Coupled evolution of nitrogen cycling and redoxcline dynamics on the Yangtze Block across the Ediacaran-Cambrian transition
文献类型：期刊论文
| 作者 | Chen, Yan1,2,3,4; Diamond, Charles W.2; Stueken, Eva E.5,6; Cai, Chunfang1,3,4; Gill, Benjamin C.7; Zhang, Feifei8; Bates, Steve M.2; Chu, Xuelei3,4; Ding, Yi1,3,4; Lyons, Timothy W.2 |
| 刊名 | GEOCHIMICA ET COSMOCHIMICA ACTA
 |
| 出版日期 | 2019-07-15 |
| 卷号 | 257页码:243-265 |
| ISSN号 | 0016-7037 |
| 关键词 | Ediacaran Cambrian Yangtze Block Nitrogen cycling Redoxcline Ammonium |
| DOI | 10.1016/j.gca.2019.05.017 |
| 英文摘要 | The Ediacaran-Cambrian transition is characterized by the evolution of complex eukaryotes and rapid diversification of metazoans. However, linkages between environmental triggers and evolutionary patterns remain unclear. Here, we present high-resolution records of carbon and nitrogen isotopic data (delta C-13, delta N-15) for a drill core extending from the early Ediacaran Doushantuo Formation to the early Cambrian Jiumenchong Formation, located on the slope of the Yangtze Block. Our data show that sedimentary bulk nitrogen isotope values (delta N-15(bulk)) decrease progressively from the early Ediacaran to the early Cambrian, broadly concurrent with nitrogen isotope data from other sections throughout the Yangtze Block. During the early Ediacaran, however, delta N-15 bulk values from our study are higher (maximum 11.2%e) compared to those from more restricted coeval sections, suggesting a higher degree of denitrification in our slope section. The early Ediacaran delta N-15(bulk) data from the Yangtze Block may thus provide indirect evidence for an upwelling system that led to a shallower redoxcline in slope environments of the Upper Yangtze region. Widespread light delta N-15 bulk values from the early Cambrian (minimum -7.5%e) paired with excess silicate-bound nitrogen throughout much of the Yangtze Block are most parsimoniously interpreted as non-quantitative assimilation of ammonium (NH4-) with relatively high concentrations of NH4+ accumulating in the deep basin. Overall, the spatial and temporal trends in nitrogen cycling across the Yangtze Block suggest that fixed nitrogen was more bioavailable in the Ediacaran-Cambrian Yangtze Basin compared to previously studied Mesoproterozoic sections, although nitrogen speciation in the photic zone may have varied with time. Environmental factors such as oxygen levels and nitrogen bioavailability may have shaped the evolutionary trajectory of life on the Yangtze Block and potentially elsewhere across the Ediacaran-Cambrian transition. (C) 2019 Elsevier Ltd. All rights reserved. |
| WOS关键词 | SOUTH CHINA IMPLICATIONS ; ORGANIC-CARBON ISOTOPE ; ATMOSPHERIC OXYGEN ; TRACE-ELEMENTS ; METASEDIMENTARY ROCKS ; DOUSHANTUO FORMATION ; OCEANIC OXYGENATION ; SINKING PARTICLES ; ANAMMOX BACTERIA ; STABLE NITROGEN |
| 资助项目 | NSF FESD program ; Earth-Life Transitions program ; NASA Astrobiology Institute[NNA15BB03A] ; key project of the Natural Science Foundation of China[41730424] ; program of China Scholarships Council[201504910582] ; Virginia Tech |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000470830800016 |
| 资助机构 | NSF FESD program ; NSF FESD program ; NSF FESD program ; NSF FESD program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; Virginia Tech ; Virginia Tech ; Virginia Tech ; Virginia Tech ; NSF FESD program ; NSF FESD program ; NSF FESD program ; NSF FESD program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; Virginia Tech ; Virginia Tech ; Virginia Tech ; Virginia Tech ; NSF FESD program ; NSF FESD program ; NSF FESD program ; NSF FESD program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; Virginia Tech ; Virginia Tech ; Virginia Tech ; Virginia Tech ; NSF FESD program ; NSF FESD program ; NSF FESD program ; NSF FESD program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; Earth-Life Transitions program ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; NASA Astrobiology Institute ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; key project of the Natural Science Foundation of China ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; program of China Scholarships Council ; Virginia Tech ; Virginia Tech ; Virginia Tech ; Virginia Tech |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92270]  |
| 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 | Cai, Chunfang; Lyons, Timothy W. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 2.Univ Calif Riverside, Dept Earth Sci, Riverside, CA 92521 USA 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 5.Univ St Andrews, Sch Earth & Environm Sci, St Andrews KY16 9AL, Fife, Scotland 6.NASA, Astrobiol Inst, Virtual Planetary Lab, Seattle, WA 98195 USA 7.Virginia Polytech Inst & State Univ, Dept Geosci, Blacksburg, VA 24061 USA 8.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA |
| 推荐引用方式 GB/T 7714 | Chen, Yan,Diamond, Charles W.,Stueken, Eva E.,et al. Coupled evolution of nitrogen cycling and redoxcline dynamics on the Yangtze Block across the Ediacaran-Cambrian transition[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2019,257:243-265. |
| APA | Chen, Yan.,Diamond, Charles W..,Stueken, Eva E..,Cai, Chunfang.,Gill, Benjamin C..,...&Lyons, Timothy W..(2019).Coupled evolution of nitrogen cycling and redoxcline dynamics on the Yangtze Block across the Ediacaran-Cambrian transition.GEOCHIMICA ET COSMOCHIMICA ACTA,257,243-265. |
| MLA | Chen, Yan,et al."Coupled evolution of nitrogen cycling and redoxcline dynamics on the Yangtze Block across the Ediacaran-Cambrian transition".GEOCHIMICA ET COSMOCHIMICA ACTA 257(2019):243-265. |
入库方式： OAI收割
来源：地质与地球物理研究所
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