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Redox fluctuations and organic accumulation on the outer shelf of the Early Cambrian (Ages 2-3) Yangtze sea: Geochemical records on a seaward submarine sill

文献类型：期刊论文

作者Zhang, Gongjing3,4,5; Chen, Daizhao3,4,5; Ding, Yi2,3,4; Huang, Taiyu1,3,4
刊名GEOLOGICAL JOURNAL
出版日期2020-11-06
页码17
关键词Early Cambrian Niutitang Formation oceanic upwelling redox states South China submerged sill
ISSN号0072-1050
DOI10.1002/gj.4031
英文摘要The Early Cambrian was a critical interval marked by dramatic oceanic, geochemical, and biological changes in Earth's history. Although numerous studies have documented oceanic redox changes and revealed a heterogeneous pattern from the inner shelf to outer shelf margin in the Yangtze Block, less attention has been paid to their palaeogeographic-specific occurrences, particularly in the deeper basinal regime during that time. To better understand marine redox variations and organic accumulation across the entire outer shelf-basin transect, we selected a coeval organic-rich section (i.e., Guantang section, western Hunan) deposited on a farther seaward submarine sill for a comparison. Integrated geochemical data of iron speciation, redox-sensitive trace element [i.e., molybdenum (Mo) and uranium (U)] concentrations and total organic carbon (TOC) contents as well as P/Al and Ba/Alratios, in combination with previously published data from the outer shelf slope-basin, reveal an overall high TOC content on the sill and further attest to the occurrence of a fluctuating euxinic water wedge overlying the deep ferruginous water on the outer shelf slope to basin transect in the presence of oceanic upwelling system. The fluctuating euxinic watermass could be dynamically advanced upslope and retreated downslope in the pace of sea-level rise and fall. All these signify the critical roles of palaeogeographic setting and eustatic changes in controlling the spatiotemporal productivity and redox fluctuations in the Yangtze sea during the Early Cambrian.
WOS关键词PB ZIRCON AGES ; SOUTH CHINA CONSTRAINTS ; WATER-COLUMN ; SEDIMENTARY-ROCKS ; FERRUGINOUS CONDITIONS ; STEPWISE OXYGENATION ; CARBON ; IRON ; OCEAN ; PLATFORM
资助项目National Natural Science Foundation of China[91755210] ; National Key Research and Development Program of China[2017YFC0603103]
WOS研究方向Geology
语种英语
WOS记录号WOS:000586776900001
出版者WILEY
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/98672]  
专题地质与地球物理研究所_中国科学院新生代地质与环境重点实验室
通讯作者Chen, Daizhao
作者单位1.China Natl Adm Coal Geol, Gen Prospecting Inst, Beijing, Peoples R China
2.Chengdu Univ Technol, Postdoctoral Res Stn Geol Resource & Geol Engn, Chengdu, Peoples R China
3.Univ Chinese Acad Sci, Sch Earth & Planetary Sci, Beijing, Peoples R China
4.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Gongjing,Chen, Daizhao,Ding, Yi,et al. Redox fluctuations and organic accumulation on the outer shelf of the Early Cambrian (Ages 2-3) Yangtze sea: Geochemical records on a seaward submarine sill[J]. GEOLOGICAL JOURNAL,2020:17.
APA Zhang, Gongjing,Chen, Daizhao,Ding, Yi,&Huang, Taiyu.(2020).Redox fluctuations and organic accumulation on the outer shelf of the Early Cambrian (Ages 2-3) Yangtze sea: Geochemical records on a seaward submarine sill.GEOLOGICAL JOURNAL,17.
MLA Zhang, Gongjing,et al."Redox fluctuations and organic accumulation on the outer shelf of the Early Cambrian (Ages 2-3) Yangtze sea: Geochemical records on a seaward submarine sill".GEOLOGICAL JOURNAL (2020):17.

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来源：地质与地球物理研究所

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