NewhydrothermalfieldsfoundalongtheSWIRduringtheLegs5-7oftheChineseDY115-20Expedition

Prévia do material em texto

See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/260449678
New hydrothermal fields found along the SWIR during the Legs 5-7 of the
Chinese DY115-20 Expedition
Article · December 2009
CITATIONS
7
READS
145
27 authors, including:
Some of the authors of this publication are also working on these related projects:
ocean engineer View project
hydrothermal sediment; hydrothermal plume particle View project
Chunhui Tao
State Oceanic Administration
77 PUBLICATIONS   458 CITATIONS   
SEE PROFILE
Guanghai Wu
State Oceanic Administration
18 PUBLICATIONS   210 CITATIONS   
SEE PROFILE
Jun Ni
UNSW Sydney
20 PUBLICATIONS   505 CITATIONS   
SEE PROFILE
Xin Su
China University of Geosciences (Beijing)
46 PUBLICATIONS   1,240 CITATIONS   
SEE PROFILE
All content following this page was uploaded by Jijiang Lei on 16 February 2016.
The user has requested enhancement of the downloaded file.
2009 Fall Meeting 
Search Results 
Cite abstracts as Author(s) (2009), Title, Eos Trans. AGU, 
90(52), Fall Meet. Suppl., Abstract xxxxx-xx 
Your query was: 
ti=hydrothermal tao 
 
HR: 0800h 
AN: OS21A-1150 
TI: New hydrothermal fields found along the 
SWIR during the Legs 5-7 of the Chinese 
DY115-20 Expedition 
AU: Tao, C 
EM: taochunhuimail@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Wu, G 
EM: wugh6866@yahoo.com.cn 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Ni, J 
EM: jianyuni@sio.org.cn 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Zhao, H 
EM: hongqiaozhao@yahoo.com.cn 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Su, X 
EM: xsu@cugb.edu.cn 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Zhou, N 
EM: zhouningmail@163.com 
AF: China Ocean Mineral Resources R & D 
Association, Beijing, China 
AU: Li, J 
EM: li_jiabiao@sina.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Chen, Y J 
EM: johnyc@pku.edu.cn 
AF: Office of InterRidge China, Peking University, 
Beijing, China 
AU: Cui, R 
EM: cuiroyong@163.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Deng, X 
EM: dengxiguang@163.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Egorov, I 
EM: ieg@mail.ru 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Dobretsova, I G 
EM: Dobretsova@163.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Sun, G 
EM: sunguihua@163.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Qiu, Z 
EM: zhongyan_qiu@yahoo.com.cn 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Deng, X 
EM: xmdeng_cugb@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Zhou, J 
EM: jpzhou2001@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Gu, C 
EM: choora@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Li, J 
EM: lijiwei@163.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Yang, J 
EM: yangjunyi@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Zhang, K 
EM: zhangkai@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Wu, X 
EM: wuxuewen@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Chen, Z 
EM: chenzhigang@163.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Lei, J 
EM: leijijiang@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Huang, W 
EM: sio_huangwei@126.com 
AF: DY115-20 Legs 5-7 Scientific Party, Hangzhou, 
China 
AU: Zhou, P 
EM: zbf0032@sohu.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Ding, T 
EM: dingtao@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Jin, W 
EM: jinweifang@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Li, H 
EM: huaiming_lee@163.com 
AF: Key Laboratory of Submarine Geosciences, 
Second Institute of Oceanography,SOA, Hangzhou, 
China 
AU: Lin, J 
EM: jlin@whoi.edu 
AF: Woods Hole Oceanographic Institution, Woods 
Hole, MA, United States 
AB: Six new hydrothermal fields and two water 
column hydrothermal anomalies have been found 
along the Southwest Indian Ridge (SWIR) during the 
Legs 5-7 of the Chinese DY115-20 expedition on 
R/V Dayangyihao from 2008 to 2009. An inactive 
hydrothermal field was found at 50.5°E (50.467°E, 
37.658°S, 1,739m), the shallowest portion of 
Segment 27. Recovered samples include sulfide and 
opal chimneys, metalliferous sediments, basalt and 
relicts of hydrothermal vent-fauna. This field appears 
to become inactive recently. A carbonate field was 
found near 51°E (50.853°E, 37.650°S; 51°E, 37.608°S). 
This field extends about 15-km long in parallel to the 
ridge axis and locates at about 10-km off the ridge 
axis. Abundant different live and dead faunas were 
found. Many carbonate material and basalt samples 
were recovered. This new basalt-hosted carbonate 
field could represent a new category of ridge 
hydrothermal system. A hydrothermal field was 
found at 51.7°E (51.732°E, 37.466°S, 1,595m). 
Obvious Eh, Ch4 and turbidity anomalies were 
observed, while many alive fauna were also found. 
Massive sulfide and basalts were recovered, 
suggesting that this might be a large-scale 
hydrothermal field. Another hydrothermal field was 
found at 53.3°E (53.255°E, 36.101°S, 2,218m). Water 
column anomalies were observed and large amount 
of sponge, coral and anemone were captured. A 
hydrothermal field combined with ultramafic rocks 
was found at 63.5°E (63.541°E, 27.951°S). CH4, Eh, 
H2S and temperature anomalies were detected. 
Massive sulfide, oxidized chimney and sediment 
were sampled. Serpentinized ultramafic rocks were 
recovered at a nearby site. This would be the first 
ultramafic-hosted hydrothermal system found at 
SWIR. An active hydrothermal filed was found at 
63.9°E (63.923°E, 27.851°S, 2,759m) west to Mt. 
Joundane. Large amount of alive faunas (anemone, 
crab, mussel and fish) was captured. Some 
hydrothermal oxides and anemones were collected. 
Three new hydrothermal vents were detected 400 m 
and 550 m north to the 49.65°E active field that was 
discovered in 2007. These new vents and water 
column anomalies are located 400 m and 550 m 
north to the 49.65°E field, respectively. Two obvious 
water column anomalies were detected at 51.41°E, 
37.43°S and 51.62°E, 37.44°S. These observations 
suggest that the average spacing between vent sites 
along the 48-54°E segment of SWIR is about 90 km, 
which is similar to that of global spreading ridgesand 
slightly smaller than that of fast spreading ridges. 
DE: [3017] MARINE GEOLOGY AND GEOPHYSICS / 
Hydrothermal systems 
DE: [3021] MARINE GEOLOGY AND GEOPHYSICS / 
Marine hydrogeology 
DE: [3035] MARINE GEOLOGY AND GEOPHYSICS / 
Midocean ridge processes 
DE: [3045] MARINE GEOLOGY AND GEOPHYSICS / 
Seafloor morphology, geology, and geophysics 
SC: Ocean Sciences (OS) 
MN: 2009 Fall Meeting 
 
View publication statsView publication stats