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TitleA Neoproterozoic age for granodiorite underlying Rogerson Lake Conglomerate: confirmed Ganderian basement in the Wilding Lake area, central Newfoundland gold district
AuthorHonsberger, I WORCID logo; Bleeker, WORCID logo; Kamo, S L; Evans, D T W; Sandeman, H A I
SourceNewfoundland and Labrador, Department of Natural Resources, Geological Survey, Open File 12A/07/1774, 2019, 7 pages Open Access logo Open Access
LinksOnline - En ligne
Alt SeriesNatural Resources Canada, Contribution Series 20190054
PublisherGovernment of Newfoundland and Labrador
Documentopen file
Mediaon-line; digital
File formatpdf (Adobe® Reader®)
ProvinceNewfoundland and Labrador
AreaWilding Lake
Lat/Long WENS -57.0000 -56.5000 48.5000 48.2500
Subjectseconomic geology; geochronology; mineral exploration; mineral potential; gold; ore controls; structural controls; bedrock geology; basement geology; lithology; igneous rocks; intrusive rocks; granodiorites; sedimentary rocks; clastics; conglomerates; radiometric dating; uranium lead dating; zircon dates; mass spectrometer analysis; crystallization; intrusions; emplacement; core samples; Neoproterozoic; Gander Terrane; Rogerson Lake Conglomerate; Antler Gold Wilding Lake Property; Crippleback Intrusive Suite; Valentine Lake Pluton; Valentine Lake Fault Zone; Marathon Gold Corp.Valentine Lake project; Phanerozoic; Paleozoic; Silurian; Precambrian; Proterozoic
Illustrationslocation maps; geoscientific sketch maps; cross-sections; tables; photographs; Concordia diagrams
ProgramTargeted Geoscience Initiative (TGI-5) Gold ore systems
Released2019 05 01
AbstractWe report a high-precision CA-ID-TIMS U-Pb zircon crystallization age of 565.0 ± 2.3 Ma for a previously undated granodiorite sample from drillcore on Antler Gold's Wilding Lake property in central Newfoundland. The timing of the granodiorite intrusion overlaps, within error, the emplacement of magmatic rocks of the Neoproterozoic Crippleback Intrusive Suite, including the gold-mineralized Valentine Lake pluton. Such a correlation confirms that the highly prospective crustal-scale Valentine Lake fault zone, and its northeastern extension, cuts Ganderian basement, and further highlights similarities along strike between the Valentine Lake and Wilding Lake areas.
Summary(Plain Language Summary, not published)
We report a new U-Pb zircon age of 565 +/- 2 Ma for an igneous rock underlying conglomerate on a gold property in central Newfoundland. This igneous rock is the same age as the gold-bearing Valentine Lake pluton, which occurs along strike to the southwest.

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