Holocene climate regulates multiple sulfur isotope compositions of pyrite in the East China sea via sedimentation rate

doi:10.1016/j.marpetgeo.2023.106687

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋地质与环境重点实验室

	Holocene climate regulates multiple sulfur isotope compositions of pyrite in the East China sea via sedimentation rate
	Yu, Xiaoxiao 2,6; Liu, Xiting 1,3; Wei, Gangjian 2,6; Li, Anchun 5; Lin, Mang 2,4,6
刊名	MARINE AND PETROLEUM GEOLOGY
	2024-03-01
卷号	161 页码:12
关键词	FeS 2 Delta(33) s Anaerobic Oxidation of methane Bacterial sulfate reduction Sulfur cycle Climate change
ISSN号	0264-8172
DOI	10.1016/j.marpetgeo.2023.106687
通讯作者	Liu, Xiting(liuxiting@ouc.edu.cn) ; Lin, Mang(linm@gig.ac.cn)
英文摘要	Marine authigenic pyrite sulfur isotope (delta S-34(pyr)) is one of the most important proxies for reconstructing remarkable changes of Earth's surface in deep time. Recent observations of unexpectedly large delta S-34(pyr) variations in Quaternary sediments complicate the application of this isotopic proxy, and a mechanistic understanding of such variabilities is needed. In this study, we measured multiple sulfur isotopic compositions of pyrite in well dated sediments spanning the last 7500 years from the East China Sea (ECS) inner shelf to study the mechanism how Holocene climate controls pyrite sulfur isotopic compositions. We found that variabilities of pyrite multiple sulfur isotopes, delta S-34(pyr) and Delta S-33(pyr) (ranging from -38.3 parts per thousand to 2.3 parts per thousand and from -0.01 parts per thousand to 0.21 parts per thousand, respectively) are significantly correlated with large fluctuations of sedimentation rates (0.03-2.09 cm/yr). In tandem with box model calculations and compiled data, the large delta S-34(pyr) variations up to 40 parts per thousand are primarily ascribed to fluctuated anaerobic oxidation of methane coupled sulfate reduction (AOM-SR). Further analyses suggest that heightened distillation of interstitial sulfate, likely propelled by high methane flux coupled with increased sedimentation rates, can produce such negatively correlated delta S-34(pyr)-Delta S-33(pyr) pattern and large variations in delta S-34(pyr). Possible changes in isotope fractionation factors caused by varied cell-specific sulfate reduction rates result in a maximum delta S-34(pyr) variation of <20 parts per thousand and therefore play a minor role in the large variation in delta S-34(pyr) (>40 parts per thousand). The major and minor isotopic compositions of pyrite align with sulfide produced through pure sulfate reduction, indicating little evidence of additional oxidative sulfur cycling. Sedimentation rates in the ECS are controlled by the East Asian winter monsoon that influences the sediment transport capacity from longshore currents on a multicentennial timescale, and also by the coupled East Asian summer monsoon that affects the sediment availability from the Yangtze River on a millennial timescale. Holocene climate changes alter sediment supplies at the ECS and therefore play a vital role in controlling multiple sulfur isotope compositions of sedimentary pyrite in this region. This study has the potential to provide new insights into delta S-34 excursions in seawater sulfate that occurred during periods of notable acceleration in sedimentation rates throughout the geological history.
WOS关键词	DRIVEN ANAEROBIC OXIDATION ; SULFATE REDUCTION RATES ; ORGANIC-MATTER ; MARINE-SEDIMENTS ; IRON SULFIDE ; INNER SHELF ; FRACTIONATION ; METHANE ; CARBON ; MODEL
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:001159082800001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/184502]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Liu, Xiting; Lin, Mang
作者单位	1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol & Environm, Qingdao 266237, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting, Qingdao 266100, Peoples R China 4.Univ Chinese Acad Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 6.Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Yu, Xiaoxiao,Liu, Xiting,Wei, Gangjian,et al. Holocene climate regulates multiple sulfur isotope compositions of pyrite in the East China sea via sedimentation rate[J]. MARINE AND PETROLEUM GEOLOGY,2024,161:12.
APA	Yu, Xiaoxiao,Liu, Xiting,Wei, Gangjian,Li, Anchun,&Lin, Mang.(2024).Holocene climate regulates multiple sulfur isotope compositions of pyrite in the East China sea via sedimentation rate.MARINE AND PETROLEUM GEOLOGY,161,12.
MLA	Yu, Xiaoxiao,et al."Holocene climate regulates multiple sulfur isotope compositions of pyrite in the East China sea via sedimentation rate".MARINE AND PETROLEUM GEOLOGY 161(2024):12.