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Zinc isotope perspective on global carbon cycling during the onset of the late Paleozoic icehouse

文献类型：期刊论文

作者Zhong, Yutian1,2; Chen, Jitao1,3; Liu, Sheng-Ao4; Yuan, Chengshuai5; Gao, Biao1; Isson, Terry T.6; Algeo, Thomas J.7,8,9; Sheng, Qingyi1; Chen, Bo1; Luo, Genming
刊名GEOLOGY
出版日期2024-10-21
页码6
ISSN号0091-7613
DOI10.1130/G52447.1
通讯作者Chen, Jitao(jtchen@nigpas.ac.cn)
英文摘要The onset of the late Paleozoic icehouse coincided with a large global carbon-cycle perturbation (represented by the mid-Tournaisian carbon isotope excursion [TICE]), although the underlying cause of this isotopic event remains uncertain. Zinc (Zn), an essential micronutrient for plankton, has an isotopic composition (delta Zn-66) in seawater that is sensitive to subtle fluctuations in marine carbon (C) cycling. Here, we investigated C cycling during the TICE using paired carbonate delta Zn-66-delta C-13 and organic delta C-13 records from two widely spaced sections in South China. These records reveal coupling between delta Zn-66 and delta C-13 over an similar to 4 m.y. interval in the form of two positive excursions (Peaks I and II) separated by a negative shift (interpeak). Peak I is attributed to enhanced marine primary productivity (MPP), which was stimulated by increased micronutrient supply linked to enhanced silicate weathering and/or upwelling. The interpeak may record oxidation of remobilized organic matter from continental shelves exposed by glacio-eustatic sea-level fall, which, in turn, promoted MPP again and resulted in Peak II. Thus, the TICE records complex climate-carbon cycle feedbacks that may have led to large-scale organic carbon burial and driven stepwise cooling, marking the onset of a sustained late Paleozoic icehouse climate.
WOS关键词OCEANIC MASS-BALANCE ; ORGANIC-CARBON ; BURIAL ; ZN
资助项目National Natural Science Foundation of China[42293280] ; National Natural Science Foundation of China[42072035]
WOS研究方向Geology
语种英语
WOS记录号WOS:001338459100001
出版者GEOLOGICAL SOC AMER, INC
资助机构National Natural Science Foundation of China
源URL[http://ir.nigpas.ac.cn/handle/332004/44456]  
专题中国科学院南京地质古生物研究所
通讯作者Chen, Jitao
作者单位1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, Nanjing Coll, Nanjing 211135, Peoples R China
4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
5.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
6.Univ Waikato Tauranga, Te Aka Matuatua, Tauranga 3110, New Zealand
7.Univ Cincinnati, Dept Geosci, Cincinnati, OH 45221 USA
8.China Univ Geosci, State Key Labs Biogeol & Environm Geol & Geol Proc, Wuhan 430074, Peoples R China
9.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploitat, Chengdu 610059, Peoples R China
10.Nanjing Univ, Frontiers Sci Ctr Crit Earth Mat Cycling, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210023, Peoples R China
推荐引用方式
GB/T 7714		 Zhong, Yutian,Chen, Jitao,Liu, Sheng-Ao,et al. Zinc isotope perspective on global carbon cycling during the onset of the late Paleozoic icehouse[J]. GEOLOGY,2024:6.
APA Zhong, Yutian.,Chen, Jitao.,Liu, Sheng-Ao.,Yuan, Chengshuai.,Gao, Biao.,...&Qie, Wenkun.(2024).Zinc isotope perspective on global carbon cycling during the onset of the late Paleozoic icehouse.GEOLOGY,6.
MLA Zhong, Yutian,et al."Zinc isotope perspective on global carbon cycling during the onset of the late Paleozoic icehouse".GEOLOGY (2024):6.

入库方式： OAI收割

来源：南京地质古生物研究所

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