Green Seamount |
inactive |
mid-ocean ridge |
N EPR |
20.8033 |
-109.2833 |
2000 |
1982 submersible Alvin observed only inactive |
MAR, 17 S |
active, inferred |
mid-ocean ridge |
S MAR |
-17.2522 |
-14.2270 |
3280 |
2013 plume only |
Red Seamount |
active, confirmed |
mid-ocean ridge |
N EPR |
20.8033 |
-109.3783 |
2000 |
1982 submersible Alvin |
SWIR, D20 |
active, inferred |
mid-ocean ridge |
SWIR |
-53.0200 |
22.1880 |
4170 |
2000-2001 plume and dredge only |
Markov Deep |
active, inferred |
mid-ocean ridge |
N MAR |
5.9100 |
-33.1800 |
3500 |
2001-2002 and 2003 dredge only |
EPR, 27.7 S, Segment W3 |
active, inferred |
mid-ocean ridge |
S EPR |
-27.7000 |
-112.9170 |
2105 |
1998 plume only |
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, 10 02'N |
active, confirmed |
mid-ocean ridge |
N EPR |
10.0330 |
-104.3300 |
2560 |
1992 submersible Alvin |
Su Causeway |
active, inferred |
mid-ocean ridge |
SWIR |
-38.1000 |
48.6000 |
3000 |
2014 leg 2 or 3 of the 30th Chinese Cruise |
TaiJi |
active, inferred |
mid-ocean ridge |
S MAR |
-13.5900 |
-14.5200 |
3180 |
2011 plume only |
MAR, 11 N |
active, inferred |
mid-ocean ridge |
N MAR |
11.0380 |
-43.6483 |
4010 |
1984 plume only; 2009 plume only |
Flow |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
46.5250 |
-129.5783 |
2390 |
1993 ROV ROPOS |
Sasquatch Field |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
47.9969 |
-129.0662 |
2200 |
2000 submersible Alvin |
GEISEIR site 34, segment O3 |
active, inferred |
mid-ocean ridge |
SEIR |
-47.4145 |
97.4373 |
2700 |
2009 plume only |
Middle Valley, Bent Hill Massive Sulfide |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
48.4341 |
-128.6812 |
2440 |
1990 HOV Alvin, 1985 deposits only |
S AMAR 2 |
active, inferred |
mid-ocean ridge |
N MAR |
35.9670 |
-34.1830 |
2240 |
1992 plume only; 1994 plume only |
EPR, 2 S |
active, confirmed |
mid-ocean ridge |
S EPR |
-2.2200 |
-102.6550 |
2900 |
2008 towed video and AUV ABE |
Axial Seamount, International District |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
45.9266 |
-129.9795 |
1544 |
1986 submersible Pisces IV |
EPR, 9 30'N |
active, confirmed |
mid-ocean ridge |
N EPR |
9.5167 |
-104.2414 |
2580 |
1989 Argo I towed video |
Galapagos Rift, 94.7 W |
active, inferred |
mid-ocean ridge |
Galapagos Rift |
2.6000 |
-94.7750 |
2690 |
2005 plume only |
Carlsberg Ridge, 63 40'E |
active, inferred |
mid-ocean ridge |
Carlsberg Ridge |
3.7000 |
63.6666 |
3500 |
2007 plume only |
SEIR-WXC25 |
active, inferred |
mid-ocean ridge |
SEIR |
-50.2500 |
131.9000 |
3050 |
2015 plume only |
EPR, 10 08'N |
active, inferred |
mid-ocean ridge |
N EPR |
10.1300 |
-104.3300 |
2580 |
1983 towed camera and temperature measurements (no direct observations/sampling of hydrothermal fluid) |
Ringvent |
active, confirmed |
mid-ocean ridge |
Gulf of California |
27.5083 |
-111.6792 |
1740 |
2016 submersible Alvin; 2009 towed camera/CTD/bottles |
Gakkel Ridge, Site 5 |
active, inferred |
mid-ocean ridge |
Gakkel Ridge |
86.3500 |
37.0000 |
3600 |
2001 plume only |
GEISEIR site 1, segment J2 |
active, inferred |
mid-ocean ridge |
SEIR |
-39.4400 |
78.0920 |
2270 |
1996 plume only |
CIR, 8-17 S, Segment 5, 12.6 S |
active, inferred |
mid-ocean ridge |
CIR |
-12.6000 |
66.1000 |
3800 |
2010 plume only |
Mothra Field |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
47.9233 |
-129.1082 |
2270 |
1996 ROV ROPOS; 1986 plume only |
Walsh |
active, inferred |
mid-ocean ridge |
Mid-Cayman Rise |
17.8333 |
-81.8333 |
4000 |
2009 plume only; 2013 plume only |
Tiancheng |
active, confirmed |
mid-ocean ridge |
SWIR |
-27.9670 |
63.5500 |
3600 |
2014 HOV Jiaolong; 1997 plume only; 2009 DY115-20 Leg 7 plume and deposits; |