Seawater strontium isotopic perturbation at the Permian-Triassic boundary, West S
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- journal_title：Geology
- Contributor：Michal Gruszczynski ; Antoni Hoffman ; Krzysztof Malkowski ; Jan Veizer
- Publisher：Geological Society of America
- Date：1992-
- Format：text/html
- Language：en
- Identifier：10.1130/0091-7613(1992)020<0779:SSIPAT>2.3.CO;2
- journal_abbrev：Geology
- issn：0091-7613
- volume：20
- issue：9
- firstpage：779
摘要
Brachiopod shell samples from the Kapp Starostin Formation, West Spitsbergen, provide evidence for a large and rapid drop in seawater strontium isotopic ratios close to the Permian-Triassic boundary. The strontium isotopic shift is associated with similarly dramatic declines in carbon and oxygen isotope curves recorded in the same samples. This pattern can be explained by a paleoceanographic model that we have proposed previously, a model in which there is replacement of a largely stagnant, stratified ocean by a vigorously mixed one at the Permian-Triassic boundary.