Mineralogy, geochemistry, and sulfur isotope characteristics of sediment-hosted hydrothermal sulfide minerals from the southern Okinawa Trough

doi:10.1007/s13131-021-1836-9

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

	Mineralogy, geochemistry, and sulfur isotope characteristics of sediment-hosted hydrothermal sulfide minerals from the southern Okinawa Trough
	Yang, Yamin 2,3; Zeng, Zhigang 1,2,3,4; Yin, Xuebo 2; Wang, Xiaoyuan 2; Chen, Shuai 2; Qi, Haiyan 2; Chen, Zuxing 2; Zhu, Bowen 2,3
刊名	ACTA OCEANOLOGICA SINICA
	2021-10-01
卷号	40 期号:10 页码:129-143
关键词	mineralogy sulfur isotopes sediment-hosted hydrothermal sulfides southern Okinawa Trough
ISSN号	0253-505X
DOI	10.1007/s13131-021-1836-9
通讯作者	Zeng, Zhigang(zgzeng@ms.qdio.ac.cn)
英文摘要	Studies of the mineralogy and sulfur isotope composition of sediment-hosted hydrothermal sulfide minerals in cores are important for understanding the seafloor mineralization environment and material source and reconstructing the hydrothermal history. However, the source of ore-forming materials and the history of hydrothermal activity in the southern Okinawa Trough (SOT) remain unclear. Here, the mineralogy and sulfur isotope characteristics of sulfides from gravity core HOBAB4-S2, collected between the Yonaguni Knoll IV hydrothermal field (HF) and the Tangyin HF, was investigated. Enrichments in Zn (up to 321x10(-6)), Cu (up to 73.7x10(-6)), and Pb (up to 160x10(-6)) and the presence of pyrite, galena, pyrrhotite and minor sphalerite and chalcopyrite provide evidence for the input of hydrothermal materials into the sediments. The pyrite morphologies include disseminated cubic, pentagonal dodecahedron, and framboidal forms. Except for minor framboidal pyrite, euhedral pyrite from core HOBAB4-S2 is mainly of hydrothermal origin with Co/Ni ratios >1 and S/Fe atomic ratios <2 in the Cu-Zn-Pb-rich layers. The occurrences of hexagonal pyrrhotite, high-Co (up to 0.17%) pyrite and high-Fe sphalerite indicate that the hydrothermal precipitates formed at medium-high temperatures and low-sulfur fugacity (fS(2)) environments. The delta S-34 values of sulfides (0.21 parts per thousand-3.45 parts per thousand) with low- fS(2) mineral assemblages (e.g., pyrrhotite +/- high-Fe sphalerite) in the core are significantly lower than those of magmatic rocks and seawater, indicating possible incorporation of previously formed biogenic sulfur in the sediment. Combined with the age model of the core, it is suggested that hydrothermal activity likely began in the Tangyin HF before AD 1 445-1 483 and that at least three active episodes may have occurred since then.
资助项目	National Natural Science Foundation of China[91958213] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42020402] ; National Programma on Global Change and Air-Sea Interaction[GASI-GEOGE-02] ; International Partnership Program of the Chinese Academy of Sciences[133137KYSB20170003] ; Special Fund for the Taishan Scholar Program of Shandong Province[ts201511061] ; National Key Basic Research Program of China[2013CB429700]
WOS研究方向	Oceanography
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000724005600012
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/177275]
专题	海洋研究所_海洋地质与环境重点实验室
通讯作者	Zeng, Zhigang
作者单位	1.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Mineral Resources, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Yang, Yamin,Zeng, Zhigang,Yin, Xuebo,et al. Mineralogy, geochemistry, and sulfur isotope characteristics of sediment-hosted hydrothermal sulfide minerals from the southern Okinawa Trough[J]. ACTA OCEANOLOGICA SINICA,2021,40(10):129-143.
APA	Yang, Yamin.,Zeng, Zhigang.,Yin, Xuebo.,Wang, Xiaoyuan.,Chen, Shuai.,...&Zhu, Bowen.(2021).Mineralogy, geochemistry, and sulfur isotope characteristics of sediment-hosted hydrothermal sulfide minerals from the southern Okinawa Trough.ACTA OCEANOLOGICA SINICA,40(10),129-143.
MLA	Yang, Yamin,et al."Mineralogy, geochemistry, and sulfur isotope characteristics of sediment-hosted hydrothermal sulfide minerals from the southern Okinawa Trough".ACTA OCEANOLOGICA SINICA 40.10(2021):129-143.