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Mata Ua

MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
Flashing Chimney
Maximum Temperature: 
Location on map: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
Minimum Depth (mbsl): 
Tectonic setting: 
Volcano Number (if applicable): 
Host Rock: 
Deposit Type: 
Notes on Vent Field Description: 
location approximate; one of the 7 volcanoes in the North Mata volcanic complex; classified here as arc volcano, but Baker et al. (2010): "The 25-km-long chain of Mata volcanoes lies ... separated from both the arc front and the spreading ridge"; 2012 cruise blog, accessed 24 April 2015, "September 20 (Q-328) discovered an extensive hydrothermal field on the steep slope. Prolific long-necked barnacles and other vent animals colonized the slope and older sulfide chimneys and several black smokers were discovered and sampled in a depth range of 2397-2356 m. At least two of the smokers appeared to be boiling. The maximum temperature recorded was 360 C... the hottest site in the NE Lau to date."; video of black smoker chimneys, dive Q328, accessed 24 April 2015,; WHOI YouTube video accessed 24 April 2015,
Notes Relevant to Biology: 
video of stalked barnacles, dive Q328, accessed 24 April 2015,
Year and How Discovered (if active, visual confirmation is listed first): 
2012 ROV Quest 4000; 2010 plume only (towed camera did not confirm)
Discovery References (text): 
Baker, E.T., et al. (2010) Multiple Active Volcanoes in the Northeast Lau Basin. AGU Fall Meeting Abstract #T13B-2188.
2012 cruise report, accessed 6 May 2015:
Other References (text): 
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.