| Tide-influenced acidic hydrothermal system offshore NE Taiwan | |
| Chen, CTA; Zeng, ZG; Kuo, FW; Yang, TYF; Wang, BJ; Tu, YY | |
| 2005-12-15 | |
| 发表期刊 | CHEMICAL GEOLOGY
 |
| ISSN | 0009-2541 |
| 卷号 | 224期号:1-3页码:69-81 |
| 文章类型 | Article |
| 摘要 | Elemental sulfur and hydrogen sulfide emitted offshore of northeastern Taiwan known to local fishermen for generations, but never studied until recently, are found to have originated from a cluster of shallow (< 30 m depth) hydrothermal vents. Among the mounds is a massive 6 m high chimney with a diameter of 4 m at the base composed of almost pure sulfur and discharging hydrothermal fluid containing sulfur particles. The sulfur in the chimney has a delta(34)S= 1.1 parts per thousand that is isotopically lighter than seawater. A yellow smoker at shallow depths with such characteristics has never been reported on anywhere else in the world. Gas discharges from these vents are dominated by CO2 (> 92%) with small amounts of H2S. Helium isotopic ratios 7.5 times that of air indicate that these gases originate from the mantle. High temperature hydrothermal fluids have measured temperatures of 78-116 degrees C and pH (25 degrees C) values as low as 1.52, likely the lowest to be found in world records. Low temperature vents (30-65 degrees C) have higher pH values. Continuous temperature records from one vent show a close correlation with diumal tides, suggesting rapid circulation of the hydrothermal fluids. (c) 2005 Elsevier B.V. All rights reserved.; Elemental sulfur and hydrogen sulfide emitted offshore of northeastern Taiwan known to local fishermen for generations, but never studied until recently, are found to have originated from a cluster of shallow (< 30 m depth) hydrothermal vents. Among the mounds is a massive 6 m high chimney with a diameter of 4 m at the base composed of almost pure sulfur and discharging hydrothermal fluid containing sulfur particles. The sulfur in the chimney has a delta(34)S= 1.1 parts per thousand that is isotopically lighter than seawater. A yellow smoker at shallow depths with such characteristics has never been reported on anywhere else in the world. Gas discharges from these vents are dominated by CO2 (> 92%) with small amounts of H2S. Helium isotopic ratios 7.5 times that of air indicate that these gases originate from the mantle. High temperature hydrothermal fluids have measured temperatures of 78-116 degrees C and pH (25 degrees C) values as low as 1.52, likely the lowest to be found in world records. Low temperature vents (30-65 degrees C) have higher pH values. Continuous temperature records from one vent show a close correlation with diumal tides, suggesting rapid circulation of the hydrothermal fluids. (c) 2005 Elsevier B.V. All rights reserved. |
| 关键词 | Hydrothermal Vents Taiwan Yellow Smoker Acidity Tides Phase Separation |
| 学科领域 | Geochemistry & Geophysics |
| DOI | 10.1016/j.chemgeo.2005.07.022 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000234118800005 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/3738 |
| 专题 | 海洋地质与环境重点实验室 |
| 作者单位 | 1.Natl Sun Yat Sen Univ, Inst Marine Geol & Chem, Kaohsiung 804, Taiwan 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China 3.Natl Taiwan Univ, Taipei 10764, Taiwan 4.Taiwan Power Co, Taipei, Taiwan |
| 推荐引用方式 GB/T 7714 | Chen, CTA,Zeng, ZG,Kuo, FW,et al. Tide-influenced acidic hydrothermal system offshore NE Taiwan[J]. CHEMICAL GEOLOGY,2005,224(1-3):69-81. |
| APA | Chen, CTA,Zeng, ZG,Kuo, FW,Yang, TYF,Wang, BJ,&Tu, YY.(2005).Tide-influenced acidic hydrothermal system offshore NE Taiwan.CHEMICAL GEOLOGY,224(1-3),69-81. |
| MLA | Chen, CTA,et al."Tide-influenced acidic hydrothermal system offshore NE Taiwan".CHEMICAL GEOLOGY 224.1-3(2005):69-81. |
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