STRATI 2013 pp 233-237 | Cite as

High-Resolution Carbon-Isotope Stratigraphy of the Cambrian–Ordovician GSSP: An Enhanced International Correlation Tool

  • Karem AzmyEmail author
  • Gabriella Bagnoli
  • Svend Stouge
  • Uwe Brand
Conference paper
Part of the Springer Geology book series (SPRINGERGEOL)


Isotope curves delineating δ13Ccarb and δ16O variations across the Cambrian–Ordovician boundary at Green Point, western Newfoundland (Canada) are presented. The δ13Ccarb profile of the section reveals a composite (three peaks) negative shift of ~6.0 ‰ and starts immediately at the base of bed 23 of the Broom Point Member. The 13Ccarb profile ties to conodont and graptolite zones and indicates that the lowest occurrence of planktic graptolites in Bed 25 largely coincides with the C. lindstromis.l. conodont Zone, that is, below the ?Iapetognathus conodont Zone.


13Ccarb isotope curve Trace-element geochemistry Green Point Formation Cambrian–Ordovician GSSP 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Karem Azmy
    • 1
    Email author
  • Gabriella Bagnoli
    • 2
  • Svend Stouge
    • 3
  • Uwe Brand
    • 4
  1. 1.Department of Earth SciencesMemorial University of NewfoundlandSt. John’sCanada
  2. 2.Dipartimento di Scienze della TerraUniversità di PisaPisaItaly
  3. 3.Geological MuseumUniversity of CopenhagenCopenhagen KDenmark
  4. 4.Department of Earth SciencesBrock UniversitySt. CatharinesCanada

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