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TitleFactors controlling intrusion-related mineralization in Cape Breton Island, Nova Scotia: a comparison of Silurian-Devonian plutons in Ganderia and Avalonia
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorMoning, A; Barr, S M; White, C E; Sombini dos Santos, G; van Rooyen, D
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 1; by Rogers, N (ed.); Geological Survey of Canada, Open File 8358, 2018 p. 31-35, https://doi.org/10.4095/306402 Open Access logo Open Access
Year2018
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication is contained in Targeted Geoscience Initiative: 2017 report of activities, volume 1
File formatpdf
ProvinceNova Scotia
NTS11F/09; 11F/10; 11F/11; 11F/14; 11F/15; 11F/16; 11G/13; 11J/04; 11J/05; 11K; 11N/01; 11N/02
AreaCanadian Appalachians; Cape Breton Island; Gillis Mountain; Leonard MacLeod Brook
Lat/Long WENS -61.5000 -59.5000 47.2500 45.5000
Subjectseconomic geology; tectonics; structural geology; mineralogy; geochemistry; geophysics; geochronology; mineral deposits; mineral exploration; mineral potential; porphyry deposits; copper; molybdenum; ore mineral genesis; ore controls; structural controls; mineralization; sulphides; host rocks; geochemical analyses; trace element analyses; major element analyses; isotopic studies; radiometric dating; neodymium samarium dates; drill core analyses; petrographic analyses; x-ray fluorescence analyses; geophysical logging; tectonic setting; intrusions; plutons; emplacement; bedrock geology; lithology; igneous rocks; plutonic rocks; granitic rocks; granites; diorites; gabbros; monzo-granites; volcanic rocks; sedimentary rocks; metamorphic rocks; orthogneisses; mylonites; mineral assemblages; structural features; shear zones; Ganderia; Aspy Terrane; Avalonia; Mira Terrane; Gillis Mountain Pluton; Bras-d'Or Terrane; Appalachian Orogen; Sarach Brook Metamorphic Suite; MacRae Brook Formation; MacMillan Mountain Formation; Phanerozoic; Paleozoic; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationsgeoscientific sketch maps
ProgramTargeted Geoscience Initiative (TGI-5) Knowledge Management Coordination
ProgramTargeted Geoscience Initiative (TGI-5) Porphyry systems
Released2018 01 19
AbstractThe Devonian Gillis Mountain granitoid pluton in the Avalonian Mira terrane of southern Cape Breton Island hosts porphyry-style copper-molybdenum mineralization. In contrast, plutons of assumed similar age and containing similar rock types in the Leonard MacLeod Brook area of the Ganderian Aspy terrane of northern Cape Breton Island are not known to be mineralized. Hence a comparison of features such as host rocks, depth of emplacement, mineralogy, and chemical composition between plutons in these two areas may provide insight about factors controlling porphyry -style mineralization. During the summer of 2017, existing samples from the Gillis Mountain pluton were re-analyzed to obtain a modern set of trace element data, and previously unstudied drill core from the pluton was sampled for petrological study. Plutons in the Leonard MacLeod Brook area were mapped and sampled for petrological studies and dating, now in progress.
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.
GEOSCAN ID306402

 
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