Publications by authors named "Yugan Jin"
Article Synopsis
- The end-Permian mass extinction marked the largest loss of biodiversity in Earth's history, with key data collected from sedimentary sections in South China to understand its timing and causes.
- High-precision U-Pb dating indicates the extinction peak occurred just before 252.28 million years ago, following a notable decline in carbon isotopes and correlated with significant δ(13)C changes.
- The extinction event, lasting under 200,000 years, affected both marine and terrestrial environments and was possibly triggered by a large release of carbon dioxide and/or methane, contributing to widespread wildfires.
U-Pb zircon dates from volcanic ash beds within the Doushantuo Formation (China) indicate that its deposition occurred between 635 and 551 million years ago. The base records termination of the global-scale Marinoan glaciation and is coeval with similar dated rocks from Namibia, indicating synchronous deglaciation. Carbon isotopic and sequence-stratigraphic data imply that the spectacular animal fossils of the Doushantuo Formation are for the most part younger than 580 million years old.
View Article and Find Full Text PDFCarbon and sulfur isotopic data, together with biomarker and iron speciation analyses of the Hovea-3 core that was drilled in the Perth Basin, Western Australia, indicate that euxinic conditions prevailed in the paleowater column during the Permian-Triassic superanoxic event. Biomarkers diagnostic for anoxygenic photosynthesis by Chlorobiaceae are particularly abundant at the boundary and into the Early Triassic. Similar conditions prevailed in the contemporaneous seas off South China.
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