A5103138000- Paleontology and Stratigraphy of Fossils
- Geology and Paleoclimatology Research
- Geochemistry and Elemental Analysis
- Isotope Analysis in Ecology
- Plant Genetic and Mutation Studies
- Geological and Geochemical Analysis
- Geological and Geophysical Studies
- Plant Stress Responses and Tolerance
- Methane Hydrates and Related Phenomena
- Plant-Microbe Interactions and Immunity
- Plant Gene Expression Analysis
- Mercury impact and mitigation studies
- Plant Molecular Biology Research
- Hydrocarbon exploration and reservoir analysis
- Radioactive element chemistry and processing
- Marine Biology and Ecology Research
- Evolution and Paleontology Studies
University of Science and Technology of China
2016-2024
Chinese Academy of Sciences
2024
Center for Excellence in Molecular Plant Sciences
2024
Significance To understand how most life on Earth went extinct 250 million years ago, we used multiple sulfur isotopes to investigate redox chemistry changes in the Panthalassic Ocean, comprising ∼85–90% of contemporaneous global ocean. The S-isotopic anomalies from Canada and Japan provide evidence for timing onset euxinia mixing sulfidic oxic waters. Our data suggest that shoaling H 2 S-rich waters may have driven mass extinction delayed recovery marine ecosystem. This study illustrates...
Abstract Volcanic eruptions are thought to be a key driver of rapid climate perturbations over geological time, such as global cooling, warming, and changes in ocean chemistry. However, identification stratospheric volcanic the record their causal link mass extinction events during past 540 million years remains challenging. Here we report unexpected, large mass-independent sulphur isotopic compositions pyrite with Δ 33 S up 0.91‰ Late Ordovician sedimentary rocks from South China. The...
Research Article| June 12, 2018 Evidence of a large δ13Ccarb and δ13Corg depth gradient for deep-water anoxia during the late Cambrian SPICE event Dandan Li; Li 1School Earth Space Sciences, University Science Technology China, Hefei 230026, China Search other works by this author on: GSW Google Scholar Xiaolin Zhang; Zhang Dongping Hu; Hu Xiaoyan Chen; Chen Wei Huang; Huang Xu Menghan Liping Qin; Qin Shanchi Peng; Peng 2Nanjing Institute Geology Palaeontology, Chinese Academy Nanjing...
Abstract The organic carbon isotope (δ 13 C org ) curve for ~1.7-km-thick mid-Cretaceous strata of the Chaqiela section in Gamba area, southern Tibet is presented this study. C-isotopic chemostratigraphic correlation combined with biostratigraphic constraints show that spans early Aptian through Campanian period, and almost all cycle perturbations Oceanic Anoxic Events during period are well recorded continental margin area southeastern Tethys Ocean. Significantly, two levels methane-derived...
Abstract The end-Permian mass extinction (EPME) was the most severe event in past 540 million years, and Siberian Traps large igneous province (STLIP) is widely hypothesized to have been primary trigger for environmental catastrophe. killing mechanisms depend critically on nature of volatiles ejected during STLIP eruptions, initiating about 300 kyr before event, because atmosphere interface between magmatism extinction. Here we report Ni isotopes Permian-Triassic sedimentary rocks from...
The Serpukhovian (mid-Carboniferous) mass extinction has been ranked fifth among the major Phanerozoic biodiversity crises, based on its ecological impact. Global cooling and environmental deterioration driven by late Paleozoic ice age (LPIA) have invoked as potential drivers of extinction; however, underlying killing mechanisms remain poorly understood. Here we present multiple S-isotopic records (δ34S Δ33S) pyrites from Naqing section in South China, a Stratotype Section Point (GSSP) for...
Abstract A pronounced positive δ 13 C excursion in the Hirnantian Age has been documented globally, reflecting large perturbations of carbon cycling Late Ordovician oceans. Increased organic-carbon burial or enhanced carbonate weathering during glacioeustatic sea-level regression proposed to account for this anomalous C-isotope excursion. To test two competing hypotheses, we measured 87 Sr/ 86 Sr and carbonates from Copenhagen Canyon section Nevada, USA. Our data reveal rapid negative shifts...
<title>Abstract</title> Superoxide anion is thought to be a harmful natural byproduct with strong oxidizing ability in all living organisms and was recently found accumulate plant meristems maintain stem cells the shoot undifferentiated meristematic root. Here, we show that DNA demethylases Repressor of Silencing 1 (ROS1) one direct targets superoxide cells. The Fe-S clusters ROS1 are oxidized by activate its glycosylase/lyase activity. We demonstrate extensively participates establishment...
Understanding the effect and extent of diagenesis on isotopic compositions Sr in marine carbonates is a critical prerequisite for their use to unravel past environments. Here, we explore dominant controls carbonate <sup>87</sup>Sr/<sup>86</sup>Sr Late Ordovician section from Monitor Range, USA. Our results reveal distinct increase 0.70794 0.70830 mid-upper <i>D. ornatus</i> zone, which markedly higher than published datasets contemporaneous samples with...
The end-Permian mass extinction (EPME) was the most severe event in past 540 million years, and Siberian Traps large igneous province (STLIP) is widely hypothesized to have been primary trigger for environmental catastrophe.The killing mechanisms depend critically on nature of volatiles ejected during STLIP eruptions, initiating about 300 kyr before event, because atmosphere interface between magmatism extinction.Here we report Ni isotopes Permian-Triassic sedimentary rocks from Arctic...