You are here

Duanqiao

Name Alias(es): 
SWIR, unnamed, Segment 27
SWIR 50 28'E
Activity: 
Max Temperature Category: 
Latitude: 
-37.6579
Longitude: 
50.4671
Location on map: 
Ocean: 
Region: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
1780
Minimum Depth (mbsl): 
1720
Tectonic setting: 
Full Spreading Rate (mm/a): 
11.9
Volcano Number (if applicable): 
Host Rock: 
basalt-hosted
Deposit Type: 
NotProvided
Notes on Vent Field Description: 
two areas of sulfide deposits approx. 200 x 100 m and 300 x 200 m based on video surveys; Yang et al. (2017): "Hydrothermal activity of Duanqiao probably started about 84.3 (+-0.5) kyrs ago and ceased about 0.737 (+-0.023) kyrs ago.", "Four major episodes of hydrothermal activity... 68.9-84.3, 43.9-48.4, 25.3-34.8, and 0.7-17.3 kyrs."
Year and How Discovered (if active, visual confirmation is listed first): 
2008 video and TV-grab DY115-20 Leg 5; 2015 TV-grab DY125-34
Discovery References (text): 
Tao, C. et al. (2009) New hydrothermal fields found along the SWIR during the Legs 5-7 of the Chinese DY115-20 Expedition. AGU Fall Meeting abstract #OS21A-1150;
Other References (text): 
Yang, W., et al. (2017) 230Th/238U dating of hydrothermal sulfides from Duanqiao hydrothermal field, Southwest Indian Ridge. Marine Geophysical Research 38, 71-83, https://doi.org/10.1007/s11001-016-9279-y