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

  title={Permo-Triassic Boundary Superanoxia and Stratified Superocean: Records from Lost Deep Sea},
  volume={276 5310},
  • Isozaki
  • Published 11 April 1997
  • Environmental Science, Geography
  • Science
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… 

Transient Permian-Triassic euxinia in the southern Panthalassa deep ocean

Both the duration and severity of deep-water anoxic conditions across the Permian-Triassic mass extinction (PTME) are controversial. Panthalassa Ocean circulation models yield varying results,

Enhanced flux of extraterrestrial 3He across the Permian–Triassic boundary

AbstractThe ca 252 Ma Permian–Triassic boundary (PTB) represents the most severe mass extinction event of the Phanerozoic, with the disappearance of ~ 80% of marine invertebrate species. Large-scale

Chemostratigraphy indicates a relatively complete Late Permian to Early Triassic sequence in the western United States

Although the latest Permian mass extinction and associated δ 13 C excursion are well documented from the Tethys Ocean, carbonate rocks preserving these events in the eastern Panthalassic Ocean

Multidisciplinary stratigraphy across the Permian-Triassic boundary in deep-water environment of the Dongpan section, south China

13 Corg values occurred in the PTBST. The global correlation was also compared by multidisciplinary stratigraphy between the Dongpan section and GSSP in the Meishan section. The correlation was based

Altered river morphology in south africa related to the permian-triassic extinction

Evidence from correlative nonmarine strata elsewhere in the world containing fluvial Permian-Triassic boundary sections suggests that a catastrophic terrestrial die-off of vegetation was a global event, producing a marked increase in sediment yield as well as contributing to the global delta(13)C excursion across the Permians-Tri Jurassic boundary.

Photic Zone Euxinia During the Permian-Triassic Superanoxic Event

The authors' evidence for widespread photiczone euxinic conditions suggests that sulfide toxicity was a driver of the extinction and a factor in the protracted recovery of the Permian-Triassic superanoxic event.

Millennial-scale ocean redox and δ13C changes across the Permian–Triassic transition at Meishan and implications for the biocrisis

The Permian–Triassic extinction was the largest Phanerozoic mass extinction event, yet its ultimate causes remain unresolved. Ocean redox conditions, global warming, and carbon cycle perturbations



A unique geochemical record at the Permian/Triassic boundary

A 330-metre core drilled through the marine Permian/Triassic boundary in the Carnic Alps of Austria allows closely correlated studies of geochemistry, petrography and palaeontology across the

Oceanic Anoxia and the End Permian Mass Extinction

Data on rocks from Spitsbergen and the equatorial sections of Italy and Slovenia indicate that the world's oceans became anoxic at both low and high paleolatitudes in the Late Permian. Such

Comparative Earth History and Late Permian Mass Extinction

The repeated association during the late Neoproterozoic Era of large carbon-isotopic excursions, continental glaciation, and stratigraphically anomalous carbonate precipitation provides a framework

A Double Mass Extinction at the End of the Paleozoic Era

Three tests based on fossil data indicate that high rates of extinction recorded in the penultimate (Guadalupian) stage of the Paleozoic era are not artifacts of a poor fossil record. Instead, they

Paleoceanography: A review for the GSA Centennial

  • W. Hay
  • Environmental Science, Geography
  • 1988
The central problem of paleoceanography is the history of the circulation of the ocean. Although speculation about ancient oceanic circulation goes back to the past century, the field of

Anomalous carbonate precipitates: is the Precambrian the key to the Permian?

Late Permian reefs of the Capitan complex, west Texas; the Magnesian Limestone, England; Chuenmuping reef, south China; and elsewhere contain anomalously large volumes of aragonite and calcite marine cements and sea-floor crusts, as well as abundant microbial precipitates, interpreted to have formed in a stratified ocean with anoxic deep waters enriched in carbonate alkalinity.

The Great Paleozoic Crisis

Are you looking for an exciting book in Geology? Every textbook tells that nothing in Earth history has been more puzzling than that great wave of extinctions that swept the Earth round about 250