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Element enrichment and U-series isotopic characteristics of the hydrothermal sulfides at Jade site in the Okinawa Trough

文献类型：期刊论文

作者Zeng ZhiGang1; Yu ShaoXiong1,2; Yin XueBo1; Wang XiaoYuan1,2; Zhang GuoLiang1,2; Wang XiaoMei1,2; Chen DaiGeng1,2
刊名SCIENCE IN CHINA SERIES D-EARTH SCIENCES
出版日期2009-07-01
卷号52期号:7页码:913-924
ISSN号1006-9313
关键词U-series Isotope Trace-element Constituents Hydrothermal Sulfide Jade Site Okinawa Trough
DOI10.1007/s11430-009-0107-y
文献子类Article
英文摘要The geochemical and U-series isotopic characteristics of hydrothermal sulfide samples from the Jade site (127A degrees 04.5'E, 27A degrees 15'N, water depth 1300-1450 m) at Jade site in the Okinawa Trough were analyzed. In the hydrothermal sulfide samples bearing sulfate (samples HOK1 and HOK2), the LREEs are relatively enriched. All the hydrothermal sulfide samples except HOK1 belong to Zn-rich hydrothermal sulfide. In comparison with Zn-rich hydrothermal sulfides from other fields, the contents of Zn, Pb, Ag, Cd, Au and Hg are higher, the contents of Fe, Al, Cr, Co, Ni, Sr, Te, Cs, Ti and U lower, and the (210)Pb radioactivity ratios and (210)Pb/Pb ratios very low. In the hydrothermal sulfide mainly composed of sphalerite, the correlations between rare elements Hf and U, and Hf and Mn as well as that between dispersive elements Ga and Zn, are strongly positive; also the contents of Au and Ag are related to Fe-sulfide, because the low temperature promotes enrichment of Au and Ag. Meanwhile, the positive correlations between Fe and Bi and between Zn and Cd are not affected by the change of mineral assemblage. Based on the (210)Pb/Pb ratios of hydrothermal sulfide samples (3.99x10(-5)-5.42x10(-5)), their U isotopic composition ((238)U content 1.15-2.53 ppm, (238)U activity 1.07-1.87 dpm/g, (234)U activity 1.15-2.09 dpm/g and (234)U/(238)U ratio 1.07-1.14) and their (232)Th and (230)Th contents are at base level, and the chronological age of hydrothermal sulfide at Jade site in the Okinawa Trough is between 200 and 2000 yr.; The geochemical and U-series isotopic characteristics of hydrothermal sulfide samples from the Jade site (127A degrees 04.5'E, 27A degrees 15'N, water depth 1300-1450 m) at Jade site in the Okinawa Trough were analyzed. In the hydrothermal sulfide samples bearing sulfate (samples HOK1 and HOK2), the LREEs are relatively enriched. All the hydrothermal sulfide samples except HOK1 belong to Zn-rich hydrothermal sulfide. In comparison with Zn-rich hydrothermal sulfides from other fields, the contents of Zn, Pb, Ag, Cd, Au and Hg are higher, the contents of Fe, Al, Cr, Co, Ni, Sr, Te, Cs, Ti and U lower, and the Pb-210 radioactivity ratios and Pb-210/Pb ratios very low. In the hydrothermal sulfide mainly composed of sphalerite, the correlations between rare elements Hf and U, and Hf and Mn as well as that between dispersive elements Ga and Zn, are strongly positive; also the contents of Au and Ag are related to Fe-sulfide, because the low temperature promotes enrichment of Au and Ag. Meanwhile, the positive correlations between Fe and Bi and between Zn and Cd are not affected by the change of mineral assemblage. Based on the Pb-210/Pb ratios of hydrothermal sulfide samples (3.99x10(-5)-5.42x10(-5)), their U isotopic composition (U-238 content 1.15-2.53 ppm, U-238 activity 1.07-1.87 dpm/g, U-234 activity 1.15-2.09 dpm/g and U-234/U-238 ratio 1.07-1.14) and their Th-232 and Th-230 contents are at base level, and the chronological age of hydrothermal sulfide at Jade site in the Okinawa Trough is between 200 and 2000 yr.
学科主题Geosciences, Multidisciplinary
语种英语
WOS记录号WOS:000267687400003
公开日期2010-12-22
源URL[http://ir.qdio.ac.cn/handle/337002/3729]  
专题海洋研究所_海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Seafloor Hydrothermal Act Lab, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Zeng ZhiGang,Yu ShaoXiong,Yin XueBo,et al. Element enrichment and U-series isotopic characteristics of the hydrothermal sulfides at Jade site in the Okinawa Trough[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2009,52(7):913-924.
APA Zeng ZhiGang.,Yu ShaoXiong.,Yin XueBo.,Wang XiaoYuan.,Zhang GuoLiang.,...&Chen DaiGeng.(2009).Element enrichment and U-series isotopic characteristics of the hydrothermal sulfides at Jade site in the Okinawa Trough.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,52(7),913-924.
MLA Zeng ZhiGang,et al."Element enrichment and U-series isotopic characteristics of the hydrothermal sulfides at Jade site in the Okinawa Trough".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 52.7(2009):913-924.

入库方式： OAI收割

来源：海洋研究所

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