Geodynamic oxidation of Archean terrestrial surfaces
文献类型：期刊论文
| 作者 | Wu, Xiao1,2; Zhu, Jianxi1,2,5; He, Hongping1,2,5; Xian, Haiyang1,2; Yang, Yiping1,2; Ma, Lingya1,2; Liang, Xiaoliang1,2,5 ; Lin, Xiaoju1,2; Li, Shan1,2,5; Konhauser, Kurt O. O.3
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| 刊名 | COMMUNICATIONS EARTH & ENVIRONMENT
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| 出版日期 | 2023-04-21 |
| 卷号 | 4期号:1页码:9 |
| DOI | 10.1038/s43247-023-00789-3 |
| 英文摘要 | Abiotic oxidation of silicate minerals is possible via homolysis of Si-O bonds, with greater efficiency for more felsic minerals, according to an experimental investigation which suggests this process could have produced reactive oxygen species during the Archean. One of the paradoxes of the Archean rock record is how evidence for oxidative continental weathering is plausible when the atmosphere lacked oxygen prior to the Great Oxidation Event ca. 2.5 billion years ago. We detected reactive oxygen species (ROS) production at various silicate-water interfaces in a simulated Archean atmosphere and calculated homolysis rates of silicon-oxygen bonds in these minerals. We find that ROS can be produced while silicates were eroded and transported by streams to depositional basins. The magnitude of ROS production increases from mafic- to felsic-silicates. During early continent formation, e.g., the Kaapvaal and Pilbara basins in the Paleoarchean, the emplacement of granitoids and their subsequent exposure to physical weathering might have annually provided at least 1.73 x 10(8) mol O-2 before the biological O-2 production. Importantly, this process could have oxidatively mobilized redox-sensitive elements to seawater, increasing the availability of bioessential nutrient elements for the Archean biosphere. |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000976031200002 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74295]  |
| 专题 | 中国科学院矿物学与成矿学重点实验室 |
| 通讯作者 | He, Hongping; Konhauser, Kurt O. O.; Li, Yiliang |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB T6G 2E3, Canada 4.Univ Hong Kong, Dept Earth Sci, Hong Kong 999077, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xiao,Zhu, Jianxi,He, Hongping,et al. Geodynamic oxidation of Archean terrestrial surfaces[J]. COMMUNICATIONS EARTH & ENVIRONMENT,2023,4(1):9. |
| APA | Wu, Xiao.,Zhu, Jianxi.,He, Hongping.,Xian, Haiyang.,Yang, Yiping.,...&Li, Yiliang.(2023).Geodynamic oxidation of Archean terrestrial surfaces.COMMUNICATIONS EARTH & ENVIRONMENT,4(1),9. |
| MLA | Wu, Xiao,et al."Geodynamic oxidation of Archean terrestrial surfaces".COMMUNICATIONS EARTH & ENVIRONMENT 4.1(2023):9. |
入库方式： OAI收割
来源：广州地球化学研究所
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