Tide-influenced acidic hydrothermal system offshore NE Taiwan

doi:10.1016/j.chemgeo.2005.07.022

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

	Tide-influenced acidic hydrothermal system offshore NE Taiwan
	Chen, CTA ; Zeng, ZG ; Kuo, FW ; Yang, TYF ; Wang, BJ ; Tu, YY
刊名	CHEMICAL GEOLOGY
	2005-12-15
卷号	224 期号:1-3 页码:69-81
关键词	Hydrothermal Vents Taiwan Yellow Smoker Acidity Tides Phase Separation
ISSN号	0009-2541
DOI	10.1016/j.chemgeo.2005.07.022
文献子类	Article
英文摘要	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.
学科主题	Geochemistry & Geophysics
语种	英语
WOS记录号	WOS:000234118800005
公开日期	2010-12-22
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/3739]
专题	海洋研究所_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.