Sulfur isotope profiles in the pelagic Panthalassic deep sea during the Permian-Triassic transition

Satoshi Takahashi, Kunio Kaiho, Rie S. Hori, Paul Gorjan, Takahiro Watanabe, Satoshi Yamakita, Yoshiaki Aita, Atsushi Takemura, K. Bernhard Spörli, Takeshi Kakegawa, Masahiro Oba

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


Mesozoic accretionary complexes in Japan and New Zealand contain Panthalassic low latitude and southern mid-latitude deep-water sedimentary rock respectively. These sedimentary rocks record environmental changes in the pelagic Panthalassic Ocean during the transition associated with the severe Permian-Triassic mass extinction. This study presents sulfur isotope records of sulfide from continuous deep-sea Permian-Triassic boundary sections located in northeast Japan (the Akkamori section-2, the most continuous section among other previously reported deep-sea sections) and North Island of New Zealand (the Waiheke-1 section, providing the first sulfur isotopic record from a southern hemisphere deep-sea section). Both sections show sharp ~15‰ drops of the sulfur isotope ratio coupled with a negative shift of organic carbon isotope ratio. Similar decreases in sulfur isotope ratio of carbonate-associated sulfates by ~10‰ accompanied with a negative shift of inorganic carbon isotope ratio at the end-Permian mass extinction horizon have been reported in some shallow water Paleotethyan sections. These sulfur isotope changes suggest that a massive release of 32S-enriched sulfur from the H2S-rich water to the oxic surface-waters coincided with the end-Permian mass extinction.

Original languageEnglish
Pages (from-to)68-78
Number of pages11
JournalGlobal and Planetary Change
Publication statusPublished - 2013 Jun


  • Japan
  • Mass extinction
  • New Zealand
  • Panthalassa
  • Pelagic deep sea
  • Permian
  • Sulfur isotope
  • Triassic

ASJC Scopus subject areas

  • Global and Planetary Change
  • Oceanography


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