globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2021.116839
论文题名:
Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction
作者: Lu M.; Lu Y.; Ikejiri T.; Sun D.; Carroll R.; Blair E.H.; Algeo T.J.; Sun Y.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 562
语种: 英语
中文关键词: biomarker ; black shale ; Chattanooga Shale ; eccentricity ; precession ; Upper Kellwasser
英文关键词: Orbits ; Astronomical forcing ; Environmental stressors ; Geochemical indices ; Geochemical profiles ; Orbital precession ; Primary productivity ; Terrestrial plants ; Ultrahigh resolution ; Geochemistry ; biomarker ; black shale ; depositional environment ; eccentricity ; Frasnian-Famennian boundary ; mass extinction ; paleoenvironment ; precession ; Chattanooga ; Tennessee ; United States
英文摘要: Oceanic anoxia is considered as the immediate cause of the Frasnian–Famennian mass extinction, yet the frequency of anoxia and associated environmental modulators remains unknown. Here, we demonstrate that astronomical forcing paced oceanic anoxic episodes by mediating land-ocean interactions during the Upper Kellwasser (UKW) Event, using an ultra-high-resolution (one centimeter spacing), multi-proxy geochemical profile of a UKW interval from the Upper Devonian Chattanooga Shale of Tennessee, USA. Organic and inorganic geochemical indices for oceanic anoxia/euxinia, marine primary productivity, terrestrial plant/soil inputs, and clastic sediment inputs show synchronous fluctuations that were paced by the Earth's orbital precession. This study provides the first mechanistic evidence linking the periodicity of Late Devonian oceanic euxinia to astronomical forcing and identifies terrestrial-to-marine inorganic and organic fluxes as the driver of this linkage. These results suggest that astronomical forcing modulated the expression of environmental stressors that led to the Frasnian–Famennian mass extinction. © 2021 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165578
Appears in Collections:气候变化与战略

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作者单位: Molecular Eco-Geochemistry Laboratory, Department of Geological Sciences, University of Alabama, Tuscaloosa, AL 35485, United States; Organic Geochemistry Unit, School of Earth Science, Zhejiang University, Hangzhou, Zhejiang 310027, China; Energy Investigation Program, Geological Survey of Alabama, Tuscaloosa, AL 35401, United States; Department of Anthropology, University of Alabama, Tuscaloosa, AL 35487, United States; Department of Geology, University of Cincinnati, Cincinnati, OH 45221-0013, United States; State Key Laboratories of GPMR and BGEG, China University of Geosciences, Wuhan, Hubei 430074, China

Recommended Citation:
Lu M.,Lu Y.,Ikejiri T.,et al. Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction[J]. Earth and Planetary Science Letters,2021-01-01,562
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