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Silica-rich seawater in the early Cambrian: Sedimentological evidence from bedded cherts

文献类型：期刊论文

作者Zhou, Xiqiang3,4,5; Chen, Daizhao3,4,5; Zhang, Liyu3,5; Tang, Dongjie2; Guo, Chuan1,5
刊名TERRA NOVA
出版日期2021-05-25
页码8
关键词silica‐ rich seawater early Cambrian bedded cherts
ISSN号0954-4879
DOI10.1111/ter.12541
英文摘要The effects and timing of the evolution of siliceous sponge and radiolarians on the mode of silica burial and oceanic silica cycling in the early Cambrian are still controversial. Bedded cherts of the lower Cambrian Yurtus Formation deposited in a subtidal shelf environment. They display diagnostic sedimentary features, including intraclastic chert grains, edgewise chert breccias, weakly compacted grains and rip-up clasts, and rapid silica cementation, collectively indicating primary and very early silicification at and near the sediment-water interface. This depositional mode contrasts with Phanerozoic biogenic cherts but is comparable with that of Precambrian cherts precipitated from silica-rich seawater. The Yurtus cherts therefore provide direct and compelling sedimentological evidence of the continuation of silica-rich seawater into the early Cambrian, consistent with the extensive coeval chert depositions elsewhere. These results contrast with the long-held view of rapid decline in seawater silica concentrations in the earliest Phanerozoic, and elucidate coeval Si-coupled geochemical cycling, silica-biomineralization and fossil preservation.
WOS关键词SOUTH CHINA ; BIOGENIC SILICA ; TARIM BASIN ; SILICIFICATION ; MICROFOSSILS ; OCEAN ; PRESERVATION ; DEPOSITION ; BOUNDARY ; YURTUS
资助项目National Natural Science Foundation of China[41502117] ; National Natural Science Foundation of China[41772112] ; Key Research Program of the Institute of Geology & Geophysics, CAS[IGGCAS--201905] ; China Postdoctoral Science Foundation[2015M581166]
WOS研究方向Geology
语种英语
WOS记录号WOS:000654042900001
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 ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; Key Research Program of the Institute of Geology & Geophysics, CAS ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/101195]  
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Zhou, Xiqiang
作者单位1.Guizhou Univ, Coll Resource & Environm Engn, Guiyang, Peoples R China
2.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll 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 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Xiqiang,Chen, Daizhao,Zhang, Liyu,et al. Silica-rich seawater in the early Cambrian: Sedimentological evidence from bedded cherts[J]. TERRA NOVA,2021:8.
APA Zhou, Xiqiang,Chen, Daizhao,Zhang, Liyu,Tang, Dongjie,&Guo, Chuan.(2021).Silica-rich seawater in the early Cambrian: Sedimentological evidence from bedded cherts.TERRA NOVA,8.
MLA Zhou, Xiqiang,et al."Silica-rich seawater in the early Cambrian: Sedimentological evidence from bedded cherts".TERRA NOVA (2021):8.

入库方式： OAI收割

来源：地质与地球物理研究所

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