气候变化领域集成服务门户(CCPortal): Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian

CCPortal

DOI	10.1016/j.epsl.2021.116839
	Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction
	Lu M.; Lu Y.; Ikejiri T.; Sun D.; Carroll R.; Blair E.H.; Algeo T.J.; Sun Y.
发表日期	2021
ISSN	0012821X
卷号	562
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.
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
语种	英语
来源期刊	Earth and Planetary Science Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/203200
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
推荐引用方式 GB/T 7714	Lu M.,Lu Y.,Ikejiri T.,等. Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction[J],2021,562.
APA	Lu M..,Lu Y..,Ikejiri T..,Sun D..,Carroll R..,...&Sun Y..(2021).Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction.Earth and Planetary Science Letters,562.
MLA	Lu M.,et al."Periodic oceanic euxinia and terrestrial fluxes linked to astronomical forcing during the Late Devonian Frasnian–Famennian mass extinction".Earth and Planetary Science Letters 562(2021).