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TitleProvenance of Quaternary sands on Flemish Cap, offshore Island of Newfoundland
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorPe-Piper, G; Piper, D J WORCID logo; Kormann, S M; Imperial, A
SourceGeological Survey of Canada, Open File 8359, 2018, 206 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatreadme
File formatpdf (Adobe® Reader®); rtf; xlsx (Microsoft® Excel®)
ProvinceEastern offshore region; Newfoundland and Labrador
AreaFlemish Cap; Atlantic Ocean; Flemish Pass
Lat/Long WENS -46.5000 -44.0000 48.0000 47.5000
Subjectsmarine geology; surficial geology/geomorphology; mineralogy; marine sediments; sands; turbidites; shoals; provenance; source areas; mineral assemblages; garnet; amphibole; pyroxene; feldspar; epidote; zircon; monazite; tourmaline; spinel; chromite; sediment dispersal; dispersal patterns; erosion; ice rafting; heavy mineral analyses; scanning electron microscope analyses; spectroscopic analyses; bedrock geology; lithology; sedimentary rocks; sandstones; metamorphic rocks; igneous rocks; intrusive rocks; volcanic rocks; basalts; basement geology; Archean; Canadian Shield; Avalonia; Appalachian Province; Phanerozoic; Cenozoic; Quaternary; Tertiary; Mesozoic; Cretaceous; Precambrian; Proterozoic
Illustrationslocation maps; pie charts; plots; bar graphs; ternary diagrams; geoscientific sketch maps; tables; photomicrographs
ProgramOffshore Geoscience
ProgramProgram of Energy Research and Development (PERD)
ProgramNSERC Natural Sciences and Engineering Research Council of Canada
Released2018 09 20
AbstractThe objectives of this study were (a) to determine if Flemish Cap has a distinctive heavy mineral assemblage that would allow turbidites from Flemish Cap to be distinguished in Flemish Pass; and (b) to evaluate the role of local erosion versus ice-rafting in the evolution of the heavy mineral assemblages in the widespread sands on Flemish Cap. Heavy minerals were separated from four widely spaced surface sands on Flemish Cap and from one ~16 ka turbidite sand in Flemish Pass. Heavy minerals were identified from polished thin sections using a scanning electron microscope with energy dispersive spectroscopy. The dominant source of heavy minerals in the sand ridge fields of Flemish Cap is from ice-rafting from the Canadian Shield and Greenland. Erosion of Avalonian basement rocks on the Flemish Cap shoals was the dominant source of sand on the rocky shoals. Erosion of Tertiary and Cretaceous sandstones was not a significant source for heavy minerals based on the rarity of zircon, monazite, tourmaline and spinel/chromite. The 16 ka turbidite sand in eastern Flemish Pass has a similar varietal heavy mineral assemblage as the sand ridge fields of Flemish Cap.
Summary(Plain Language Summary, not published)
The study of heavy minerals from Flemish Cap demonstrates that some are derived from erosion of the shoals but most result from ice-rafting particularly from Greenland. The data confirm that young sand beds in Flemish Pass are derived from Flemish Cap.

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