1996/07/26 by Andrew H. Knoll, Richard K. Bambach, Donald E. Canfield +1 · 38 citations
Earth and Planetary Sciences · Environmental Science · #Paleontology and Stratigraphy of Fossils #Geology and Paleoclimatology Research #Methane Hydrates and Related Phenomena
paper · doi:10.1126/science.273.5274.452
openalex publication_date 1996/07/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/23
The repeated association during the late Neoproterozoic Era of large carbon-isotopic excursions, continental glaciation, and stratigraphically anomalous carbonate precipitation provides a framework for interpreting the reprise of these conditions on the Late Permian Earth. A paleoceanographic model that was developed to explain these stratigraphically linked phenomena suggests that the overturn of anoxic deep oceans during the Late Permian introduced high concentrations of carbon dioxide into surficial environments. The predicted physiological and climatic consequences for marine and terrestrial organisms are in good accord with the observed timing and selectivity of Late Permian mass extinction.