Cited by 842Paleontology and Stratigraphy of FossilsGeology and Paleoclimatology ResearchGeochemistry and Elemental Analysis

Permo-Triassic Boundary Superanoxia and Stratified Superocean: Records from Lost Deep Sea

Isozaki, Yukio·1997·Science

Abstract

Pelagic cherts of Japan and British Columbia, Canada, recorded a long-term and worldwide deep-sea anoxic (oxygen-depleted) event across the Permo-Triassic (or Paleozoic and Mesozoic) boundary (251 ± 2 million years ago). The symmetry in lithostratigraphy and redox condition of the boundary sections suggest that the superocean Panthalassa became totally stratified for nearly 20 million years across the boundary. The timing of onset, climax, and termination of the oceanic stratification correspond to global biotic events including the end-Guadalupian decline, the end-Permian extinction, and mid-Triassic recovery.

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Crossref · 10.1126/science.276.5310.235

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  • The end-Permian event is the most extreme of these events, with anoxic conditions estimated to have covered ∼30% of global seafloor area and with anoxic conditions observed even in open-ocean pelagic localities.

    “The end-Permian is the most extreme of these events, with anoxic conditions estimated to have covered ∼30% of global seafloor area, and with anoxic conditions observed even in open-ocean pelagic localities (Isozaki 1997).”

    From The History of Ocean Oxygenation (2022) · cites this paper as Isozaki 1997

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Authors
Isozaki, Y.
Affiliations
Tokyo Institute of Technology (JP)
Corresponding author
Isozaki, Yukio
Venue
Science
Published
1997-04-11
Volume
276
Issue
5310
Pages
235-238
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2079115522
Cited by
842
References
0
Citations by year
2026: 19 · 2025: 18 · 2024: 14 · 2023: 35 · 2022: 34 · 2021: 51 · 2020: 32 · 2019: 22 · 2018: 31 · 2017: 20 · 2016: 28 · 2015: 45 · 2014: 36 · 2013: 44 · 2012: 38
FWCI
25.99
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
Keywords
Permian-Triassic boundary, Panthalassa, end-Permian mass extinction, redox conditions

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