geoscience Initiative: 2018 report of activities; by Rogers, N (ed.); Geological Survey of Canada, Open File 8549, 2019 p. 59-69, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative: 2018 report of activities
File formatpdf
ProvinceNewfoundland and Labrador
AreaWilding Lake
Lat/Long WENS -58.0000 -56.0000 49.0000 48.0000
Subjectseconomic geology; regional geology; structural geology; mineral deposits; gold; epigenetic deposits; mineral exploration; mineral potential; ore mineral genesis; mineralization; ore controls; structural controls; bedrock geology; lithology; sedimentary rocks; conglomerates; igneous rocks; volcanic rocks; volcaniclastics; felsic volcanic rocks; intrusive rocks; structural features; faults; shear zones; fractures; folds; quartz veins; sulphides; tectonic setting; deformation; slickensides; foliation; lineations; kinematic analysis; Red Indian Line; Victoria Lake Sear Zone; Rogerson Lake Conglomerate; Valentine Lake Thrust Fault; Red Ochre Complex; Elm Zone; Antler Property; Dunnage Zone; Gander Zone; Phanerozoic; Paleozoic; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationsgeoscientific sketch maps; cross-sections, structural; photographs
ProgramTargeted Geoscience Initiative (TGI-5) Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5) Gold ore systems - tectonic drivers and conduits
Released2019 03 01
AbstractThe structurally controlled central Newfoundland gold belt is emerging as one of the next significant mining jurisdictions in Canada. Gold mineralization is associated with crustal-scale faults that preserve synorogenic conglomerates, similar to the setting of orogenic gold in the Archean Abitibi greenstone belt. Recent exploration in the Wilding Lake region exposed a system of auriferous quartz veins hosted within sedimentary and volcanic rocks. Detailed lithological and structural documentation of these newly exposed zones was conducted to examine controls on gold mineralization and place the vein system into a regional context.
Field data demonstrate that the main 'Elm' quartz vein extends for approximately 230 m along strike, is up to 2 m wide and cuts the conglomerate host within an oblique sinistral shear zone that accommodated north-northeast-directed thrusting. An early set of moderately dipping extensional quartz veins, consistent with oblique sinistral shear, emanate from the main vein. A later, more steeply dipping set of extensional quartz veins crosscut the main vein and the earlier vein set, and are consistent with a component of horizontal extension. Chalcopyrite and malachite occur locally in the early vein set, but are more abundant overall within the younger vein set. A nearly conjugate set of steeply dipping extension fractures crosscut the main vein and the two vein sets. These fractures are filled typically with vuggy quartz and unaltered and altered sulphides. Field data are consistent with progressive deformation characterized by early oblique compressional sinistral shear and subsequent components of subhorizontal extension and minor dextral strike-slip.
Summary(Plain Language Summary, not published)
The Targeted Geoscience Initiative (TGI) is directed towards providing next generation knowledge and methods to facilitate more effective targeting of buried mineral deposits. The program aims to enhance the effectiveness of exploration for Canada's major mineral systems by resolving foundational geoscience problems that constrain the geological processes responsible for the liberation metals from their source region, transportation of these ore metals and control their eventual deposition. TGI supports projects on gold, Ni-Cr-PGE, porphyry-style mineralization, uranium and volcanic- and sedimentary-hosted base metal mineralization ore systems, with each project divided into subprojects focused on resolving specific knowledge gaps by integrating data and studies from multiple sites across Canada. Herein, we present interim results and interpretations from a selection of the research activities currently being conducted under the auspices of TGI.

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