EPR, 28.4 S, Segment W4 |
active, inferred |
mid-ocean ridge |
S EPR |
-28.4170 |
-112.9640 |
2350 |
1998 plume only |
Pacific-Antarctic Ridge, 64 S segment |
active, inferred |
mid-ocean ridge |
Pacific-Antarctic Ridge |
-64.5000 |
-170.0000 |
2300 |
2009 plume only |
Magic Mountain |
active, confirmed |
mid-ocean ridge |
Explorer Ridge |
49.7500 |
-130.2667 |
1850 |
1984 submersible Pisces IV |
Bai Causeway |
active, inferred |
mid-ocean ridge |
SWIR |
-37.9000 |
48.8000 |
3000 |
2014 leg 2 or 3 of the 30th Chinese Cruise |
GEISEIR site 33, segment O2 |
active, inferred |
mid-ocean ridge |
SEIR |
-47.2383 |
97.1566 |
2700 |
2009 plume only |
Ribeira Quente |
active, confirmed |
mid-ocean ridge |
Terceira Rift |
37.7250 |
-25.3160 |
10 |
1986 or earlier, likely from shore or by SCUBA |
East Blanco Depression |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
44.2170 |
-129.6250 |
3460 |
1994 ROV U.S. Navy's Advanced Tethered Vehicle |
EPR, 5 S |
active, inferred |
mid-ocean ridge |
S EPR |
-5.0000 |
-106.4000 |
2650 |
1980's camera tows; 1993 and 1998 plume only; 1998 submersible Alvin did not confirm activity |
GEISEIR site 3, segment J4 |
active, inferred |
mid-ocean ridge |
SEIR |
-41.7720 |
79.7530 |
2800 |
1996 plume only |
EPR, 1 S |
active, inferred |
mid-ocean ridge |
S EPR |
-0.8000 |
-102.4600 |
2800 |
2005 plume only |
Red Seamount |
active, confirmed |
mid-ocean ridge |
N EPR |
20.8033 |
-109.3783 |
2000 |
1982 submersible Alvin |
MAR, 17 S |
active, inferred |
mid-ocean ridge |
S MAR |
-17.2522 |
-14.2270 |
3280 |
2013 plume only |
Pito Seamount |
active, confirmed |
mid-ocean ridge |
S EPR |
-23.3275 |
-111.6402 |
2270 |
1993 submersible Nautile |
Gorda Ridge, 41 30'N |
inactive |
mid-ocean ridge |
Gorda Ridge |
41.5167 |
-127.4500 |
3350 |
1984 deposits only |
EPR, 9 30'N |
active, confirmed |
mid-ocean ridge |
N EPR |
9.5167 |
-104.2414 |
2580 |
1989 Argo I towed video |
SWIR, Plume 2, Segment 16 |
active, inferred |
mid-ocean ridge |
SWIR |
-31.0670 |
58.9670 |
4200 |
1997 plume only |
CIR, 8-17 S, Segment 5, 12.25 S |
active, inferred |
mid-ocean ridge |
CIR |
-12.2500 |
65.7000 |
4000 |
2010 plume only |
Logatchev-5 |
inactive |
mid-ocean ridge |
N MAR |
14.7500 |
-44.9700 |
3100 |
2007 ROV VICTOR 6000 did not find hydrothermal activity |
Eye of Mordor Seamount |
active, inferred |
mid-ocean ridge |
Galapagos Rift |
1.9410 |
-91.3100 |
1555 |
2005 plume only |
Source |
active, confirmed |
mid-ocean ridge |
JdF Ridge |
46.1550 |
-129.8100 |
2055 |
1993 submersible Alvin |
CIR, 8-17 S, Segment 6, 14.75 S |
active, inferred |
mid-ocean ridge |
CIR |
-14.7500 |
66.5000 |
3400 |
2010 plume only |
EPR, 11 45'N, OSC |
active, inferred |
mid-ocean ridge |
N EPR |
11.7775 |
-103.8300 |
2580 |
1984 Angus camera (or 1985 Argo video) tow with temperature; 1988 submersible Alvin dive #2004 (need reference to confirm activity) |
S AMAR 2 |
active, inferred |
mid-ocean ridge |
N MAR |
35.9670 |
-34.1830 |
2240 |
1992 plume only; 1994 plume only |
EPR, 17 42'S |
active, inferred |
mid-ocean ridge |
S EPR |
-17.7000 |
-113.2500 |
2600 |
1993 plume only |
MAR, 43 N |
active, inferred |
mid-ocean ridge |
N MAR |
43.0000 |
-29.0000 |
3400 |
1986 or earlier plume only |
Alarcon Rise/Pescadero intersection |
active, inferred |
mid-ocean ridge |
Gulf of California |
23.6423 |
-108.3948 |
2384 |
2015 ROV Doc Ricketts did not confirm activity |
EPR, 21 N |
active, confirmed |
mid-ocean ridge |
N EPR |
20.8333 |
-109.0833 |
2600 |
1979 submersible Alvin; 1978 submersible Cyana discovered mineral deposits only |
EPR, southern 16 N segment |
active, inferred |
mid-ocean ridge |
N EPR |
15.5000 |
-105.4000 |
2300 |
1997 plume only |
Precious Stone Mountain |
active, confirmed |
mid-ocean ridge |
Galapagos Rift |
1.2200 |
-101.4900 |
1700 |
2009 deep-tow video and TV grab |
Knipovich Ridge, 77 40'N |
active, inferred |
mid-ocean ridge |
Knipovich Ridge |
77.6300 |
7.5800 |
3000 |
2000 plume only |