气候变化领域集成服务门户(CCPortal): The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basin

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DOI	10.1016/j.epsl.2020.116092
	The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basin
	Paiste K.; Pellerin A.; Zerkle A.L.; Kirsimäe K.; Prave A.R.; Romashkin A.E.; Lepland A.
发表日期	2020
ISSN	0012821X
卷号	534
英文摘要	The pyrite sulfur isotope record of the 1.98 Ga Zaonega Formation in the Onega Basin, NW Russia, has played a central role in understanding ocean-atmosphere composition and inferring worldwide fluctuations of the seawater sulfate reservoir during the pivotal times of the Paleoproterozoic Era. That, in turn, has led to a concept that Earth's atmospheric oxygen levels underwent global-scale changes. Here we present a steady-state isotope mass-balance model to gain insight into the mechanisms governing the sulfur cycle and sulfate reservoir during deposition of the organic-rich Zaonega Formation. We demonstrate that coupling between high microbial sulfate reduction rates and effective sulfate removal by pyrite precipitation can lead to Rayleigh distillation of the basinal sulfate reservoir and development of high amplitude positive δ34S excursions. This modelling approach illustrates that secular changes in sedimentary pyrite isotope trends can be explained by processes that reflect local (basin-scale) fluctuations in sulfur cycling rather than global mechanisms. © 2020 Elsevier B.V.
关键词	mass-balance model Paleoproterozoic sulfur cycle sulfur isotope fractionation
英文关键词	Distillation; Isotopes; Pyrites; Sulfur compounds; Atmospheric oxygen; Global mechanisms; Mass balance model; Multiple sulfur isotopes; Paleoproterozoic; Rayleigh distillation; Sulfur cycles; Sulfur isotope; Gallium; atmospheric chemistry; biogeochemical cycle; distillation; mass balance; paleoatmosphere; paleoceanography; paleoenvironment; Proterozoic; pyrite; sulfur cycle; sulfur isotope; Arkhangelsk [Russian Federation]; Onega Basin; Russian Federation
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/202823
作者单位	CAGE—Centre for Arctic Gas Hydrate, Environment and Climate, Department of Geosciences, UiT The Arctic University of Norway, Tromsø, 9037, Norway; Department of Bioscience–Microbiology, Aarhus University, Ny Munkegade 116, Aarhus C, 8000, Denmark; School of Earth and Environmental Sciences and Centre for Exoplanet Science, University of St Andrews, St AndrewsScotland KY16 9AL, United Kingdom; Department of Geology, University of Tartu, Tartu, 50411, Estonia; Institute of Geology, Karelian Science Centre, Pushkinskaya 11, Petrozavodsk, 185610, Russian Federation; Geological Survey of Norway (NGU), Trondheim, 7491, Norway
推荐引用方式 GB/T 7714	Paiste K.,Pellerin A.,Zerkle A.L.,et al. The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basin[J],2020,534.
APA	Paiste K..,Pellerin A..,Zerkle A.L..,Kirsimäe K..,Prave A.R..,...&Lepland A..(2020).The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basin.Earth and Planetary Science Letters,534.
MLA	Paiste K.,et al."The pyrite multiple sulfur isotope record of the 1.98 Ga Zaonega Formation: Evidence for biogeochemical sulfur cycling in a semi-restricted basin".Earth and Planetary Science Letters 534(2020).