Institutional Repository of Key Laboratory of Cenozoic Geology and Environment, Chinese Academy of Sciences
| Mesoproterozoic Molar Tooth Structure Related to Increased Marine Oxygenation | |
| Tang, Dongjie1,2; Fang, Hao3; Shi, Xiaoying1,3; Liang, Liyuan4; Zhou, Limin5; Xie, Baozeng2; Huang, Kangjun6,7; Zhou, Xiqiang8,9; Wu, Mengting2; Riding, Robert4 | |
| 2023 | |
| Source Publication | JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
 |
| ISSN | 2169-8953 |
| Volume | 128Issue:1Pages:18 |
| Abstract | Marine carbonate fabrics are intrinsically related to ocean chemistry, physical processes and biological activity. Molar tooth structure (MTS), a globally distributed structure in Proterozoic carbonate sediments, has been widely studied for more than a century; yet its connections with physical and biological processes remain unclear. Using multiple techniques, we studied similar to 1.57 Ga MTS and identified a connection between its occurrence and increased marine oxygenation. In our samples, the matrix surrounding MTS is typically dominated by carbonate mud with early diagenetic dolomite crystals. High I/(Ca + Mg) ratios (up to 4.1 mu mol/mol) and negative Ce anomalies (similar to 0.8) detected in the matrix are consistent with the oxidative removal of inhibitors such as Fe2+ and Mn2+ in the water-column that permitted carbonate "whiting " mud precipitation stimulated by cyanobacterial photosynthesis. This cohesive but not rigid seafloor carbonate mud was a prerequisite for synsedimentary MTS crack formation. Systematically higher carbon isotope (delta C-13) values in MTS microspars, relative to host sediment, support origination of the cracks by methane degassing in the organic-rich carbonate mud. Low, but non-zero, I/(Ca + Mg) values of the MTS microspar suggest that the precipitation of the microspar that filled the MTS cracks was triggered by oxidative removal of residual Fe2+ and Mn2+ in porewater through mixing with overlying oxygenated seawater. We therefore propose that MTS formed under moderately oxygenated conditions and that its sporadic occurrence prior to similar to 1.2 Ga reflects episodes of pulsed marine oxygenation in an overall anoxic setting. |
| Keyword | redox conditions molar tooth structure methane degassing I / (Ca plus Mg) pulsed oxygenation |
| DOI | 10.1029/2022JG007077 |
| Funding Organization | National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities |
| WOS Keyword | CARBON ISOTOPIC FRACTIONATION ; PROTEROZOIC BELT SUPERGROUP ; ATMOSPHERIC OXYGEN ; TIELING FORMATION ; JIXIAN SECTION ; OCEAN ; ORIGIN ; EVOLUTION ; SEAWATER ; IODINE |
| Language | 英语 |
| Funding Project | National Key Research and Development Project of China[2020YFA0714803] ; National Natural Science Foundation of China[41930320] ; National Natural Science Foundation of China[41972028] ; Key Research Program of the Institute of Geology and Geophysics, CAS[IGGCAS-201905] ; Chinese "111" project[B20011] ; Fundamental Research Funds for the Central Universities[292019093] |
| Funding Organization | National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Project of China ; National Key Research and Development Project of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Key Research Program of the Institute of Geology and Geophysics, CAS ; Chinese "111" project ; Chinese "111" project ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities |
| WOS Research Area | Environmental Sciences & Ecology ; Geology |
| WOS Subject | Environmental Sciences ; Geosciences, Multidisciplinary |
| WOS ID | WOS:000913840200001 |
| Publisher | AMER GEOPHYSICAL UNION |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/106860 |
| Collection | 新生代地质与环境院重点实验室 |
| Corresponding Author | Tang, Dongjie |
| Affiliation | 1.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China 2.China Univ Geosci Beijing, Inst Earth Sci, Beijing, Peoples R China 3.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing, Peoples R China 4.Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN USA 5.Natl Res Ctr Geoanal, Beijing, Peoples R China 6.Northwest Univ, State Key Lab Continental Dynam, Xian, Peoples R China 7.Northwest Univ, Early Life Inst, Dept Geol, Xian, Peoples R China 8.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China 9.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Tang, Dongjie,Fang, Hao,Shi, Xiaoying,et al. Mesoproterozoic Molar Tooth Structure Related to Increased Marine Oxygenation[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2023,128(1):18. |
| APA | Tang, Dongjie.,Fang, Hao.,Shi, Xiaoying.,Liang, Liyuan.,Zhou, Limin.,...&Riding, Robert.(2023).Mesoproterozoic Molar Tooth Structure Related to Increased Marine Oxygenation.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,128(1),18. |
| MLA | Tang, Dongjie,et al."Mesoproterozoic Molar Tooth Structure Related to Increased Marine Oxygenation".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 128.1(2023):18. |
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