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94SO2

Fri, 2010-04-30 10:52 — dadmin
Feature ID in MGDS: 
94SO2
Activity: 
Location
Latitude: 
-19.4000
Longitude: 
169.9000
Ocean: 
Region: 
National Jurisdiction: 
Depth (m)
Depth of hydrothermal activity and/or deposits (m below sea level).
Maximum or Single Reported Depth: 
980
Minimum Depth: 
940
Tectonic Setting Category: 
Full Spreading Rate (mm/a): 
50.0
Host Rock: 
NotProvided
Deposit Type: 
NotProvided
Notes on Vent Field Description: 
knoll located in Futuna Trough, Coriolis (Southern Backarc) Troughs; crater with hydrothermal deposits; nearby but not within tenement application Nautilus Minerals (SRK report 2011); spreading rate not in Bird (2003), therefore used estimate for South New Hebrides Back-Arc Troughs from Pelletier et al. (1998)
Notes Relevant to Biology: 
Iizasa et al. (1998): "There were no hydrothermal biological community and chimneys here."
Year and How Discovered (if active, visual confirmation is listed first): 
1994 towed camera with temperature did not confirm activity
References
[References in brackets not consulted in full by InterRidge Coordinator 2009]
Discovery References (text): 
[JICA (Japan International Cooperation Agency), MMAJ (Metal Mining Agency of Japan), and SOPAC (South Pacific Applied Geoscience Commission), 1995, South Pacific seafloor atlas: Japan-SOPAC cooperative study on deep sea mineral resources in the southwest Pacific 1985–1994: JICA Report no. 95-063, 24 p.]
Iizasa et al., 1998, Hydrothermal sulfide-bearing Fe-Si oxyhydroxide deposits from the Coriolis Troughs, Vanuatu backarc, southwestern Pacific: Marine Geology, 145: 1-21.
Other References (text): 
McConacchy et al., Geology, 33, 61-64, 2005, New hydrothermal activity and alkalic volcanism in the backarc Coriolis Troughs, Vanuatu.
SRK Consulting (2011) Nautilus Minerals Incorporated NI43-101 Technical Report 2010 PNG, Tonga, Fiji, Solomon Islands, New Zealand, Vanuatu and the ISA. Document Reference: NAT007 Nautilus 43-101 Technical Report 2011 Rev3.docx.
Pelletier, B. et al. (1998) Current tectonics of the Tonga–New Hebrides region. Earth and Planetary Science Letters 164: 263-276.