Regional and global chemostratigraphic correlation of the early Neoproterozoic Shaler Supergroup, Victoria Island, Northwestern Canada

D. S. Jones, Adam C. Maloof, M. T. Hurtgen, R. H. Rainbird, D. P. Schrag

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

High resolution inorganic carbon isotope stratigraphy provides a new tool for correlating the Neoproterozoic Shaler Supergroup with the Mackenzie Mountains Supergroup. Previous stratigraphic studies established a widely accepted basis for correlation between the two supergroups. This contribution introduces a revised, testable hypothesis for the correlation of the Shaler and Mackenzie Mountains supergroups, based on matching distinctive features in the Shaler Supergroup δ13C data with the previously published δ13C curve for the Mackenzie Mountains Supergroup. The hypothesis suggests that some lithologically similar units in the two basins were deposited diachronously, and that a significant disconformity may exist within the Wynniatt Formation of the Shaler Supergroup. An important implication of the newly proposed correlation is that the flora and fauna of the Wynniatt Formation predate the " Bitter Springs" isotopic stage, placing a new constraint on the chronology of the Neoproterozoic fossil record.

Original languageEnglish (US)
Pages (from-to)43-63
Number of pages21
JournalPrecambrian Research
Volume181
Issue number1-4
DOIs
StatePublished - Aug 1 2010

All Science Journal Classification (ASJC) codes

  • Geology
  • Geochemistry and Petrology

Keywords

  • Chemostratigraphic correlation
  • Isotope stratigraphy
  • Mackenzie Mountains Supergroup
  • Neoproterozoic
  • Shaler Supergroup
  • Victoria Island

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