气候变化领域集成服务门户(CCPortal): The great oxidation event preceded a paleoproterozoic "snowball earth"

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DOI	10.1073/pnas.2003090117
	The great oxidation event preceded a paleoproterozoic "snowball earth"
	Warke M.R.; Rocco T.D.; Zerkle A.L.; Lepland A.; Prave A.R.; Martin A.P.; Ueno Y.; Condon D.J.; Claire M.W.
发表日期	2020
ISSN	0027-8424
起始页码	13314
结束页码	13320
卷号	117 期号:24
英文摘要	The inability to resolve the exact temporal relationship between two pivotal events in Earth history, the Paleoproterozoic Great Oxidation Event (GOE) and the first "snowball Earth" global glaciation, has precluded assessing causality between changing atmospheric composition and ancient climate change. Here we present temporally resolved quadruple sulfur isotope measurements (δ34S, Δ33S, and Δ36S) from the Paleoproterozoic Seidorechka and Polisarka Sedimentary Formations on the Fennoscandian Shield, northwest Russia, that address this issue. Sulfides in the former preserve evidence of massindependent fractionation of sulfur isotopes (S-MIF) falling within uncertainty of the Archean reference array with a Δ36S/Δ33S slope of -1.8 and have small negative Δ33S values, whereas in the latter mass-dependent fractionation of sulfur isotopes (S-MDF) is evident, with a Δ36/Δ33S slope of -8.8. These trends, combined with geochronological constraints, place the S-MIF/S-MDF transition, the key indicator of the GOE, between 2,501.5 ± 1.7 Ma and 2,434 ± 6.6 Ma. These are the tightest temporal and stratigraphic constraints yet for the S-MIF/S-MDF transition and show that its timing in Fennoscandia is consistent with the S-MIF/S-MDF transition in North America and South Africa. Further, the glacigenic part of the Polisarka Formation occurs 60 m above the sedimentary succession containing S-MDF signals. Hence, our findings confirm unambiguously that the S-MIF/S-MDF transition preceded the Paleoproterozoic snowball Earth. Resolution of this temporal relationship constrains cause-and-effect drivers of Earth's oxygenation, specifically ruling out conceptual models in which global glaciation precedes or causes the evolution of oxygenic photosynthesis. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Great oxidation event; Mass independent fractionation; Quadruple sulfur isotopes; Snowball earth
语种	英语
scopus关键词	limestone; radioisotope; sulfate 33; sulfate 34; sulfate 36; unclassified drug; Article; glaciation; isotope analysis; mass spectrometry; oxidation; oxygenation; Paleoproterozoic; photosynthesis; priority journal; pyrolysis; sedimentation
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160915
作者单位	Warke, M.R., School of Earth and Environmental Sciences, University of St Andrews, St Andrews, Scotland, KY16 9AL, United Kingdom; Rocco, T.D., School of Earth and Environmental Sciences, University of St Andrews, St Andrews, Scotland, KY16 9AL, United Kingdom, Geowissenschaftliches Zentrum, Universitat Gottingen, Gottingen, 37077, Germany; Zerkle, A.L., School of Earth and Environmental Sciences, University of St Andrews, St Andrews, Scotland, KY16 9AL, United Kingdom, Centre for Exoplanet Science, University of St Andrews, St Andrews, Scotland, KY16 9AL, United Kingdom; Lepland, A., Geological Survey of Norway, Trondheim, 7491, Norway, Department of Geology, University of Tartu, Tartu, 50441, Estonia; Prave, A.R., School of Earth and Environmental Sciences, University of St Andrews, St Andrews, Scotland, KY16 9AL, United Kingdom; Martin, A.P., Natural Environment Research Council Isotope Geosciences Laboratory, British Geological Survey, Keyworth, NG12 5GG, United Kingdom, GNS Science, Dunedin, 9054, Ne...
推荐引用方式 GB/T 7714	Warke M.R.,Rocco T.D.,Zerkle A.L.,et al. The great oxidation event preceded a paleoproterozoic "snowball earth"[J],2020,117(24).
APA	Warke M.R..,Rocco T.D..,Zerkle A.L..,Lepland A..,Prave A.R..,...&Claire M.W..(2020).The great oxidation event preceded a paleoproterozoic "snowball earth".Proceedings of the National Academy of Sciences of the United States of America,117(24).
MLA	Warke M.R.,et al."The great oxidation event preceded a paleoproterozoic "snowball earth"".Proceedings of the National Academy of Sciences of the United States of America 117.24(2020).