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Nitrogen cycle perturbations linked to metazoan diversification during the early Cambrian

文献类型：期刊论文

作者Xu, Dongtao5; Wang, Xinqiang4,5; Shi, Xiaoying4,5; Tang, Dongjie3,4; Zhao, Xiangkuan5; Feng, Lianjun2; Song, Huyue1
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2020-01-15
卷号538页码:12
关键词South China Niutitang formation Nitrogen isotope Ocean redox Cambrian explosion
ISSN号0031-0182
DOI10.1016/j.palaeo.2019.109392
英文摘要The rapid diversification of metazoans during the late Ediacaran-early Cambrian is one of the most remarkable evolutionary events in Earth history. However, the triggering mechanism remains highly contentious, particularly concerning the relationship of this biological event to contemporaneous changes in ocean redox and nutrient cycling. In this study, we report new bulk nitrogen isotope (delta N-15) and organic carbon isotope (delta C-13(org)) data from the lower Cambrian Niutitang Formation in two deep-water sections in South China to provide a better understanding of the relationship of the nitrogen cycle, ocean redox, and biological evolution during this key period. The delta N-15 data from two study sections are characterized by consistently low values (-1 parts per thousand to + 2 parts per thousand) throughout the Niutitang Formation despite large variations in delta C-13(org). We interpret these low delta N-15 values to have resulted from assimilation of recycled ammonium (NH4+) and N-2 fixation. Compilation of available delta N-15 data reveals large temporal and spatial delta N-15 variations from - 1 parts per thousand to + 7 parts per thousand in time-equivalent strata in South China. Such delta N-15 variations imply the co-existence of aerobic and anaerobic N cycles and highly heterogeneous ocean redox conditions during the early Cambrian in South China, which is consistent with inferences from other geochemical proxies. Temporal fluctuations and spatial heterogeneity in ocean redox conditions may have controlled the distribution and evolution of metazoans during the early Cambrian.
WOS关键词ORGANIC-CARBON ISOTOPE ; SOUTH CHINA EVIDENCE ; EDIACARAN DOUSHANTUO FORMATION ; PB ZIRCON AGES ; YANGTZE PLATFORM ; BLACK SHALES ; REDOX VARIATIONS ; TRACE-ELEMENTS ; NORTH PACIFIC ; SURFACE OCEAN
资助项目National Natural Science Foundation of China[41872032] ; National Natural Science Foundation of China[41672336] ; Fundamental Research Funds for the Central Universities[2652017228] ; State Key Laboratory of Biogeology and Environmental Geology[GBLZ1802]
WOS研究方向Physical Geography ; Geology ; Paleontology
语种英语
WOS记录号WOS:000508751800043
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 ; State Key Laboratory of Biogeology and Environmental Geology ; State Key Laboratory of Biogeology and Environmental Geology ; 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 ; State Key Laboratory of Biogeology and Environmental Geology ; State Key Laboratory of Biogeology and Environmental Geology ; 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 ; State Key Laboratory of Biogeology and Environmental Geology ; State Key Laboratory of Biogeology and Environmental Geology ; 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 ; State Key Laboratory of Biogeology and Environmental Geology ; State Key Laboratory of Biogeology and Environmental Geology
源URL[http://ir.iggcas.ac.cn/handle/132A11/95688]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Wang, Xinqiang; Shi, Xiaoying
作者单位1.China Univ Geosci Wuhan, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
3.China Univ Geosci Beijing, Inst Earth Sci, Beijing 100083, Peoples R China
4.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
5.China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Dongtao,Wang, Xinqiang,Shi, Xiaoying,et al. Nitrogen cycle perturbations linked to metazoan diversification during the early Cambrian[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,538:12.
APA Xu, Dongtao.,Wang, Xinqiang.,Shi, Xiaoying.,Tang, Dongjie.,Zhao, Xiangkuan.,...&Song, Huyue.(2020).Nitrogen cycle perturbations linked to metazoan diversification during the early Cambrian.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,538,12.
MLA Xu, Dongtao,et al."Nitrogen cycle perturbations linked to metazoan diversification during the early Cambrian".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 538(2020):12.

入库方式： OAI收割

来源：地质与地球物理研究所

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