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Starfish Seamount, Tinakula

Name Alias(es): 
Jean-Charcot Troughs
Northern Backarc Troughs
New Hebrides backarc troughs
Vent Sites: 
Max Temperature Category: 
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: 
position for Site F of Tinakula deposit in Fig. 2 of Anderson et al. (2019): "The Tinakula seafloor massive sulfide (SMS) deposit is the first identified modern analog of a mafic volcaniclastic-dominated deposit of the type described by Morton and Franklin (1987). It is located in the Jean Charcot troughs in the northern New Hebrides back arc"; this position is on the eastern flank of Starfish seamount; KAIYO 1989 cruise CH4 anomaly 400 mab, high methane/Mn ratio; this is not Tinakula stratavolcano Global Volcanism Program volcano number 256010;
Year and How Discovered (if active, visual confirmation is listed first): 
2011 commercial ROV; 1989 plume only; 1989 towed camera survey did not confirm activity; 2002 plume and dredge only
Discovery References (text): 
Nakada et al. (1994) High-Na dacite from the Jean Charcot Trough (Vanuatu), Southwest Pacific. Mar. Geol. 116: 197-213;
Maillet et al., 1995. Tectonics, magmatism, and evolution of the New Hebrides backarc troughs (Southwest Pacific). pp.177-235, in Backarc Basins: Tectonics and Magmatism, ed. Taylor, B., Plenum Press, New York;
SOLAVENTS FR03/2002 cruise summary (;
Other References (text): 
McConachy (2002) Submarine Hydrothermal Processes in Volcanic Arcs, Back Arcs and Continental Shelf Settings in the SW Pacific (;
[McConachy et al., CSIRO Exploration and Mining Rpt Cruise report 1026F, 402 pp., 2002];
Melissa O. Anderson, Mark D. Hannington, Timothy F. McConachy, John W. Jamieson, Maria Anders, Henning Wienkenjohann, Harald Strauss, Thor Hansteen, Sven Petersen; Mineralization and Alteration of a Modern Seafloor Massive Sulfide Deposit Hosted in Mafic Volcaniclastic Rocks. Economic Geology ; 114 (5): 857–896. doi:;