An integrated study of the petrographic and geochemical characteristics of organic-rich deposits of the Wufeng and Longmaxi formations, western Hubei Province, South China: Insights into the co-evolution of paleoenvironment and organic matter accumulation

Marine and Petroleum Geology, Journal Year: 2021, Volume and Issue: 132, P. 105193 - 105193

Published: June 24, 2021

Language: Английский

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Nitrogen isotope evidence for a redox-stratified ocean and eustasy-driven environmental evolution during the Ordovician–Silurian transition

Global and Planetary Change, Journal Year: 2021, Volume and Issue: 207, P. 103682 - 103682

Published: Oct. 22, 2021

Language: Английский

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The influence of Late Ordovician volcanism on the marine environment based on high-resolution mercury data from South China

Geological Society of America Bulletin, Journal Year: 2022, Volume and Issue: 135(3-4), P. 787 - 798

Published: July 6, 2022

Abstract Volcanic ash interbeds in the Late Ordovician strata South China record highfrequency volcanic activity. To assess impact of these events on climate and marine biological evolutionary crisis during Mass Extinction (LOME), we present high-resolution measurements mercury (Hg) concentrations organic carbon isotope ratios (δ13Corg) an Ordovician–Silurian sedimentary succession (Muchanggou section). The results show that high-frequency layers Hg enrichments developed synchronously Katian graptolite P. pacificus (Lower Subzone) T. typicus biozones are coupled with a negative shift ~1‰ δ13Corg, which reflects perturbation surface cycles by intense Based fluxes, it is estimated more than 1.1 × 1013 tons CO2 were emitted activities China, interrupted growth polar ice sheet rapid cooling tropical oceans mid-Boda event. As volcanism weakened, increased weathering led to Hirnantian. Both regional global biodiversity declined rapidly end volcanism, suggests ecological was related series disruptions biogeochemical post-volcanic period.

Language: Английский

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Spatiotemporal distribution of global mercury enrichments through the Paleocene-Eocene Thermal Maximum and links to volcanism

Earth-Science Reviews, Journal Year: 2023, Volume and Issue: 248, P. 104647 - 104647

Published: Dec. 7, 2023

Language: Английский

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Developments in analytical techniques for chemostratigraphy, chronostratigraphy, and geochemical fingerprinting studies: Current status and future trends

Journal of South American Earth Sciences, Journal Year: 2023, Volume and Issue: 129, P. 104528 - 104528

Published: Aug. 3, 2023

Language: Английский

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