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mid-ocean ridge

Below is the subset of Vent Fields that contain the taxonomy term (Activity, Tectonic Setting, Region, Ocean, National Jurisdiction, Temperature Category, or MGDS Feature ID) listed above.
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Vent Field Name ID Activity Tectonic Settingsort descending Region Latitude Longitude Maximum or Single Reported Depth Year and How Discovered
MAR, 30.8 S active, inferred mid-ocean ridge S MAR -30.8327 -13.4690 2950 2013 plume only
W Eye of Mordor inactive mid-ocean ridge Galapagos Rift 1.9707 -91.3900 1600 2005 towed video Medea observed inactive chimneys
S AMAR 2 active, inferred mid-ocean ridge N MAR 35.9670 -34.1830 2240 1992 plume only; 1994 plume only
CIR, 8-17 S, Segment 6, 14.75 S active, inferred mid-ocean ridge CIR -14.7500 66.5000 3400 2010 plume only
EPR, 15 S active, inferred mid-ocean ridge S EPR -15.0000 -112.7700 2640 1985/86 or 1989 TV grab (need to check references to confirm activity); 1993 plume only
EPR, Manzanillo Spreading Segment active, inferred mid-ocean ridge N EPR 18.2500 -106.3000 2600 1997 plume only
Logatchev-5 inactive mid-ocean ridge N MAR 14.7500 -44.9700 3100 2007 ROV VICTOR 6000 did not find hydrothermal activity
Split Seamount active, inferred mid-ocean ridge JdF Ridge 47.6400 -128.9667 2350 1990 camera tow (need reference to check if activity confirmed)
Don Joao de Castro Bank active, confirmed mid-ocean ridge Terceira Rift 38.2300 -26.6300 45 1995 SCUBA
EPR, 26 10'S active, confirmed mid-ocean ridge S EPR -26.2050 -112.6133 2600 1987 or earlier [need to check Marchig & Gundlach (1987)]; 2005 submersible Alvin did not observe active vents
SWIR, 63.9 E active, inferred mid-ocean ridge SWIR -27.8510 63.9230 2759 2009 DY115-20 Leg 7 (need reference to confirm activity)
GEISEIR site 28, segment M6 active, inferred mid-ocean ridge SEIR -44.7237 94.6039 2700 2009 plume only
EPR, 2 S, off-axis active, inferred mid-ocean ridge S EPR -2.0840 -102.8270 3000 2008 plume only
MAR, 24 20'N inactive mid-ocean ridge N MAR 24.3500 -46.2000 3200 NotProvided
EPR, 17 47'S active, inferred mid-ocean ridge S EPR -17.7900 -113.3000 2600 1993 plume only
Carlsberg Ridge, 63 50'E active, inferred mid-ocean ridge Carlsberg Ridge 3.6916 63.8333 3500 2009 plume only; 2012 plume and deposits
MAR, 8 10'S active, inferred mid-ocean ridge S MAR -8.1670 -13.4670 2000 2001 plume only
Pegasus active, confirmed mid-ocean ridge Galapagos Rift 0.7500 -88.2000 2000 2011 ROV Little Hercules
MAR, 11 26'N active, inferred mid-ocean ridge N MAR 11.4482 -43.7035 3835 2009 plume only
EPR, 31.4 S, Segment E4 active, inferred mid-ocean ridge S EPR -31.4330 -111.9670 2350 1998 plume only
GEISEIR site 1, segment J2 active, inferred mid-ocean ridge SEIR -39.4400 78.0920 2270 1996 plume only
SWIR, D82 active, inferred mid-ocean ridge SWIR -52.2080 15.5830 4100 2000-2001 plume only
CIR, 8-17 S, Segment 1 active, inferred mid-ocean ridge CIR -8.2500 68.2000 3600 2010 plume only
EPR, 11 07'N active, inferred mid-ocean ridge N EPR 11.1330 -103.7800 2580 1988 submersible Alvin dive #1989 (need reference to confirm activity); 1991 plume only
GEISEIR site 17, segment L3 active, inferred mid-ocean ridge SEIR -41.6498 87.3481 2500 2010 plume only
SEIR-WXC27 active, inferred mid-ocean ridge SEIR -50.4000 134.3000 2760 2015 plume only
GEISEIR site 4, segment K1 active, inferred mid-ocean ridge SEIR -41.2025 81.0625 2800 2010 plume only
Carlsberg Ridge, CR2003 active, inferred mid-ocean ridge Carlsberg Ridge 6.0500 60.9500 3500 2003 plume only; 2007 plume only
Deyin-1 active, confirmed mid-ocean ridge S MAR -15.1666 -13.3558 2850 2012 TV-grab; 2011 deposits only; 2013 plume only
Galapagos Rift, 95.5 W active, inferred mid-ocean ridge Galapagos Rift 2.6700 -95.4500 3200 1990 submersible Alvin did not confirm activity
Gakkel Ridge, Site 8 active, inferred mid-ocean ridge Gakkel Ridge 86.5333 69.0000 3500 2001 plume only
near Jade Emperor Mountain, on-axis active, inferred mid-ocean ridge SWIR -37.8666 49.2166 3000 2010 plume only
EPR, 10 34'S active, inferred mid-ocean ridge S EPR -10.5667 -110.2800 2900 1985/86 or 1989 TV grab (need to check references to confirm activity)
Gorda Ridge, EP96B active, inferred mid-ocean ridge Gorda Ridge 42.5500 -126.8333 3400 1984 deposits only; 1996 plume only
Sasquatch Field active, confirmed mid-ocean ridge JdF Ridge 47.9969 -129.0662 2200 2000 submersible Alvin
EPR, 8 53'N active, inferred mid-ocean ridge N EPR 8.9000 -104.2000 2580 1991 plume only
Squid Forest inactive mid-ocean ridge Kolbeinsey Ridge 68.0000 -17.5000 900 1999 ROV Aglantha
EPR, 21 20'S active, inferred mid-ocean ridge S EPR -21.3670 -114.2570 2900 1981 plume only; 1987-1988 deposits only
MAR, 31 S active, inferred mid-ocean ridge S MAR -31.7377 -13.3772 3050 2013 plume only
Galapagos Mounds active, confirmed mid-ocean ridge Galapagos Rift 1.4500 -86.1665 2700 1977 submersible Alvin
S Oceanographer active, inferred mid-ocean ridge N MAR 34.8670 -36.4330 3460 1992 plume only
Von Damm active, confirmed mid-ocean ridge Mid-Cayman Rise 18.3777 -81.7972 2372 2010 AUV Autosub6000 and HyBIS TVG; 2009 plume only
EPR, 16 24'S active, inferred mid-ocean ridge S EPR -16.4000 -113.0500 2640 1993 plume only
EPR, mid 17 N segment active, inferred mid-ocean ridge N EPR 17.0000 -105.3800 2750 1997 plume only
Logatchev-3 active, inferred mid-ocean ridge N MAR 14.7083 -44.9667 3100 1993-1999 (between these dates)
Not Dead Yet active, confirmed mid-ocean ridge JdF Ridge 46.6899 -129.3772 2419 2007 ROV Jason II; 1991 camera tow did not confirm activity
Moytirra active, confirmed mid-ocean ridge N MAR 45.4833 -27.8500 2900 2011 ROV Holland 1; 2008 plume only MAPRs, ROV Isis buoyant plume, but no visual confirmation
EPR, 26.5 S active, confirmed mid-ocean ridge S EPR -26.4833 -112.6250 2064 1993 submersible Nautile (or earlier)
SWIR, Plume 3, Segment 16 active, inferred mid-ocean ridge SWIR -30.8500 59.3830 3900 1997 plume only
GEISEIR site 29, segment M6 active, inferred mid-ocean ridge SEIR -44.9054 94.9673 2700 2009 plume only
MAR, 24 30'N inactive mid-ocean ridge N MAR 24.5000 -46.1533 3900 1987 deposits only
EPR, 17 53'S active, inferred mid-ocean ridge S EPR -17.8800 -113.3000 2610 1993 plume only
Precious Stone Mountain active, confirmed mid-ocean ridge Galapagos Rift 1.2200 -101.4900 1700 2009 deep-tow video and TV grab
Nibelungen active, confirmed mid-ocean ridge S MAR -8.3000 -13.5200 2900 2006 AUV ABE followed by ROV Quest; 2004 plume only
Uka Pacha active, confirmed mid-ocean ridge Galapagos Rift 0.7700 -88.3000 2100 2011 ROV Little Hercules
MAR, 11 N active, inferred mid-ocean ridge N MAR 11.0380 -43.6483 4010 1984 plume only; 2009 plume only
Nolan's Nook active, confirmed mid-ocean ridge S EPR -31.1500 -111.9167 2330 1999 submersible Alvin; 1998 plume only
GEISEIR site 3, segment J4 active, inferred mid-ocean ridge SEIR -41.7720 79.7530 2800 1996 plume only
Duanqiao active, inferred mid-ocean ridge SWIR -37.6579 50.4671 1780 2008 video and TV-grab DY115-20 Leg 5; 2015 TV-grab DY125-34
EPR, 11 17'N active, confirmed mid-ocean ridge N EPR 11.2833 -103.7583 2560 1984 Angus camera (or 1985 Argo video) tow with temperature
GEISEIR site 18, segment L3 active, inferred mid-ocean ridge SEIR -41.7133 87.4375 2500 2010 plume only
SEIR-WXC15 active, inferred mid-ocean ridge SEIR -50.2500 135.3000 3000 2015 plume only
GEISEIR site 6, segment K2 active, inferred mid-ocean ridge SEIR -41.6600 81.6617 2600 2007 plume only; 2010 plume only
Owen transform fault inactive mid-ocean ridge Carlsberg Ridge 9.8333 57.9500 4500 NotProvided
MAR, segment south of St. Paul system active, inferred mid-ocean ridge N MAR 0.5000 -25.0000 3500 2013 plume only
Hess Deep inactive mid-ocean ridge Galapagos Rift 2.2500 -101.5000 5100 NotProvided
Gakkel Ridge, 7.5 E active, inferred mid-ocean ridge Gakkel Ridge 85.0167 7.4500 3600 2001 plume only
Zouyu ridge active, confirmed mid-ocean ridge S MAR -13.2800 -14.4100 2315 2009 towed video
EPR, 11 18'S active, confirmed mid-ocean ridge S EPR -11.3000 -110.5300 2650 1985/86 or 1989 TV grab (need to check references to confirm activity); 1998 submersible Alvin
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
Salty Dawg Field active, confirmed mid-ocean ridge JdF Ridge 47.9822 -129.0756 2200 1995 submersible Alvin, followed by ROV ROPOS
EPR, 9 17'N active, confirmed mid-ocean ridge N EPR 9.2800 -104.2166 2585 1989 Argo I towed video
Soria Moria active, confirmed mid-ocean ridge Mohns Ridge 71.2593 -5.8146 750 2005 ROV BIODEEP-05 cruise
EPR, 21 25'S active, confirmed mid-ocean ridge S EPR -21.4333 -114.2917 2850 1984 submersible Cyana; 1983 deposits only
SWIR, Plume 5 active, inferred mid-ocean ridge SWIR -27.9170 64.4500 4000 1997 plume only
GEISEIR site 30, segment O1 active, inferred mid-ocean ridge SEIR -46.6240 96.0594 2500 2009 plume only
Aegir active, confirmed mid-ocean ridge Mohns Ridge 72.3440 1.5550 2600 2015 ROV Ægir 6000; 2013 plume only; 2015 AUV
Galapagos Rift, 85 50'W inactive mid-ocean ridge Galapagos Rift 0.7500 -85.8333 2600 1988 or earlier submersible observations
S-OH1 active, inferred mid-ocean ridge N MAR 34.5330 -36.8500 3000 1996 submersible Nautile did not find active vents; 2000 or earlier plume only
EPR, 16 35'S active, inferred mid-ocean ridge S EPR -16.5830 -113.0600 2650 1993 plume only; 1998 submersible Alvin did not confirm activity
EPR, northern 17 N segment active, inferred mid-ocean ridge N EPR 17.6700 -105.0050 2800 1997 plume only
CIR, 8-17 S, Segment 2 active, inferred mid-ocean ridge CIR -9.9000 66.7500 4000 2010 plume only
Logatchev-2 active, confirmed mid-ocean ridge N MAR 14.7200 -44.9380 2760 2007 ROV VICTOR 6000; 1993-1994 TV grab and towed photo system did not confirm activity; 1996-1998 video imaging and sampling did not confirm activity
Flow active, confirmed mid-ocean ridge JdF Ridge 46.5250 -129.5783 2390 1993 ROV ROPOS
Evan active, confirmed mid-ocean ridge N MAR 37.2667 -32.2833 1775 2006 submersible Nautile
EPR, 27.7 S, Segment W3 active, inferred mid-ocean ridge S EPR -27.7000 -112.9170 2105 1998 plume only
EPR, 11 24'N active, confirmed mid-ocean ridge N EPR 11.4000 -103.7800 2580 1990 submersible Alvin; 1988 submersible Alvin dive #1994 (need reference to confirm activity)
Snake Pit active, confirmed mid-ocean ridge N MAR 23.3683 -44.9500 3500 1985 real-time TV and imaging sonar; earlier in 1985 seafloor photographs did not confirm activity
EPR, 17 56'S active, inferred mid-ocean ridge S EPR -17.9400 -113.3170 2620 1993 plume only
Seven Sisters active, inferred mid-ocean ridge Kolbeinsey Ridge 71.1500 -12.7900 2200 2012 plume only; 2013 ROV Aglantha (may have confirmed); 2013 plume only
Kebrit Deep active, inferred mid-ocean ridge Red Sea 24.7233 36.2767 1590 1972 deposits only
Mohns Ridge, 72 N active, inferred mid-ocean ridge Mohns Ridge 72.0390 -0.2520 2500 1987 plume only; 2013 plume only
MAR, 12 48'N inactive mid-ocean ridge N MAR 12.8000 -44.7883 2400 NotProvided
EPR, 37 40'S Axial Dome active, confirmed mid-ocean ridge Pacific-Antarctic Ridge -37.6667 -110.8667 2240 1997 video survey L'Atalante (do not know if activity confirmed); 1995 TV survey did not confirm activity; 2001 towed video and TV-grab definitely confirmed
GEISEIR site 5, segment K1 active, inferred mid-ocean ridge SEIR -41.2420 81.1580 2860 1996 plume only; 2007 plume only
Longqi active, confirmed mid-ocean ridge SWIR -37.7838 49.6494 2785 2007 towed video sled followed by AUV ABE; 2005 plume only
GEISEIR site 19, segment L3 active, inferred mid-ocean ridge SEIR -41.8333 87.6266 2400 2009 GEISEIR 1 and 2010 GEISEIR 2 plume only
SEIR-WXC12 active, inferred mid-ocean ridge SEIR -50.2500 136.2500 2780 2015 plume only
GEISEIR site 8, segment K3 active, inferred mid-ocean ridge SEIR -41.8833 81.9816 2800 2010 plume only
Carlsberg Ridge, 1.67 S inactive mid-ocean ridge Carlsberg Ridge -1.6768 67.7700 4500 NotProvided
Su Causeway active, inferred mid-ocean ridge SWIR -38.1000 48.6000 3000 2014 leg 2 or 3 of the 30th Chinese Cruise
Galapagos Rift, 94.4 W active, inferred mid-ocean ridge Galapagos Rift 2.5300 -94.3300 2400 2005 plume only
Menez Hom active, confirmed mid-ocean ridge N MAR 37.1500 -32.4333 1802 2002 ROV Victor 6000
Gakkel Ridge, Site 2 active, inferred mid-ocean ridge Gakkel Ridge 83.8500 -2.0000 3900 2001 plume only
TaiJi active, inferred mid-ocean ridge S MAR -13.5900 -14.5200 3180 2011 plume only
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
NESCA active, confirmed mid-ocean ridge Gorda Ridge 41.0000 -127.4917 3300 1988 submersible Alvin; 1986 dredge and photographs did not confirm activity
Middle Valley, Dead Dog Vent Field active, confirmed mid-ocean ridge JdF Ridge 48.4560 -128.7088 2450 1990 HOV Alvin
EPR, 9 30'N active, confirmed mid-ocean ridge N EPR 9.5167 -104.2414 2580 1989 Argo I towed video
Troll Wall active, confirmed mid-ocean ridge Mohns Ridge 71.2833 -5.7667 550 2005 ROV BIODEEP-05 cruise
EPR, Ridge 1, 20 40'S active, confirmed mid-ocean ridge S EPR -20.8333 -114.1667 3000 1983 Deep Tow camera
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;
GEISEIR site 31, segment O1 active, inferred mid-ocean ridge SEIR -46.8956 96.5709 2600 2009 plume only
Mohns Ridge, 72.8 N active, inferred mid-ocean ridge Mohns Ridge 72.8060 4.1650 2300 2013 plume only
Calyfield active, confirmed mid-ocean ridge Galapagos Rift 0.8300 -89.6083 1660 2002 submersible Alvin
S-OH2 active, inferred mid-ocean ridge N MAR 34.0670 -37.4830 3250 2000 or earlier plume only
EPR, 16 43'S active, inferred mid-ocean ridge S EPR -16.7170 -113.0680 2600 1985/86 or 1989 TV grab (need to check references to confirm activity)
EPR, southern 17 N segment active, inferred mid-ocean ridge N EPR 16.5800 -105.3000 2700 1997 plume only
CIR, 8-17 S, Segment 3 active, inferred mid-ocean ridge CIR -10.6600 66.5000 3500 2010 plume only
Ashadze-2 active, confirmed mid-ocean ridge N MAR 12.9917 -44.9067 3300 2007 ROV Victor 6000; 2005 TV profiling, plume, and dredge did not confirm activity
Brown Bear Seamount inactive mid-ocean ridge JdF Ridge 46.0333 -130.5500 1500 NotProvided
Lucky Strike active, confirmed mid-ocean ridge N MAR 37.2933 -32.2733 1740 1993 submersible Alvin; 1992 dredge and plume only
EPR, 27.9 S, Segment W3 active, inferred mid-ocean ridge S EPR -27.8670 -112.9120 2180 1998 plume only
Feather Duster active, confirmed mid-ocean ridge N EPR 10.9267 -103.6767 2520 1984 towed camera and submersible Alvin
Knipovich Ridge, 75 N active, inferred mid-ocean ridge Knipovich Ridge 74.8000 8.4417 3185 2000 plume only
EPR, 18 15'S active, confirmed mid-ocean ridge S EPR -18.2500 -113.3500 2680 1993 submersible Nautile
Krasnov inactive mid-ocean ridge N MAR 16.6400 -46.4750 3900 2002 or earlier plume only; 2004 TV grab indicated inactive; 2007 ROV Victor indicated inactive
CIR, 8-17 S, Segment 4, 11.3 S active, inferred mid-ocean ridge CIR -11.3000 66.4000 3500 2010 plume only
Shaban Deep active, inferred mid-ocean ridge Red Sea 26.2250 35.3500 1540 1983 deposits only
Merian active, inferred mid-ocean ridge S MAR -26.0166 -13.8500 2550 2012 R/V Dayang Yihao; 2013 AUV Abyss plume and side-scan data
Markov Deep active, inferred mid-ocean ridge N MAR 5.9100 -33.1800 3500 2001-2002 and 2003 dredge only
EPR, 37 48'S Axial Dome active, confirmed mid-ocean ridge Pacific-Antarctic Ridge -37.8000 -110.9167 2200 2001 towed video and TV-grab
GEISEIR site 2, segment J4 active, inferred mid-ocean ridge SEIR -41.2520 79.1030 2800 1996 plume and dredge only
SWIR, D20 active, inferred mid-ocean ridge SWIR -53.0200 22.1880 4170 2000-2001 plume and dredge 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
Medusa active, confirmed mid-ocean ridge N EPR 9.1404 -104.2065 2580 2007 ROV Jason II; 1991 plume only
Eyjafjördur active, confirmed mid-ocean ridge Kolbeinsey Ridge 65.8500 -18.1333 65 1997, likely by SCUBA
EPR, 21 40'S active, inferred mid-ocean ridge S EPR -21.6340 -114.3010 2730 1987-1988 deposits only
GEISEIR site 20, segment L3 active, inferred mid-ocean ridge SEIR -41.9508 87.8008 2400 2010 plume only
SEIR-WXC02 active, inferred mid-ocean ridge SEIR -50.2500 137.0000 2620 2015 plume only
GEISEIR site 9, segment K3 active, inferred mid-ocean ridge SEIR -41.9633 82.0600 2700 2010 plume only
CIR, 19 29'S active, inferred mid-ocean ridge CIR -19.4830 65.7330 2700 1988 plume only; 2000 submersible Nautile did not confirm activity
Bai Causeway active, inferred mid-ocean ridge SWIR -37.9000 48.8000 3000 2014 leg 2 or 3 of the 30th Chinese Cruise
Galapagos Rift, 94.7 W active, inferred mid-ocean ridge Galapagos Rift 2.6000 -94.7750 2690 2005 plume only
AMAR active, inferred mid-ocean ridge N MAR 36.3833 -33.6500 2600 1992 plume only; 1994 plume only
Gakkel Ridge, Site 3 active, inferred mid-ocean ridge Gakkel Ridge 84.4333 2.1333 4300 2001 plume only
Rainbow Bay active, inferred mid-ocean ridge S MAR -14.0300 -14.3400 2900 2009 towed video did not confirm activity
EPR, 7 S active, inferred mid-ocean ridge S EPR -7.0000 -107.5500 2600 1985/86 or 1989 TV grab
Guaymas Basin, Southern Trough active, confirmed mid-ocean ridge Gulf of California 27.0148 -111.4109 2000 1982 submersible Alvin; 1980 DeepTow CTD and dredging
EPR, 28.4 S, Segment W4 active, inferred mid-ocean ridge S EPR -28.4170 -112.9640 2350 1998 plume only
SWIR, 51.7 E active, inferred mid-ocean ridge SWIR -37.4660 51.7320 1595 2008 plume and dredge only
GEISEIR site 32, segment O2 active, inferred mid-ocean ridge SEIR -47.1196 96.8947 2600 2009 plume only
EPR, Seamount 5 active, inferred mid-ocean ridge N EPR 13.0000 -103.5000 1100 1988 or earlier camera and/or submersible (need to check reference)
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
Broken Spur active, confirmed mid-ocean ridge N MAR 29.1700 -43.1717 3100 1993 submersible Alvin; earlier in 1993, water column anomalies and towed camera did not confirm activity
EPR, 17 12'S active, confirmed mid-ocean ridge S EPR -17.2000 -113.1500 2590 1993 submersible Nautile
Teotihuacan active, confirmed mid-ocean ridge N EPR 15.7333 -105.4333 2300 2010 submersible Nautile; 1997 plume only
CIR, 8-17 S, Segment 4, 10.9 S active, inferred mid-ocean ridge CIR -10.9000 66.7000 3500 2010 plume only
Ashadze-4 inactive mid-ocean ridge N MAR 12.9700 -44.8500 4530 2007 ROV VICTOR 6000 did not find hydrothermal activity
North Cleft, high temperature active, confirmed mid-ocean ridge JdF Ridge 44.9800 -130.2000 2300 1987 camera/CTD tows discovered low-temperature vents; 1988 submersible Alvin sampled low-temperature vents; 1990 submersible Alvin discovered black smoker
Lucky Strike segment, southern end active, inferred mid-ocean ridge N MAR 37.0500 -32.4200 2600 1994 plume only
EPR, 28 S, Segment W3 active, inferred mid-ocean ridge S EPR -28.0170 -112.9040 2130 1998 plume only
SWIR, D36 active, inferred mid-ocean ridge SWIR -52.7490 11.7110 3981 2000-2001 plume and dredge only
Tevnia active, inferred mid-ocean ridge N EPR 10.3333 -103.5533 2925 1994 submersible Alvin did not confirm activity
Knipovich Ridge, 76 48'N active, inferred mid-ocean ridge Knipovich Ridge 76.7833 8.0000 3500 1996 temperature anomaly and towed video did not confirm activity
EPR, 18 10'S active, confirmed mid-ocean ridge S EPR -18.1700 -113.3440 2700 1993 submersible Nautile; 1983 temperature and light attenuation anomalies
Zenith-Victory inactive mid-ocean ridge N MAR 20.1292 -45.6225 2390 2008 (need citation to confirm that the field was discovered by TV-profiling and dredging)
Pescadero Basin, Auka active, confirmed mid-ocean ridge Gulf of California 23.9567 -108.8618 3685 2015 ROV Doc Ricketts; 1990 or earlier plume only
Nereus Deep active, inferred mid-ocean ridge Red Sea 23.1670 37.2830 2400 1972 deposits only
Ribeira Quente active, confirmed mid-ocean ridge Terceira Rift 37.7250 -25.3160 10 1986 or earlier, likely from shore or by SCUBA
Romanche Fracture Zone inactive mid-ocean ridge S MAR -0.9767 -24.5133 3100 NotProvided
Pacific-Antarctic Ridge, 60 S segment active, inferred mid-ocean ridge Pacific-Antarctic Ridge -60.0000 -152.0000 2300 2009 plume only
GEISEIR site 7, segment K3 active, inferred mid-ocean ridge SEIR -41.8020 81.8380 2540 1996 plume only; 2010 plume only
MAR, 15 50'N inactive mid-ocean ridge N MAR 15.8667 -46.6667 3000 NotProvided
Baby Bare Seamount active, confirmed mid-ocean ridge JdF Ridge 47.7100 -127.7870 2600 1995 submersible Alvin
Mounds and Microbes active, confirmed mid-ocean ridge N EPR 9.4500 -104.5383 2950 2002 submersible Alvin; 1994 submersible Alvin did not confirm activity
Steinaholl Vent Field active, confirmed mid-ocean ridge Reykjanes Ridge 63.1000 -24.5333 350 1990 plume, echosounding, and towed video; 1993 plume only (included echosounding for more precise location)
EPR, 21 54'S active, inferred mid-ocean ridge S EPR -21.9000 -114.5000 2800 1987-1988 deposits only [need to check Fouquet et al. (1993) for confirmation]
GEISEIR site 21, segment L3 active, inferred mid-ocean ridge SEIR -42.0050 87.8808 2400 2010 plume only
SEIR-WXC07 active, inferred mid-ocean ridge SEIR -50.2500 138.3000 2420 2015 plume only
GEISEIR site 11, segment K4 active, inferred mid-ocean ridge SEIR -42.5375 82.8266 2600 2010 plume only
Solitaire Field active, confirmed mid-ocean ridge CIR -19.5450 65.8500 2630 2009 submersible Shinkai 6500; 2006 plume only
Galapagos Rift, 95 W inactive mid-ocean ridge Galapagos Rift 2.5000 -95.1667 2600 NotProvided
North FAMOUS active, inferred mid-ocean ridge N MAR 36.9670 -32.9670 2500 1994 plume only
Gakkel Ridge, Site 5 active, inferred mid-ocean ridge Gakkel Ridge 86.3500 37.0000 3600 2001 plume only
Petersburgskoe inactive mid-ocean ridge N MAR 19.8666 -45.8666 3100 2010 dredging only
EPR, 7 25'S active, confirmed mid-ocean ridge S EPR -7.4167 -107.8000 2750 1985/86 or 1989 TV grab (need to check references to confirm activity); 1998 submersible Alvin
SESCA active, inferred mid-ocean ridge Gorda Ridge 40.7500 -127.5200 3300 1986 sediments and heat-flow measurements
Logatchev-4 inactive mid-ocean ridge N MAR 14.7063 -44.9083 2000 2004 TV sled observed inactive field [ROV QUEST was also on this cruise, but Kuhn et al. (2004) do not report its use at Logatchev-4]
Axial Seamount, ASHES active, confirmed mid-ocean ridge JdF Ridge 45.9333 -130.0140 1540 1984 submersible Alvin
Menez Gwen active, confirmed mid-ocean ridge N MAR 37.8417 -31.5250 865 1994 submersible Nautile
EPR, 28.3 S, Segment W3 active, inferred mid-ocean ridge S EPR -28.3000 -112.9830 2220 1998 plume only
EPR, 28.7 S, Segment W4 active, inferred mid-ocean ridge S EPR -28.7000 -112.9880 2350 1998 plume only
SWIR, 53.2 E active, inferred mid-ocean ridge SWIR -36.1010 53.2550 2218 2008 plume and dredge only
GEISEIR site 33, segment O2 active, inferred mid-ocean ridge SEIR -47.2383 97.1566 2700 2009 plume only
EPR, southern 16 N segment active, inferred mid-ocean ridge N EPR 15.5000 -105.4000 2300 1997 plume only
W Los Huellos Caldera active, inferred mid-ocean ridge Galapagos Rift 1.0000 -90.6000 1600 2005 plume only
MAR, 25 50'N inactive mid-ocean ridge N MAR 25.8083 -44.9833 3000 NotProvided
EPR, 17 S active, inferred mid-ocean ridge S EPR -17.0000 -113.1170 2680 1993 plume only
EPR, 13 N active, confirmed mid-ocean ridge N EPR 12.8333 -103.9500 2630 1982 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity
CIR, 8-17 S, Segment 4, 11.2 S active, inferred mid-ocean ridge CIR -11.2000 66.5000 3800 2010 plume only
Gorda Ridge, GR-15 active, inferred mid-ocean ridge Gorda Ridge 42.9500 -126.5500 3365 1985 plume only
SWIR, D50B active, inferred mid-ocean ridge SWIR -52.4200 12.7480 3913 2000-2001 plume and dredge only
Magic Mountain active, confirmed mid-ocean ridge Explorer Ridge 49.7500 -130.2667 1850 1984 submersible Pisces IV
EPR, 10 44.6'N active, confirmed mid-ocean ridge N EPR 10.7433 -103.6500 2580 1985 Argo video tow with temperature
Knipovich Ridge, 77 40'N active, inferred mid-ocean ridge Knipovich Ridge 77.6300 7.5800 3000 2000 plume only
EPR, 18 26'S active, confirmed mid-ocean ridge S EPR -18.4333 -113.3833 2650 1993 submersible Nautile; 1983 seafloor photos, temperature anomalies, and deposits did not confirm activity; 1984 submersible Cyana observed only inactive sites; 1985/86 or 1989 TV grab (need to check references to confirm activity)
Landing Stage active, inferred mid-ocean ridge SWIR -37.5000 51.0000 2300 2014 leg 2 or 3 of the 30th Chinese Cruise
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
Aden active, confirmed mid-ocean ridge Aden Ridge 11.9500 43.6667 1600 1984 submersible Cyana
MAR, 33 S active, inferred mid-ocean ridge S MAR -32.9676 -14.4517 2600 2013 plume only
Europa active, inferred mid-ocean ridge Mid-Cayman Rise 18.3500 -81.8500 2400 2009 plume only, not observed on dive with hybrid ROV Nereus
Pacific-Antarctic Ridge, 64 S segment active, inferred mid-ocean ridge Pacific-Antarctic Ridge -64.5000 -170.0000 2300 2009 plume only
GEISEIR site 10, segment K4 active, inferred mid-ocean ridge SEIR -42.4770 82.7100 2500 1996 plume only; 2010 plume only
MAR, 16 46'N inactive mid-ocean ridge N MAR 16.7950 -46.3800 3300 NotProvided
Main Endeavour Field active, confirmed mid-ocean ridge JdF Ridge 47.9487 -129.0981 2220 1984 submersible Alvin; 1982 dredge only
AHA Field active, confirmed mid-ocean ridge N EPR 1.7333 -102.2830 2850 2000 towed imaging ARGO-II
Grimsey Field active, confirmed mid-ocean ridge Kolbeinsey Ridge 66.6067 -17.6542 400 1997 submersible Jago
EPR, 23 30'S active, confirmed mid-ocean ridge S EPR -23.5333 -115.5667 2600 1987 or earlier [need to check Marchig & Gundlach (1987)]; 2005 submersible Alvin
GEISEIR site 23, segment M2 active, inferred mid-ocean ridge SEIR -42.0272 89.2205 2400 2009 plume only
SEIR-WXC06 active, inferred mid-ocean ridge SEIR -50.2500 138.5500 2400 2015 plume only
GEISEIR site 12, segment K4 active, inferred mid-ocean ridge SEIR -42.6600 83.0366 2600 2010 plume only
Area EX/FX active, inferred mid-ocean ridge CIR -21.4000 68.7666 3300 1986 plume and sediments
Navidad active, confirmed mid-ocean ridge Galapagos Rift 2.5300 -94.0750 2380 2005 towed video Medea
S AMAR 1 active, inferred mid-ocean ridge N MAR 36.0830 -34.0830 2630 1992 plume only; 1994 plume only
Gakkel Ridge, 85 E active, inferred mid-ocean ridge Gakkel Ridge 85.6500 84.8333 3900 2001 plume only; 2007 towed video did not confirm activity
Bubbylon active, confirmed mid-ocean ridge N MAR 37.8000 -31.5333 1000 2010 ROV MARUM-QUEST, same cruise as plume discovered by multibeam echosounder
EPR, 14 18'S active, inferred mid-ocean ridge S EPR -14.3000 -112.6670 2630 1993 plume only
Guaymas Basin, Northern Trough inactive mid-ocean ridge Gulf of California 27.3050 -111.5067 2000 1977 submersible Seacliff (hydrothermal deposits only)
CIR, 8-17 S, Segment 5, 12.25 S active, inferred mid-ocean ridge CIR -12.2500 65.7000 4000 2010 plume only
Semyenov-2 active, confirmed mid-ocean ridge N MAR 13.5137 -44.9630 2440 2009 TV grab and photo-TV profiling; 2007 deposits only
Axial Seamount, CASM active, confirmed mid-ocean ridge JdF Ridge 45.9892 -130.0272 1580 1983 submersible Pisces IV
EPR, 29.5 S, Segment E1 active, inferred mid-ocean ridge S EPR -29.5000 -111.7200 2580 1998 plume only
SWIR, Plume 1, Segment 17 active, inferred mid-ocean ridge SWIR -31.1830 58.5000 3600 1997 plume only
GEISEIR site 34, segment O3 active, inferred mid-ocean ridge SEIR -47.4145 97.4373 2700 2009 plume only
EPR 87D1 Seamount inactive mid-ocean ridge N EPR 11.5333 -103.8600 2090 NotProvided
Rose Garden active, confirmed mid-ocean ridge Galapagos Rift 0.8058 -86.2267 2550 1977 submersible Alvin; 1976 plume and photographs of clam shells did not confirm activity (note: Rose Garden is used here as the name of the vent field, but Rose Garden vent site itself not discovered until 1979)
MAR, 27 N active, inferred mid-ocean ridge N MAR 27.0000 -44.5000 2900 1993 plume only
EPR, 17 34'S active, confirmed mid-ocean ridge S EPR -17.5667 -113.2333 2600 1994 submersible Shinkai 6500; 1996 Argo II towed video
EPR, 13 N, Marginal High active, confirmed mid-ocean ridge N EPR 12.7090 -103.9160 2650 1984 submersible Cyana; 1981 towed camera, dredging, and plume did not confirm activity
Stockwork active, inferred mid-ocean ridge JdF Ridge 47.9000 -129.1240 2300 2005 submersible Alvin (need publication to determine if confirmed)
Saguaro Field active, confirmed mid-ocean ridge S EPR -31.8500 -112.0333 2330 1999 submersible Alvin; 1998 plume only
GEISEIR site 22, segment L3 active, inferred mid-ocean ridge SEIR -42.1130 88.0420 2400 1996 plume only; 2009 plume only
North Cleft, low temperature active, confirmed mid-ocean ridge JdF Ridge 44.8833 -130.2667 2250 1987-1989 camera/CTD tows
SWIR, D54 active, inferred mid-ocean ridge SWIR -52.4370 13.3120 4029 2000-2001 plume and dredge only
Magic Mountain, 3-km south active, inferred mid-ocean ridge Explorer Ridge 49.7250 -130.2667 1850 2002 AUV ABE 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)
Lucky B active, inferred mid-ocean ridge Lena Trough 81.3610 -3.4400 4000 1999 dredging only
EPR, 18 32'S active, confirmed mid-ocean ridge S EPR -18.5550 -113.4160 2647 1993 submersible Nautile
Area JX active, inferred mid-ocean ridge CIR -22.9666 69.1833 3500 1986 plume only (camera tow did not confirm)
Alarcon Rise, Ja Sit active, confirmed mid-ocean ridge Gulf of California 23.3765 -108.5315 2304 2012 ROV Doc Ricketts
Discovery Deep active, inferred mid-ocean ridge Red Sea 21.2830 38.0500 2100 1965 "confirmed" hot brine and cored seafloor, but see Table 1 in Miller et al. (1966) for historical measurements
MAR, 30 S active, inferred mid-ocean ridge S MAR -29.9505 -13.8545 3379 2013 plume only
Beebe active, confirmed mid-ocean ridge Mid-Cayman Rise 18.5466 -81.7182 4957 2010 AUV Autosub6000 and HyBIS TVG; 2009 plume only
EPR, 14 35'S active, inferred mid-ocean ridge S EPR -14.5830 -112.6670 2630 1993 plume only
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
Puy des Folles active, inferred mid-ocean ridge N MAR 20.5083 -45.6417 2000 1996 submersible Nautile observed only inactive vents
High-Rise Field active, confirmed mid-ocean ridge JdF Ridge 47.9666 -129.0894 2200 1988 submersible Alvin
MAR, 43 N active, inferred mid-ocean ridge N MAR 43.0000 -29.0000 3400 1986 or earlier plume only
Pito Seamount active, confirmed mid-ocean ridge S EPR -23.3275 -111.6402 2270 1993 submersible Nautile
Kairei Field active, confirmed mid-ocean ridge CIR -25.3195 70.0400 2460 2000 ROV Kaiko; 1993 plume only
GEISEIR site 24, segment M3 active, inferred mid-ocean ridge SEIR -43.0369 91.0357 2400 2009 plume only
Guaymas Basin, Northern Trough_2 active, confirmed mid-ocean ridge Gulf of California 27.4110 -111.3879 1800 2015 ROV Hybis
GEISEIR site 13, segment L1 active, inferred mid-ocean ridge SEIR -41.0125 86.0608 2800 2010 plume only
Dodo Field active, confirmed mid-ocean ridge CIR -18.3470 65.3050 2730 2009 submersible Shinkai 6500; 2006 plume only
Galapagos Rift, 93.7 W active, inferred mid-ocean ridge Galapagos Rift 2.4970 -93.7700 2220 2005 plume only
Rainbow active, confirmed mid-ocean ridge N MAR 36.2300 -33.9020 2320 1997 submersible Nautile
Chile Triple Junction, 10 km north active, inferred mid-ocean ridge Chile Rise -46.2000 -75.8333 3000 2010 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
Irinovskoye active, confirmed mid-ocean ridge N MAR 13.3327 -44.9099 3000 2013 ROV Victor6000; 2007 dredge only; 2009 or 2011 did not confirm
Axial Seamount, International District active, confirmed mid-ocean ridge JdF Ridge 45.9266 -129.9795 1544 1986 submersible Pisces IV
EPR, 29.8 S, Segment E1 active, inferred mid-ocean ridge S EPR -29.8000 -111.7300 2580 1998 plume only
SWIR, Plume 2, Segment 16 active, inferred mid-ocean ridge SWIR -31.0670 58.9670 4200 1997 plume only
GEISEIR site 35, segment O3 active, inferred mid-ocean ridge SEIR -47.6179 97.8678 2600 2009 plume only
EPR, 11 30'N active, inferred mid-ocean ridge N EPR 11.4833 -103.7833 2422 1981 towed camera and plume did not confirm activity; 1988 submersible Alvin dive #1996 (need reference to confirm activity)
DSDP Hole 504B inactive mid-ocean ridge Galapagos Rift 1.2267 -83.7300 3500 NotProvided
MAR, 30 N active, inferred mid-ocean ridge N MAR 30.0333 -42.5000 3400 1993 plume only
EPR, 17 42'S active, inferred mid-ocean ridge S EPR -17.7000 -113.2500 2600 1993 plume only
EPR, 14 N seamount inactive mid-ocean ridge N EPR 14.1500 -104.3667 2600 NotProvided
AAR KR1, Mujin active, inferred mid-ocean ridge SEIR -62.1000 158.8000 2100 2011 plume and biological samples
MAR, 28 S active, inferred mid-ocean ridge S MAR -27.7936 -13.3730 3217 2013 plume only
Chile Rise, Segment N8 active, inferred mid-ocean ridge Chile Rise -38.7167 -91.5667 3330 1998 plume only
Walsh active, inferred mid-ocean ridge Mid-Cayman Rise 17.8333 -81.8333 4000 2009 plume only; 2013 plume only
Sea Cliff active, confirmed mid-ocean ridge Gorda Ridge 42.7550 -126.7083 2800 1988 submersible Sea Cliff; 1985 plume only; 1986 dredge and camera tow did not confirm activity
SWIR, D9B active, inferred mid-ocean ridge SWIR -52.7070 18.8170 3931 2000-2001 plume and dredge only
West Valley active, inferred mid-ocean ridge JdF Ridge 48.4833 -129.0417 3000 1987 and 1988 deposits only (towed camera did not confirm activity)
EPR, 9 33'N active, confirmed mid-ocean ridge N EPR 9.5583 -104.2500 2574 1989 Argo I towed video; 1991 submersible Alvin
Aurora active, confirmed mid-ocean ridge Gakkel Ridge 82.8833 -6.2500 4100 2001 shimmering water in camera tow and sulfide chimney in dredge
EPR, 20 06'S active, confirmed mid-ocean ridge S EPR -20.1000 -113.7080 3000 1981 Angus camera tow; 1984 submersible Cyana
Pobeda-1 active, inferred mid-ocean ridge N MAR 17.1500 -46.4200 3100 2014/2015 video profiling, TVgrab and corer
Alarcon Rise, Meyibo active, confirmed mid-ocean ridge Gulf of California 23.3553 -108.5443 2295 2012 ROV Doc Ricketts
Red Sea Rift, 18 N active, inferred mid-ocean ridge Red Sea 17.9667 40.0667 1500 1980 submersible Pisces XI (deposits only)
Saldanha active, confirmed mid-ocean ridge N MAR 36.5667 -33.4333 2300 1998 submersible Nautile
Chile Triple Junction active, inferred mid-ocean ridge Chile Rise -46.3000 -75.8000 3000 2010 plume only
EPR, 14 S active, confirmed mid-ocean ridge S EPR -13.9667 -112.4667 2635 1985/86 or 1989 TV grab (need to check references to confirm activity); 1993 plume only; 1994 submersible Shinkai 6500
EPR/Tamayo intersection active, inferred mid-ocean ridge N EPR 22.9333 -108.0667 3200 1979 submersible Alvin did not confirm activity
MAR, 14 54'N active, inferred mid-ocean ridge N MAR 14.9200 -44.9000 3500 1988 or earlier seafloor photographs did not confirm hydrothermal activity
Mothra Field active, confirmed mid-ocean ridge JdF Ridge 47.9233 -129.1082 2270 1996 ROV ROPOS; 1986 plume only
Reykjanes Ridge, Area A active, inferred mid-ocean ridge Reykjanes Ridge 62.4500 -25.4330 500 NotProvided
Rapa Nui active, confirmed mid-ocean ridge S EPR -21.5620 -114.3000 2845 1999 submersible Alvin; 1987-1988 deposits only
MESO Zone inactive mid-ocean ridge CIR -23.3927 69.2422 2850 1993 TV grab and water column measurements
GEISEIR site 25, segment M4 active, inferred mid-ocean ridge SEIR -43.3115 92.1335 2700 2009 plume only
Luso active, confirmed mid-ocean ridge N MAR 38.9833 -29.8833 570 2018 ROV Luso
GEISEIR site 14, segment L1 active, inferred mid-ocean ridge SEIR -41.0716 86.1550 2700 2010 plume only
Vityaz megamullion active, inferred mid-ocean ridge CIR -5.4000 68.5833 3500 1979 plume and deposits only
Iguanas-Pinguinos active, confirmed mid-ocean ridge Galapagos Rift 2.1000 -91.9350 1640 2005 towed video Medea
EPR, 17 44'S active, confirmed mid-ocean ridge S EPR -17.7330 -113.2660 2622 1998 submersible Alvin; 1993 plume only; not explored by Nautile in 1993 or Shinkai 6500 in 1994
AAR KR2 active, inferred mid-ocean ridge SEIR -60.0000 152.5000 3200 2011 plume only
Lilliput active, confirmed mid-ocean ridge S MAR -9.5500 -13.1800 1500 2005 ROV Quest
CIR, 8-17 S, Segment 6, 14.3 S active, inferred mid-ocean ridge CIR -14.3000 66.1000 3500 2010 plume only
Neptune's Beard active, inferred mid-ocean ridge N MAR 12.9100 -44.9000 4100 1984 plume only; 2000 TV survey did not confirm activity
EPR, 30.1 S, Segment E1 active, inferred mid-ocean ridge S EPR -30.1330 -111.7640 2480 1998 plume only
SWIR, unnamed, Segment 26 active, inferred mid-ocean ridge SWIR -37.6080 50.8527 2800 2008 dredge only DY115-20 Leg 6
GEISEIR site 36, segment O3 active, inferred mid-ocean ridge SEIR -47.7009 98.0631 2700 2009 plume only
EPR, 11 42'N active, confirmed mid-ocean ridge N EPR 11.7000 -103.8500 2580 1984 Angus camera (or 1985 Argo video) tow with temperature
EPR, 1 S active, inferred mid-ocean ridge S EPR -0.8000 -102.4600 2800 2005 plume only
TAG active, confirmed mid-ocean ridge N MAR 26.1367 -44.8267 3670 1985 towed camera and temperature anomaly; 1986 submersible Alvin
Suakin Deep active, inferred mid-ocean ridge Red Sea 19.6333 38.7333 2850 1972 deposits only
MAR, 27 S active, inferred mid-ocean ridge S MAR -27.1476 -13.4753 3341 2013 plume only
Chile Rise, Segment N9A active, inferred mid-ocean ridge Chile Rise -39.0500 -91.5833 3450 1998 plume only
Wagner Basin active, inferred mid-ocean ridge Gulf of California 31.0666 -114.0833 120 2007 echosounder and grab samples
South Cleft active, confirmed mid-ocean ridge JdF Ridge 44.6667 -130.3667 2250 1981 deep-tow photographs; 1984 submersible Alvin
SEIR inactive mid-ocean ridge SEIR -28.0614 74.1733 5000 NotProvided
Dellwood Seamount inactive mid-ocean ridge Explorer Ridge 50.7470 -130.8961 800 1974 or earlier deposits only; 2018 ROV Hercules inactive
EPR, 9 40'N active, confirmed mid-ocean ridge N EPR 9.6500 -104.2600 2572 1989 Argo I towed video; 1991 submersible Alvin
Loki's Castle active, confirmed mid-ocean ridge Mohns Ridge 73.5500 8.1500 2400 2008 ROV Bathysaurus
EPR, 20 S active, inferred mid-ocean ridge S EPR -20.0333 -113.6843 3000 1999 submersible Alvin did not confirm activity
SEIR-WXC25 active, inferred mid-ocean ridge SEIR -50.2500 131.9000 3050 2015 plume only
Alarcon Rise, Tzab-ek active, confirmed mid-ocean ridge Gulf of California 23.3526 -108.5597 2249 2015 ROV Doc Ricketts
Eye of Mordor Seamount active, inferred mid-ocean ridge Galapagos Rift 1.9410 -91.3100 1555 2005 plume only
Lost City active, confirmed mid-ocean ridge N MAR 30.1250 -42.1183 800 2000 towed video ARGO-II and submersible Alvin
EPR, 10 02'N active, confirmed mid-ocean ridge N EPR 10.0330 -104.3300 2560 1992 submersible Alvin
EPR, 15 24'S active, inferred mid-ocean ridge S EPR -15.4000 -112.8350 2640 1993 plume only
Green Seamount inactive mid-ocean ridge N EPR 20.8033 -109.2833 2000 1982 submersible Alvin observed only inactive
MAR, south of 15 20'N fracture zone active, inferred mid-ocean ridge N MAR 15.0833 -45.0000 3000 1988 plume only; 1992 submersible Nautile did not observe active vents
Floc active, confirmed mid-ocean ridge JdF Ridge 46.3133 -129.7050 2290 1993 DEEPTOW and submersible Alvin
Reykjanes Ridge, Area B active, inferred mid-ocean ridge Reykjanes Ridge 59.8167 -29.6833 1000 1992 submersible Mir did not find vents
EPR, 22 30'S active, inferred mid-ocean ridge S EPR -22.5000 -114.3670 2600 1985/86 or 1989 TV grab (need to check references to confirm activity)
Edmond Field active, confirmed mid-ocean ridge CIR -23.8780 69.5960 3320 2001 ROV Jason
GEISEIR site 26, segment M4 active, inferred mid-ocean ridge SEIR -43.6901 92.8451 2500 2009 plume only
MAR, 17 S active, inferred mid-ocean ridge S MAR -17.2522 -14.2270 3280 2013 plume only
CIR, Segment 3, Hydrothermal Plume Site active, inferred mid-ocean ridge CIR -24.0000 69.6667 2840 1987 plume only; 2005/2006 plume only
Stealth active, confirmed mid-ocean ridge S EPR -17.6167 -113.2330 2600 1996 Argo II towed video; 1993 plume only; 1998 submersible Alvin
MAR, 4 02'S active, inferred mid-ocean ridge S MAR -4.0333 -12.2500 4000 2005 plume only
MAR, 4 48'S active, confirmed mid-ocean ridge S MAR -4.8058 -12.3742 3050 2005 AUV ABE (cruise CD169 ) followed by ROV Quest (cruise M64/1)
CIR, 8-17 S, Segment 7 active, inferred mid-ocean ridge CIR -17.0000 66.8000 3100 2010 plume only
Ashadze-1 active, confirmed mid-ocean ridge N MAR 12.9733 -44.8633 4200 2003 TV profiling; 2007 ROV Victor 6000
EPR, 30.4 S, Segment E2 active, inferred mid-ocean ridge S EPR -30.3750 -111.7640 2320 1998 plume only
SWIR, D57 active, inferred mid-ocean ridge SWIR -52.2240 13.7380 3517 2000-2001 plume and dredge only
GEISEIR site 37, segment O4 active, inferred mid-ocean ridge SEIR -47.7483 98.1756 2800 2009 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)
EPR, 1.4 S, off-axis active, confirmed mid-ocean ridge S EPR -1.3690 -102.4560 3000 2008 towed video
MAR, 22 30'N inactive mid-ocean ridge N MAR 22.5000 -45.0050 2800 NotProvided
SEIR-WXC22 active, inferred mid-ocean ridge SEIR -50.2500 132.1000 2950 2015 plume only
Alarcon Rise/Tamayo intersection active, inferred mid-ocean ridge Gulf of California 23.2336 -108.6168 2358 2015 ROV Doc Ricketts did not confirm activity
Atlantis II Deep active, inferred mid-ocean ridge Red Sea 21.3417 38.0750 2200 1965 "confirmed" hot brine and cored seafloor, but see Table 1 in Miller et al. (1966) for historical measurements
MAR, 23 S active, inferred mid-ocean ridge S MAR -23.7428 -13.3936 2880 2013 plume only
EPR, 3.9 N offset active, confirmed mid-ocean ridge N EPR 3.9170 -102.2330 2875 1989 or earlier Deep Tow photographs (cruise RIFTS or PAPATUA)
Gakkel Ridge, Site 6 active, inferred mid-ocean ridge Gakkel Ridge 86.5333 43.0000 3000 2001 plume only
Consag Basin active, inferred mid-ocean ridge Gulf of California 30.6333 -113.9083 140 2007 echosounder and grab samples
East Blanco Depression active, confirmed mid-ocean ridge JdF Ridge 44.2170 -129.6250 3460 1994 ROV U.S. Navy's Advanced Tethered Vehicle
Explorer Deep inactive mid-ocean ridge Explorer Ridge 50.1000 -129.7500 3200 1969, deposits only
EPR, 9 47'N active, confirmed mid-ocean ridge N EPR 9.7750 -104.2802 2560 1989 Argo I towed video; 1991 submersible Alvin
Kolbeinsey Field active, confirmed mid-ocean ridge Kolbeinsey Ridge 67.0833 -18.7167 110 1988 submersible GEO
Animal Farm active, confirmed mid-ocean ridge S EPR -18.6080 -113.4000 2675 1993 submersible Nautile
GEISEIR site 15, segment L1 active, inferred mid-ocean ridge SEIR -41.2230 86.3892 2500 2010 plume only
E Eye of Mordor inactive mid-ocean ridge Galapagos Rift 1.9058 -91.2310 1600 2005 towed video Medea found inactive chimneys
N Oceanographer active, inferred mid-ocean ridge N MAR 35.2830 -34.8670 2600 1992 plume only
Central Cleft, off-axis active, confirmed mid-ocean ridge JdF Ridge 44.7583 -130.2750 2200 2000 ROV Tiburon
EPR, 16 08'S active, inferred mid-ocean ridge S EPR -16.1300 -113.0000 2640 1993 plume only
Red Seamount active, confirmed mid-ocean ridge N EPR 20.8033 -109.3783 2000 1982 submersible Alvin
Logatchev-1 active, confirmed mid-ocean ridge N MAR 14.7520 -44.9785 3050 1993-1994 TV grab and towed photo system; 1995 submersible Mir followed by submersible Nautile
Source active, confirmed mid-ocean ridge JdF Ridge 46.1550 -129.8100 2055 1993 submersible Alvin
South Kurchatov active, inferred mid-ocean ridge N MAR 40.4670 -29.5500 2900 1992 plume only; 1995 plume only
EPR, 23 50'S active, confirmed mid-ocean ridge S EPR -23.8233 -115.4558 2650 2005 submersible Alvin; 1990 or earlier towed TV camera did not confirm activity
Mount Jourdanne inactive mid-ocean ridge SWIR -27.8500 63.9333 2940 1998 submersible Shinkai 6500
GEISEIR site 27, segment M5 active, inferred mid-ocean ridge SEIR -43.9805 93.4571 2700 2009 plume only
MAR, 25 S active, inferred mid-ocean ridge S MAR -25.3350 -13.6305 2570 2013 plume only
SWIR, Plume 6 active, inferred mid-ocean ridge SWIR -27.7670 65.1330 3200 1997 plume only
EPR, 2 S active, confirmed mid-ocean ridge S EPR -2.2200 -102.6550 2900 2008 towed video and AUV ABE
MAR, 23 35'N inactive mid-ocean ridge N MAR 23.5833 -45.0000 3500 1980 submersible Alvin did not observe hydrothermal activity
Rehu-Marka active, confirmed mid-ocean ridge S EPR -17.4333 -113.2000 2590 1993 submersible Nautile; 1984 submersible Cyana - Auzende et al. (1996) says that no active black smokers were discovered but Krasnov et al. (1997) says one black smoker observed
Carlsberg Ridge, 63 40'E active, inferred mid-ocean ridge Carlsberg Ridge 3.7000 63.6666 3500 2007 plume only
MAR, 7 57'S active, inferred mid-ocean ridge S MAR -7.9500 -13.4420 2600 2001 plume only
Tempus Fugit active, confirmed mid-ocean ridge Galapagos Rift 0.7683 -85.9100 2560 2011 ROV Little Hercules
Ashadze-3 inactive mid-ocean ridge N MAR 12.9860 -44.8610 4200 2005 plume and dredge only
EPR, 30.8 S, Segment E2 active, inferred mid-ocean ridge S EPR -30.7500 -111.8770 2360 1998 plume only
Boomerang Seamount active, inferred mid-ocean ridge SEIR -37.7217 77.8250 850 1996 plume and wax core only
SWIR, D62 active, inferred mid-ocean ridge SWIR -52.2530 15.1030 3990 2000-2001 plume and dredge only
GEISEIR site 38, segment O4 active, inferred mid-ocean ridge SEIR -48.0048 98.8232 2800 2009 plume only
EPR, 13 N, SE Seamount inactive mid-ocean ridge N EPR 12.7000 -103.8600 2500 1981 towed camera, dredging, and plume did not confirm activity; 1982 and 1984 submersible Cyana did not confirm activity
SEIR-WXC17 active, inferred mid-ocean ridge SEIR -50.3000 133.8000 2780 2015 plume only
Ringvent active, confirmed mid-ocean ridge Gulf of California 27.5083 -111.6792 1740 2016 submersible Alvin; 2009 towed camera/CTD/bottles
Aden New Century Mountains active, inferred mid-ocean ridge Aden Ridge 12.0833 45.6667 800 2000-2001 plume only
MAR, 19 S active, inferred mid-ocean ridge S MAR -19.3301 -11.9421 2707 2013 plume only
EPR, 8 38'N active, confirmed mid-ocean ridge N EPR 8.6333 -104.2000 2550 2003 submersible Alvin; 1989 dredge only; 2002 plume only
Gakkel Ridge, Site 7 active, inferred mid-ocean ridge Gakkel Ridge 86.9833 55.5000 3800 2001 plume only
Jade Emperor Mountain inactive mid-ocean ridge SWIR -37.9400 49.2600 1500 2010 video sled, plume survey, and geological sampling all suggest inactive
Gorda Ridge, 41 30'N inactive mid-ocean ridge Gorda Ridge 41.5167 -127.4500 3350 1984 deposits only
ET active, inferred mid-ocean ridge JdF Ridge 48.1993 -128.9257 2500 NotProvided
EPR, 9 50'N active, confirmed mid-ocean ridge N EPR 9.8300 -104.2900 2520 1989 Argo I towed video
Kolbeinsey Ridge, 69 N active, inferred mid-ocean ridge Kolbeinsey Ridge 68.7581 -16.0000 1200 1980 or earlier sediments only
EPR, Ridge 3, 20 40'S active, confirmed mid-ocean ridge S EPR -20.3333 -113.6792 3050 1983 Deep Tow camera
GEISEIR site 16, segment L3 active, inferred mid-ocean ridge SEIR -41.5883 87.2615 2500 2010 plume only
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