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Gas discharges from the Kueishantao hydrothermal vents, offshore northeast Taiwan: Implications for drastic variations of magmatic/hydrothermal activities
Chen, Xue-Gang1; Lyu, Shuang-Shuang2; Zhang, Ping-Ping1; Yu, Ming-Zhen1; Chen, Chen-Tung Arthur3; Chen, Yun-Jie1,4; Li, Xiaohu5; Jin, Aimin1; Zhang, Hai-Yan6; Duan, Wei1; Ye, Ying1; Duan, Wei(Zhejiang Univ, Ocean Coll, Zhoushan 316021, Peoples R China)
2018-03-15
Source PublicationJOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
Volume353Pages:1-10
Contribution Rank第1完成单位 ; 第2完成单位 ; 第3完成单位 ; 第4完成单位 ; 第5完成单位 ; 第6完成单位
AbstractThe chemical compositions of gas discharges from the Kueishantao (KST) hydrothermal field changed dramatically from 2000 to 2014. In this study, we established a gas mixing model for the KST gases. The N-2, Ar, and CO2 contents were mixed from a magmatic endmember with CO2 of about 990 mmol/mol, a hydrothermal and an atmospheric endmember enriched in N-2 and Ar. More than 71% KST gas components were mantle-derived/magmatic The calculated endmember N-2/Ar ratio and Ar contents of the hydrothermal endmember (percolated fluid) are about 140 and 5.28-5.52 mmol/mol, respectively. This relatively elevated N-2/Ar ratio was probably caused by the thermogenic addition of N-2. The log(CH4/CO2) values of the KST gas samples correlate well with the mixing temperature that estimated from the mixing ratio between the percolated fluid and the magmatic endmember. It is indicated that the KST CH4 and CO2 may have attained chemical equilibrium. The temporal variations of the KST gas compositions are determined by the mixing ratio, which is dependent on the magmatic activity underneath the KST field. With the decreasing of magmatic activity since 2005, the proportion of the hydrothermal endmember increased, along with the increasing of N-2, Ar, and CH4 contents. This study proposed an effective model to quantitatively assess the sources of gas components discharged from submarine hydrothermal vents. In addition, it is suggested that the mixing between a magmatic and a hydrothermal endmember may play an important role in the concentrations of CO2 and CH4 in hydrothermal gas discharges. (C) 2017 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordKueishantao Model Hydrothermal Vent Hydrocarbon Co2 Magmatic Activity
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jvolgeores.2018.01.013
URL查看原文
Indexed BySCI
Language英语
WOS KeywordHYDROGEN ISOTOPE SYSTEMATICS ; MID-ATLANTIC RIDGE ; ABIOTIC METHANE ; FUMAROLIC GAS ; RAPID CHANGES ; ORIGIN ; FLUIDS ; CARBON ; HYDROCARBONS ; RATIOS
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000429184300001
Citation statistics
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/5934
Collection深海科学研究部_深海极端环境模拟研究实验室
Corresponding AuthorDuan, Wei; Duan, Wei(Zhejiang Univ, Ocean Coll, Zhoushan 316021, Peoples R China)
Affiliation1.Zhejiang Univ, Ocean Coll, Zhoushan 316021, Peoples R China
2.Zhejiang Inst Geol & Mineral Resources, Hangzhou 310007, Zhejiang, Peoples R China
3.Natl Sun Yat Sen Univ, Dept Oceanog, Kaohsiung 80424, Taiwan
4.Univ Aberdeen, Dept Geol & Petr Geol, Aberdeen AB24 3UE, Scotland
5.State Ocean Adm, Key Lab Submarine Geosci, Hangzhou 310012, Zhejiang, Peoples R China
6.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanyo 572000, Peoples R China
Recommended Citation
GB/T 7714
Chen, Xue-Gang,Lyu, Shuang-Shuang,Zhang, Ping-Ping,et al. Gas discharges from the Kueishantao hydrothermal vents, offshore northeast Taiwan: Implications for drastic variations of magmatic/hydrothermal activities[J]. JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH,2018,353:1-10.
APA Chen, Xue-Gang.,Lyu, Shuang-Shuang.,Zhang, Ping-Ping.,Yu, Ming-Zhen.,Chen, Chen-Tung Arthur.,...&Duan, Wei.(2018).Gas discharges from the Kueishantao hydrothermal vents, offshore northeast Taiwan: Implications for drastic variations of magmatic/hydrothermal activities.JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH,353,1-10.
MLA Chen, Xue-Gang,et al."Gas discharges from the Kueishantao hydrothermal vents, offshore northeast Taiwan: Implications for drastic variations of magmatic/hydrothermal activities".JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH 353(2018):1-10.
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