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Mesoproterozoic oxygenated deep seawater recorded by early diagenetic carbonate concretions from the Member IV of the Xiamaling Formation, North China

文献类型：期刊论文

作者Liu, Anqi2,3; Tang, Dongjie2,3; Shi, Xiaoying2,4; Zhou, Xiqiang5; Zhou, Limin1; Shang, Mohan4; Li, Yang4; Fang, Hao4
刊名PRECAMBRIAN RESEARCH
出版日期2020-06-01
卷号341页码:12
关键词Boring Billion Oxygen concentration Carbonate concretion Early diagenesis Eukaryote
ISSN号0301-9268
DOI10.1016/j.precamres.2020.105667
英文摘要Oxygen availability is crucial for the evolution of eukaryotes in geological history. However, the evolution of mid-Proterozoic oceanic-atmospheric redox conditions remains heavily debated, e.g., [O-2] < 0.1-1% PAL vs. > 4-8% PAL (present atmospheric level). In order to further constrain the surface oxygen levels during Mesoproterozoic, an investigation on the I/(Ca + Mg) ratios of deep-water (> 100 m) early diagenetic carbonate concretions from the shale-predominated Member IV of the Xiamaling Formation (similar to 1.4 Ga) in three sections of the North China Platform was conducted. The results show that more than half (36/47) of the I/(Ca + Mg) values obtained from the concretions are higher than 0.5 mu mol/mol (avg. 0.68), indicating non-negligible iodate retained in the porewaters where the concretions were formed. Compared with the iodine redox cycle and oxygen transportation pathway from bottom seawater to surface sediments in modern oceans, the oxygen concentration of the bottom seawater was estimated to be higher than 16-22 mu M, and the minimal atmospheric oxygen level should be higher than 6-9% PAL. This result differs from the previous estimation that the atmospheric oxygen level is lower than 0.1-1% PAL, but is consistent with the estimation of > 4-8% PAL at similar to 1.4 Ga.
WOS关键词DIFFUSIVE BOUNDARY-LAYERS ; ATMOSPHERIC OXYGEN ; OCEAN OXYGENATION ; MCARTHUR BASIN ; BLACK SHALES ; TRACE-METALS ; REDOX PROXY ; IODINE ; WATERS ; EVOLUTION
资助项目National Natural Science Foundation of China[41930320] ; National Natural Science Foundation of China[41972028] ; Fundamental Research Funds for the Central Universities[2652018005] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS-201905]
WOS研究方向Geology
语种英语
WOS记录号WOS:000528207600006
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS
源URL[http://ir.iggcas.ac.cn/handle/132A11/96235]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Tang, Dongjie
作者单位1.Natl Res Ctr Geoanal, Beijing 100037, Peoples R China
2.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
3.China Univ Geosci Beijing, Inst Earth Sci, Beijing 100083, Peoples R China
4.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Anqi,Tang, Dongjie,Shi, Xiaoying,et al. Mesoproterozoic oxygenated deep seawater recorded by early diagenetic carbonate concretions from the Member IV of the Xiamaling Formation, North China[J]. PRECAMBRIAN RESEARCH,2020,341:12.
APA Liu, Anqi.,Tang, Dongjie.,Shi, Xiaoying.,Zhou, Xiqiang.,Zhou, Limin.,...&Fang, Hao.(2020).Mesoproterozoic oxygenated deep seawater recorded by early diagenetic carbonate concretions from the Member IV of the Xiamaling Formation, North China.PRECAMBRIAN RESEARCH,341,12.
MLA Liu, Anqi,et al."Mesoproterozoic oxygenated deep seawater recorded by early diagenetic carbonate concretions from the Member IV of the Xiamaling Formation, North China".PRECAMBRIAN RESEARCH 341(2020):12.

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来源：地质与地球物理研究所

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