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TitleVein-hosted gold mineralization in the Wilding Lake area, central Newfoundland: structural geology and vein evolution
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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; Kamo, S L
SourceTargeted Geoscience Initiative 5: contributions to the understanding of Canadian gold systems; by Mercier-Langevin, P (ed.); Lawley, C J MORCID logo (ed.); Castonguay, SORCID logo (ed.); Geological Survey of Canada, Open File 8712, 2020 p. 172-191, https://doi.org/10.4095/326020 Open Access logo Open Access
Year2020
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative 5: contributions to the understanding of Canadian gold systems
RelatedThis publication is related to The Wilding Lake gold prospect, central Newfoundland: a lithological and structural synthesis
File formatpdf
ProvinceNewfoundland and Labrador
NTS12A
AreaWilding Lake
Lat/Long WENS -58.0000 -56.0000 49.0000 48.0000
Subjectseconomic geology; structural geology; tectonics; Science and Technology; Nature and Environment; mineral deposits; gold; vein deposits; mineral exploration; mineral potential; ore mineral genesis; mineralization; ore controls; structural controls; exploration guidelines; bedrock geology; basement geology; lithology; sedimentary rocks; conglomerates; arenites; black shales; igneous rocks; volcanic rocks; volcaniclastics; felsic volcanic rocks; mafic volcanic rocks; intrusive rocks; porphyries; granitic rocks; mafic intrusive rocks; structural features; fault zones; faults; shear zones; fractures; joints; folds; quartz veins; sulphides; tectonic setting; tectonic evolution; orogenies; deformation; pressure; fluid flow; shearing; faulting; alteration; magmatism; intrusions; dykes, mafic; plutons; burial history; emplacement; host rocks; unconformities; field relations; kinematic analysis; mineral assemblages; foliation; slickensides; chalcopyrite; tourmaline; models; structural analyses; Dunnage Zone; Exploits Subzone; Rogerson Lake Conglomerate; Peri-Gondwanan Realm; Victoria Lake Sear Zone; Wilding Lake Prospect; Wilding Lake Plutons; Valentine Lake Shea Zone; Red Ochre Complex; Wood Brook Fault; Dog Bay Line; Crippleback Intrusive Suite; Valentine Lake Deposit; Ganderia; Phanerozoic; Paleozoic; Carboniferous; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationsgeoscientific sketch maps; schematic cross-sections; photographs; equal-area stereonet projections; tables
ProgramTargeted Geoscience Initiative (TGI-5) Gold ore systems
Released2020 06 11
AbstractCrustal-scale fault zones in central Newfoundland are being recognized as significant gold-mineralized structures. In particular, a northeast-trending structural corridor in the eastern Dunnage Zone (Exploits subzone), delineated by the Rogerson Lake Conglomerate, contains highly prospective vein-hosted gold deposits. Such mineralized vein systems, exposed near Valentine Lake (Marathon Gold Corp.) and Wilding Lake (Antler Gold Inc.), are products of progressive Paleozoic deformation and fluid-pressure cycling along crustal-scale faults that cut the Late Silurian to Early Devonian Rogerson Lake Conglomerate and underlying Neoproterozoic basement rocks. Well exposed, gold-bearing quartz-vein systems in the Wilding Lake area reveal a kinematic history that involved a main phase of reverse sinistral shearing and subsequent transient phases of horizontal extension, oblique compression, and, at least locally, components of late dextral strike-slip. High-grade gold mineralization is associated with siderite-ankerite-sericite alteration of the host rocks, structurally controlled quartz-vein emplacement, and supergene alteration of pyrite and chalcopyrite. Gold-bearing vein sets contain quartz, pyrite, chalcopyrite, tourmaline, native gold, Ag-poor electrum, bismuth-silver-gold tellurides, rutile, and secondary goethite, malachite, and acanthite. Prospective gold exploration targets in the Wilding Lake area are Late Silurian feldspar porphyry and felsic volcanic rocks overlying the Rogerson Lake Conglomerate, as well as, rheologically favourable Neoproterozoic basement granitoids that may provide a setting similar to that at Valentine Lake.
Summary(Plain Language Summary, not published)
The main objective of phase 5 (2015-2020) of Natural Resources Canada and Geological Survey of Canada's Targeted Geoscientific Initiative (TGI) program was to generate new knowledge, methodologies and models to enhance the exploration industry's ability to detect buried ore deposits. This synthesis volume contains 20 individual papers that discuss craton to deposit-scale characteristics of auriferous deposits, plus some support material pertaining to the TGI-5 Gold project.
GEOSCAN ID326020

 
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