Monowai Cone |
active, inferred |
arc volcano |
Tonga Arc |
-25.8870 |
-177.1880 |
150 |
1998 R/V Sonne SO-135; 2004 plume only |
SWIR, Plume 6 |
active, inferred |
mid-ocean ridge |
SWIR |
-27.7670 |
65.1330 |
3200 |
1997 plume only |
EPR, 28.3 S, Segment W3 |
active, inferred |
mid-ocean ridge |
S EPR |
-28.3000 |
-112.9830 |
2220 |
1998 plume only |
MTJ, T08C01 |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.9629 |
-174.7961 |
2400 |
2008 plume only |
Sisifo |
active, inferred |
arc volcano |
Aeolian Arc, Tyrrhenian Sea |
38.7833 |
13.8666 |
1200 |
2007 plume only |
Gorda Ridge, EP96A |
active, inferred |
mid-ocean ridge |
Gorda Ridge |
42.6790 |
-126.7820 |
3150 |
1996 camera/temperature tow followed by ROV did not confirm hydrothermal activity |
E Los Huellos Caldera |
active, inferred |
mid-ocean ridge |
Galapagos Rift |
0.9500 |
-90.5300 |
1600 |
2005 plume only; 2005 towed video Medea did not confirm activity |
EPR, 16 08'S |
active, inferred |
mid-ocean ridge |
S EPR |
-16.1300 |
-113.0000 |
2640 |
1993 plume only |
EPR, 14 18'S |
active, inferred |
mid-ocean ridge |
S EPR |
-14.3000 |
-112.6670 |
2630 |
1993 plume only |
SEIR-WXC07 |
active, inferred |
mid-ocean ridge |
SEIR |
-50.2500 |
138.3000 |
2420 |
2015 plume only |
Vityaz megamullion |
active, inferred |
mid-ocean ridge |
CIR |
-5.4000 |
68.5833 |
3500 |
1979 plume and deposits only |
Chile Rise, Segment N9A |
active, inferred |
mid-ocean ridge |
Chile Rise |
-39.0500 |
-91.5833 |
3450 |
1998 plume only |
Lucky Strike segment, southern end |
active, inferred |
mid-ocean ridge |
N MAR |
37.0500 |
-32.4200 |
2600 |
1994 plume only |
San Cristobal arc, Target N |
active, inferred |
arc volcano |
Solomons Arc |
-10.5000 |
164.0000 |
2000 |
2002 dredge only |
Mariana Trough, plume 2 |
active, inferred |
back-arc spreading center |
Mariana Trough |
12.7610 |
143.4730 |
2950 |
2003 plume only |
SWIR, D54 |
active, inferred |
mid-ocean ridge |
SWIR |
-52.4370 |
13.3120 |
4029 |
2000-2001 plume and dredge only |
Aden New Century Mountains |
active, inferred |
mid-ocean ridge |
Aden Ridge |
12.0833 |
45.6667 |
800 |
2000-2001 plume only |
Mariana Trough, 16.5 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
16.4010 |
144.8700 |
3829 |
2015 plume only |
EPR, 17 S |
active, inferred |
mid-ocean ridge |
S EPR |
-17.0000 |
-113.1170 |
2680 |
1993 plume only |
GEISEIR site 25, segment M4 |
active, inferred |
mid-ocean ridge |
SEIR |
-43.3115 |
92.1335 |
2700 |
2009 plume only |
Montserrat-Marie Galante fault |
active, inferred |
arc volcano |
Lesser Antilles Arc |
16.4600 |
-61.9820 |
1000 |
1987 plume and deposits |
Nishinoshima Island |
active, inferred |
arc volcano |
Izu-Bonin Arc |
27.2367 |
140.8783 |
5 |
1975 SCUBA |
S Oceanographer |
active, inferred |
mid-ocean ridge |
N MAR |
34.8670 |
-36.4330 |
3460 |
1992 plume only |
Tonga Arc, Volcano C |
active, inferred |
arc volcano |
Tonga Arc |
-20.1800 |
-175.2000 |
1050 |
2004 SS11/2004 cruise did not detect hydrothermal activity |
Gakkel Ridge, Site 7 |
active, inferred |
mid-ocean ridge |
Gakkel Ridge |
86.9833 |
55.5000 |
3800 |
2001 plume only |
GEISEIR site 3, segment J4 |
active, inferred |
mid-ocean ridge |
SEIR |
-41.7720 |
79.7530 |
2800 |
1996 plume only |
Rainbow Bay |
active, inferred |
mid-ocean ridge |
S MAR |
-14.0300 |
-14.3400 |
2900 |
2009 towed video did not confirm activity |
MAR, 27 S |
active, inferred |
mid-ocean ridge |
S MAR |
-27.1476 |
-13.4753 |
3341 |
2013 plume only |
EPR, 28.4 S, Segment W4 |
active, inferred |
mid-ocean ridge |
S EPR |
-28.4170 |
-112.9640 |
2350 |
1998 plume only |
EPR, 21 40'S |
active, inferred |
mid-ocean ridge |
S EPR |
-21.6340 |
-114.3010 |
2730 |
1987-1988 deposits only |