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TitleEarly Cambrian maximum depositional age for the upper Yelverton Formation, northern Ellesmere Island, Nunavut
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorHadlari, TORCID logo; Matthews, W A
SourceGeological Survey of Canada, Open File 8820, 2021, 15 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediadigital; on-line
File formatpdf
AreaEllesmere Island
Lat/Long WENS -81.5039 -81.5031 81.8789 81.8781
Subjectsgeochronology; paleontology; Science and Technology; Nature and Environment; Lower Cambrian; depositional history; radiometric dating; uranium lead dating; zircon dates; lead lead dates; bedrock geology; lithology; sedimentary rocks; sandstones; igneous rocks; fossils; Yelverton Formation; Grantland Formation; Trilobites; Oldhamia; Phanerozoic; Paleozoic; Cambrian
Illustrationsgeoscientific sketch maps; stratigraphic charts; tables; histograms; plots; bar graphs; Concordia diagrams
ProgramGEM2: Geo-mapping for Energy and Minerals Western Arctic-Beaufort-Northern Yukon
Released2021 09 03
AbstractU-Pb detrital zircon analysis of sandstone samples collected from northern Ellesmere Island during the summer of 2017 provides new depositional age constraints for the Yelverton Formation. Two samples from the same outcrop locality near the top of the formation have yielded an Early Cambrian maximum depositional age (MDA) of 532.1 ± 9.1 Ma. Because the overlying Grantland Formation contains late Early Cambrian trilobites (Oldhamia), we conclude that the uppermost Yelverton Formation is Early Cambrian. A near-depositional age fraction of detrital zircon is interpreted as a proxy for the age of igneous rocks within the Yelverton Formation, which is conservatively estimated as ranging from 551.1 ± 8.9 Ma to 532.1 ± 9.1 Ma.
Summary(Plain Language Summary, not published)
This Open File reports on the geological age of the Yelverton Formation on northernmost Ellesmere Island, Nunavut. These are radiometric ages calculated from isotopic analyses of rock samples collected in the summer of 2017. Prior to this study the age of these rocks were poorly known.

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