Correlation of graptolite biozones, chitinozoan biozones, and carbon isotope curves through the Hirnantian

• Michael J. Melchin ^[1] ; Chris Holmden ^[2] ; S. Henry Williams ^[3]
  1. [1] St. Francis Xavier University

     St. Francis Xavier University

     Canadá

     
  2. [2] University of Saskatchewan

     University of Saskatchewan

     Canadá

     
  3. [3] Petro–Canada, Calgary AB, Canada

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• Localización: Serie correlación geológica, ISSN-e 1666-9479, ISSN 1514-4186, Vol. 17, Nº. 1, 2003
• Idioma: inglés
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• Resumen

  • New biostratigraphic and chemostratigraphic data are emerging from Dob’s Linn, Scotland, Anticosti Island, and Arctic Canada, that yield insights into the relative timing of the carbon isotope excursions and the graptolite biostratigraphy in those regions, as well as globally. These results cast doubt on the hypothesis that the timing and form of a composite curve based on the Baltic succession can be used a benchmark for global correlation through the Hirnantian (Brenchley et al., 2003).