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Authigenic Iron Sulfides Indicate Sea-Level Change on the Continental Shelf: An Illustration From the East China Sea

文献类型：期刊论文

作者Liu, Jianxing2,3; Shi, Xuefa2,3; Liu, Qingsong3,4; Liu, Shengfa2,3; Liu, Yan5; Zhang, Qiang6; Yu, Xiaoxiao1; Fang, Xisheng2,3; Wu, Yonghua2,3; Xu, Taoyu2,3
刊名JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
出版日期2021-03-01
卷号126期号:3页码:14
ISSN号2169-9313
DOI10.1029/2020JB021222
英文摘要Although sea-level is the primary control over sedimentary architectures on continental shelves, deciphering such changes is still challenging, except for the easily recognized transgression-regression cycles. This problem becomes more prominent in sedimentary units with relatively homogenous and fine-grained lithologies that have been deposited over short periods. Here, we focus on a dominantly clayey silt section of a sediment core from the outer shelf of the East China Sea. Detailed rock magnetic and electron microscopy analyses indicate that authigenic greigite (Fe3S4) is the major magnetic component in an almost 4-m-thick interval that was deposited during the late Marine Isotope Stage (MIS) 3, while pyrite (FeS2) is enriched in the underlying middle MIS 3 sediments. According to microfossil analyses, the identified greigite formed in a prodelta setting that was affected by cold coastal currents after the middle MIS 3, when the Taiwan Warm Current and its associated upwelling were prevailing within a middle-outer shelf setting favorable for pyrite formation. Large-amplitude regression occurred subsequently during the MIS 2, limiting sulfate supply and favoring the greigite preservation. Our results, along with the previous studies, demonstrate that both the material and environmental conditions that are crucial to iron sulfide survival have been largely controlled by sea-level change. Moreover, we make a preliminary proposition that a water depth range of 30-60 m is more likely to lead to the enrichment of greigite on continental shelves. We, therefore, provide a promising avenue for the assessment of sea-level change on continental shelves over orbital and even suborbital timescales.
资助项目National Natural Science Foundation of China[41976078] ; National Natural Science Foundation of China[41606075] ; National Natural Science Foundation of China[U1606401] ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology[MGQNLM-TD201903]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000638091600027
出版者AMER GEOPHYSICAL UNION
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology ; Laboratory for Marine Geology, Qingdao Pilot National Laboratory for Marine Science and Technology
源URL[http://ir.iggcas.ac.cn/handle/132A11/101116]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Liu, Jianxing; Shi, Xuefa
作者单位1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou, Peoples R China
2.Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Geol & Metallogeny, Qingdao, Peoples R China
3.Pilot Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao, Peoples R China
4.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Ctr Marine Magnetism, Shenzhen, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Jianxing,Shi, Xuefa,Liu, Qingsong,et al. Authigenic Iron Sulfides Indicate Sea-Level Change on the Continental Shelf: An Illustration From the East China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2021,126(3):14.
APA Liu, Jianxing.,Shi, Xuefa.,Liu, Qingsong.,Liu, Shengfa.,Liu, Yan.,...&Li, Jinhua.(2021).Authigenic Iron Sulfides Indicate Sea-Level Change on the Continental Shelf: An Illustration From the East China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,126(3),14.
MLA Liu, Jianxing,et al."Authigenic Iron Sulfides Indicate Sea-Level Change on the Continental Shelf: An Illustration From the East China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 126.3(2021):14.

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来源：地质与地球物理研究所

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