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The relationship between the iridium anomaly and palynological floral events at three Cretaceous-Tertiary boundary localities in western Canada
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1987
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Palaeo-environmental ReconstructionIridium-peak AnomalyWestern CanadaEvolutionary BiologyIridium AnomalyCretaceous PeriodVegetation HistoryPalynological Floral EventsCretaceous-paleogene BoundaryPaleobotanyEarth ScienceGsa Bulletin 1987
Research Article| September 01, 1987 The relationship between the iridium anomaly and palynological floral events at three Cretaceous-Tertiary boundary localities in western Canada JOHN F. LERBEKMO; JOHN F. LERBEKMO 1University of Alberta, Department of Geology, Edmonton, Alberta T6G 2E3, Canada Search for other works by this author on: GSW Google Scholar ARTHUR R. SWEET; ARTHUR R. SWEET 2Geological Survey of Canada, 3303 33 Street N. W., Calgary, Alberta T2L 2E7, Canada Search for other works by this author on: GSW Google Scholar ROBERT M. ST. LOUIS ROBERT M. ST. LOUIS 3University of Alberta, Department of Geology, Edmonton, Alberta T6G 2E3, Canada Search for other works by this author on: GSW Google Scholar GSA Bulletin (1987) 99 (3): 325–330. https://doi.org/10.1130/0016-7606(1987)99<325:TRBTIA>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation JOHN F. LERBEKMO, ARTHUR R. SWEET, ROBERT M. ST. LOUIS; The relationship between the iridium anomaly and palynological floral events at three Cretaceous-Tertiary boundary localities in western Canada. GSA Bulletin 1987;; 99 (3): 325–330. doi: https://doi.org/10.1130/0016-7606(1987)99<325:TRBTIA>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Profiles illustrating the abundance of iridium and the changes in the relative abundances of major groups within the palynoflora are given for three localities from western Canada. The peak abundance of iridium ranges from 1.35 to 5.60 ppb and corresponds to the base of a coal and to a floral-extinction event at the three localities. Immediately above the iridium-peak anomaly, angiosperm pollen is conspicuous in the assemblage, in contrast to the fern-spore spike described for sections in the mid-continental United States and at the Morgan Creek locality in south-central Saskatchewan. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.