Linking carbon cycle perturbations to the Late Ordovician glaciation and mass extinction: A modeling approach

Earth and Planetary Science Letters, Journal Year: 2024, Volume and Issue: 631, P. 118635 - 118635

Published: March 2, 2024

Language: Английский

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The Middle–Late Pennsylvanian event: Timing and mechanisms

Palaeogeography Palaeoclimatology Palaeoecology, Journal Year: 2025, Volume and Issue: unknown, P. 112893 - 112893

Published: March 1, 2025

Language: Английский

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Multigenetic origins of pyrite in sedimentary systems: A NanoSIMS sulfur isotope study of the Silurian Longmaxi Formation

Marine and Petroleum Geology, Journal Year: 2025, Volume and Issue: unknown, P. 107423 - 107423

Published: April 1, 2025

Language: Английский

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Roller-coaster atmospheric-terrestrial-oceanic-climatic system during Ordovician-Silurian transition: Consequences of large igneous provinces

Geoscience Frontiers, Journal Year: 2023, Volume and Issue: 14(3), P. 101537 - 101537

Published: Jan. 18, 2023

The Ordovician-Silurian transition (OST) hosted profound and frequent changes in the atmospheric-terrestrial-oceanic-climatic system (ATOCS). Previous studies have found contrasting stages for such changes, primarily based on hiatus-interrupted sections. However, dominant driving factors mechanisms reconciling remain controversial. Mercury isotopes, which undergo both mass-dependent mass-independent fractionation, can provide critical insights into deep-time ATOCSs, especially those impacted by large igneous provinces (LIPs) events. Here, we build a high-resolution multi-proxy record of Hg (concentrations isotopic compositions) combined with organic carbon isotopes (δ13Corg) whole-rock geochemical data (including trace elements phosphorus) from continuous cores Yangtze Platform, South China. Our data, reported ones, indicate occurrence LIP eruptions against localized volcanism, four successive, yet ATOCSs during OST. Moreover, identified coupling between two-pulse magmatism extreme each special pCO2, weathering rate, primary productivity, redox condition, climatic mode, biotic evolution. For stage I, first pulse triggered global warming, enhanced terrestrial weathering, oceanic acidification, eutrophication, anoxia, P recycling, thereby widespread deposition black shales. During II, Hirnantian glaciation oxygenation arose intense chemical shale I; slashed facilitated CO2 accumulation. In III, another de-glaciation, ATOCS was largely similar to that I. This led round positive δ13Corg excursion IV. Compared environmental pressure peculiar stage, their transitions might been more devastating triggering prolonged Late Ordovician Mass Extinction (LOME). limited recovery possible later portion I III. study strata OST provides an excellent framework better illuminating LIPs' essential role "roller-coaster" behavior thus crisis pivotal period

Language: Английский

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Volcanism-driven marine eutrophication in the end-Ordovician: Evidence from radiolarians and trace elements of black shale in South China

Journal of Asian Earth Sciences, Journal Year: 2023, Volume and Issue: 253, P. 105687 - 105687

Published: April 28, 2023

Language: Английский

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Regional synthesis of the Ordovician geology and stratigraphy of China

Geological Society London Special Publications, Journal Year: 2022, Volume and Issue: 533(1), P. 421 - 478

Published: Dec. 14, 2022

Abstract China presently comprises several independent tectonic palaeoplates or terranes and parts of other blocks, which have been assembled over geological time. In the Ordovician, these blocks included South China, North Tarim, Qaidam, Junggar, Qiangtang-Qamdo, Lhasa partially Himalaya, Sibumasu Indochina, as well Altay-Xing'an Songpan-Garze fold belts, were discrete but near-adjacent. Twelve stratigraphic megaregions bounded by sutures major fault zones can be recognized. Some them are further differentiated into regions according to lithological biotic facies distinct sequences. Here, palaeontologic features biostratigraphic framework summarized. The unified presented herein is supported 33 graptolite biozones 27 conodont biozones, together with supplementary communities associations brachiopods, trilobites, cephalopods, chitinozoans, acritarchs radiolarians. With constraints integrative chronostratigraphy, biostratigraphy, chemostratigraphy, cyclostratigraphy magnetostratigraphy, along some geochronologic data, our understanding temporal spatial distribution Ordovician lithostratigraphic units on has significantly advanced. Vast amounts new data accumulated in recent decades also constrain events evident such marine anoxia, faunal turnovers orogenies.

Language: Английский

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Coupling of nitrogen biogeochemical cycling and phytoplankton community structure before and after the Late Ordovician mass extinction in South China

Chemical Geology, Journal Year: 2024, Volume and Issue: 647, P. 121933 - 121933

Published: Jan. 7, 2024

Language: Английский

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Links between deep Earth processes and hyperthermal and extreme cooling events

Chinese Science Bulletin (Chinese Version), Journal Year: 2023, Volume and Issue: 69(2), P. 215 - 229

Published: June 1, 2023

Language: Английский

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Geochemistry of environmental stress during mass extinctions

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 365 - 379

Published: Feb. 24, 2024

Language: Английский

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Editorial preface to special issue: The Earth System during icehouse Climate Modes: Evidence from glacial records in China

Global and Planetary Change, Journal Year: 2024, Volume and Issue: 236, P. 104435 - 104435

Published: April 10, 2024

Language: Английский

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