Phosphorus-limited conditions in the early Neoproterozoic ocean maintained low levels of atmospheric oxygen
文献类型:期刊论文
作者 | Guilbaud, Romain3; Poulton, Simon W.4; Thompson, Jennifer4; Husband, Kathryn F.4; Zhu, Maoyan1,5,6; Zhou, Ying7; Shields, Graham A.7; Lenton, Timothy M.2 |
刊名 | NATURE GEOSCIENCE |
出版日期 | 2020-03-02 |
页码 | 7 |
ISSN号 | 1752-0894 |
DOI | 10.1038/s41561-020-0548-7 |
英文摘要 | The redox chemistry of anoxic continental margin settings evolved from widespread sulfide-containing (euxinic) conditions to a global ferruginous (iron-containing) state in the early Neoproterozoic era (from similar to 1 to 0.8 billion years ago). Ocean redox chemistry exerts a strong control on the biogeochemical cycling of phosphorus, a limiting nutrient, and hence on primary production, but the response of the phosphorus cycle to this major ocean redox transition has not been investigated. Here, we use a geochemical speciation technique to investigate the phase partitioning of phosphorus in an open marine, early Neoproterozoic succession from the Huainan Basin, North China. We find that effective removal of bioavailable phosphorus in association with iron minerals in a globally ferruginous ocean resulted in oligotrophic (nutrient limited) conditions, and hence a probable global decrease in primary production, organic carbon burial and, subsequently, oxygen production. Nevertheless, phosphorus availability and organic carbon burial were sufficient to maintain an oxidizing atmosphere. These data imply substantial nutrient-driven variability in atmospheric oxygen levels through the Proterozoic, rather than the stable levels commonly invoked. Early Neoproterozoic marine productivity fell due to nutrient drawdown following a switch from an iron-rich to a sulfide-rich ocean, according to records of phosphorus geochemistry measured from sedimentary sections in North China. |
WOS关键词 | WATER-COLUMN ANOXIA ; FERRUGINOUS CONDITIONS ; IRON ; CARBON ; EVOLUTION ; OXIDATION ; BURIAL ; RISE ; REGENERATION ; PRODUCTIVITY |
资助项目 | NERC[NE/I005978/1] ; NSFC[41661134048] ; NSFC[NE/P013651] ; Chinese Academy of Sciences[XDB18000000] ; Royal Society Wolfson Research Merit Awards ; Leverhulme Trust Fellowship |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | NATURE PUBLISHING GROUP |
WOS记录号 | WOS:000517739500002 |
资助机构 | NERC ; NSFC ; Chinese Academy of Sciences ; Royal Society Wolfson Research Merit Awards ; Leverhulme Trust Fellowship |
源URL | [http://ir.nigpas.ac.cn/handle/332004/31598] |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Guilbaud, Romain |
作者单位 | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 2.Univ Exeter, Global Syst Inst, Exeter, Devon, England 3.Univ Toulouse, CNRS, Geosci Environm Toulouse, Toulouse, France 4.Univ Leeds, Sch Earth & Environm, Leeds, W Yorkshire, England 5.Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China 6.Nanjing Inst Geol & Palaeontol, Ctr Excellence Life & Paleoenvironm, Nanjing, Peoples R China 7.UCL, Dept Earth Sci, London, England |
推荐引用方式 GB/T 7714 | Guilbaud, Romain,Poulton, Simon W.,Thompson, Jennifer,et al. Phosphorus-limited conditions in the early Neoproterozoic ocean maintained low levels of atmospheric oxygen[J]. NATURE GEOSCIENCE,2020:7. |
APA | Guilbaud, Romain.,Poulton, Simon W..,Thompson, Jennifer.,Husband, Kathryn F..,Zhu, Maoyan.,...&Lenton, Timothy M..(2020).Phosphorus-limited conditions in the early Neoproterozoic ocean maintained low levels of atmospheric oxygen.NATURE GEOSCIENCE,7. |
MLA | Guilbaud, Romain,et al."Phosphorus-limited conditions in the early Neoproterozoic ocean maintained low levels of atmospheric oxygen".NATURE GEOSCIENCE (2020):7. |
入库方式: OAI收割
来源:南京地质古生物研究所
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