Coupled δ44/40Ca, δ88/86Sr, and 87Sr/86Sr geochemistry across the end-Permian mass extinction event
| Autor: | Shu-zhong Shen, Bradley B. Sageman, Andrew D. Jacobson, Jiuyuan Wang, Jahandar Ramezani, Hua Zhang, Matthew T. Hurtgen, Samuel A. Bowring |
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| Rok vydání: | 2019 |
| Předmět: |
Extinction event
010504 meteorology & atmospheric sciences Geochemistry Ocean acidification 010502 geochemistry & geophysics 01 natural sciences Diagenesis chemistry.chemical_compound chemistry Geochemistry and Petrology Flood basalt Period (geology) Carbonate Geology Sea level Permian–Triassic extinction event 0105 earth and related environmental sciences |
| Zdroj: | Geochimica et Cosmochimica Acta. 262:143-165 |
| ISSN: | 0016-7037 |
| Popis: | We report high-resolution, high-precision δ44/40Ca, δ88/86Sr, and 87Sr/86Sr records spanning the Permian-Triassic boundary (PTB) from the Meishan and Dajiang carbonate successions in south China. The goal of the study was to understand the behavior of Ca and Sr isotopes during a time period in Earth history characterized by severe biological and environmental perturbations, including a major mass extinction, flood basalt volcanism, ocean acidification, and sea level fluctuations. Dajiang displays negative δ44/40Ca and δ88/86Sr excursions and invariant 87Sr/86Sr ratios in the |
| Databáze: | OpenAIRE |
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