Boron isotope compositions of fluids and plumes from the Kueishantao hydrothermal field off northeastern Taiwan: Implications for fluid origin and hydrothermal processes | |
Zeng, Zhigang1; Wang, Xiaoyuan1; Chen, Chen-Tung A.2; Yin, Xuebo1; Chen, Shuai1; Ma, Yunqi3; Xiao, Yingkai3 | |
刊名 | MARINE CHEMISTRY |
2013-12-20 | |
卷号 | 157页码:59-66 |
关键词 | Boron Hydrothermal fluid and plume Kueishantao hydrothermal field |
ISSN号 | 0304-4203 |
通讯作者 | Zeng, ZG |
中文摘要 | Boron is a common element in vent fluids of seafloor hydrothermal fields, and it has been used to understand the hydrothermal flux and water-rock interaction in hydrothermal systems. We have measured the boron concentration and isotope composition of seawater, andesite, hydrothermal fluid and plume samples from the Kueishantao hydrothermal field. The delta B-11 value of ambient seawater near the field is 40.05 +/- 0.01 parts per thousand, and the boron concentration is 3.81 mg/L Andesite rocks from the hydrothermal field have an average boron content of 153 ppm. The hydrothermal fluids from the yellow spring and white spring span a small range of delta B-11 values, from 3327 +/- 022 to 36.84 +/- 0.11 parts per thousand, and plumes from both springs also cover a small range, from 37.56 +/- 0.01 to 40.37 +/- 0.21 parts per thousand. Hydrothermal fluids from both springs in the Kueishantao hydrothermal field have variable B enrichments relative to seawater between 7 and 21%. They have B concentrations (4.10-4.64 mg/L) that are slightly higher and delta B-11 values (3327-36.84 parts per thousand) that are lower than those of the hydrothermal plumes (3.94-4.17 mg/L, 37.56-40.37 parts per thousand). Hydrothermal fluids and plumes display a very regular array of data points in a delta B-11-B diagram, suggesting that the boron of hydrothermal fluids and plumes is mainly from seawater and that little of it is, from andesite. This implies that the interaction of subseafloor fluid and -andesite at the Kueishantao hydrothermal field is of short duration. In all the fluids, from springs to hydrothermal plumes, the pH values, B concentrations and B isotopic compositions show significant correlations with each other suggesting that the delta B-11/B and pH/B ratios of hydrothermal plumes have stable values over the small distance form vent to plume (<15 m). Thus the B concentrations and B isotopic compositions of hydrothermal plumes can be used to describe the diffusive processes governing the chemical compositions of hydrothermal plumes in the seawater environment. The water/rock ratios, based on the B concentrations and delta B-11 values, are between 1.96 and 3.63. The hydrothermal flux of boron from the yellow spring into the oceans is between 1.17 x 10(5) mol/yr and 132 x 10(5) mol/yr, and from the white spring it is between 6.69 x 10(4) mol/yr and 7.17 x 10(4) mol/yr, assuming that only andesites are present in the reaction zone. (C) 2013 Elsevier B.V. All rights reserved. |
英文摘要 | Boron is a common element in vent fluids of seafloor hydrothermal fields, and it has been used to understand the hydrothermal flux and water-rock interaction in hydrothermal systems. We have measured the boron concentration and isotope composition of seawater, andesite, hydrothermal fluid and plume samples from the Kueishantao hydrothermal field. The delta B-11 value of ambient seawater near the field is 40.05 +/- 0.01 parts per thousand, and the boron concentration is 3.81 mg/L Andesite rocks from the hydrothermal field have an average boron content of 153 ppm. The hydrothermal fluids from the yellow spring and white spring span a small range of delta B-11 values, from 3327 +/- 022 to 36.84 +/- 0.11 parts per thousand, and plumes from both springs also cover a small range, from 37.56 +/- 0.01 to 40.37 +/- 0.21 parts per thousand. Hydrothermal fluids from both springs in the Kueishantao hydrothermal field have variable B enrichments relative to seawater between 7 and 21%. They have B concentrations (4.10-4.64 mg/L) that are slightly higher and delta B-11 values (3327-36.84 parts per thousand) that are lower than those of the hydrothermal plumes (3.94-4.17 mg/L, 37.56-40.37 parts per thousand). Hydrothermal fluids and plumes display a very regular array of data points in a delta B-11-B diagram, suggesting that the boron of hydrothermal fluids and plumes is mainly from seawater and that little of it is, from andesite. This implies that the interaction of subseafloor fluid and -andesite at the Kueishantao hydrothermal field is of short duration. In all the fluids, from springs to hydrothermal plumes, the pH values, B concentrations and B isotopic compositions show significant correlations with each other suggesting that the delta B-11/B and pH/B ratios of hydrothermal plumes have stable values over the small distance form vent to plume (<15 m). Thus the B concentrations and B isotopic compositions of hydrothermal plumes can be used to describe the diffusive processes governing the chemical compositions of hydrothermal plumes in the seawater environment. The water/rock ratios, based on the B concentrations and delta B-11 values, are between 1.96 and 3.63. The hydrothermal flux of boron from the yellow spring into the oceans is between 1.17 x 10(5) mol/yr and 132 x 10(5) mol/yr, and from the white spring it is between 6.69 x 10(4) mol/yr and 7.17 x 10(4) mol/yr, assuming that only andesites are present in the reaction zone. (C) 2013 Elsevier B.V. All rights reserved. |
学科主题 | Chemistry ; Oceanography |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Chemistry, Multidisciplinary ; Oceanography |
研究领域[WOS] | Chemistry ; Oceanography |
关键词[WOS] | MID-ATLANTIC RIDGE ; VENT FLUIDS ; OCEANIC-CRUST ; GEOCHEMICAL CYCLE ; HOT-SPRINGS ; PH PROXY ; CHEMISTRY ; SYSTEMATICS ; FRACTIONATION ; ARC |
收录类别 | SCI |
原文出处 | 10.1016/j.marchem.2013.09.001 |
语种 | 英语 |
WOS记录号 | WOS:000329271700006 |
公开日期 | 2014-07-17 |
内容类型 | 期刊论文 |
源URL | [http://ir.qdio.ac.cn/handle/337002/16291] |
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, Inst Oceanol, Key Lab Marine Geol & Environm, Seafloor Hydrothermal Act Lab, Qingdao 266071, Peoples R China 2.Natl Sun Yat Sen Univ, Inst Marine Geol & Chem, Kaohsiung 804, Taiwan 3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Peoples R China |
推荐引用方式 GB/T 7714 | Zeng, Zhigang,Wang, Xiaoyuan,Chen, Chen-Tung A.,et al. Boron isotope compositions of fluids and plumes from the Kueishantao hydrothermal field off northeastern Taiwan: Implications for fluid origin and hydrothermal processes[J]. MARINE CHEMISTRY,2013,157:59-66. |
APA | Zeng, Zhigang.,Wang, Xiaoyuan.,Chen, Chen-Tung A..,Yin, Xuebo.,Chen, Shuai.,...&Xiao, Yingkai.(2013).Boron isotope compositions of fluids and plumes from the Kueishantao hydrothermal field off northeastern Taiwan: Implications for fluid origin and hydrothermal processes.MARINE CHEMISTRY,157,59-66. |
MLA | Zeng, Zhigang,et al."Boron isotope compositions of fluids and plumes from the Kueishantao hydrothermal field off northeastern Taiwan: Implications for fluid origin and hydrothermal processes".MARINE CHEMISTRY 157(2013):59-66. |
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