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mid-ocean ridge

Below is the subset of Vent Fields that contain the Activity, Tectonic Setting, Region, Ocean, or National Jurisdiction listed above.
You can sort the list below by clicking on a column header.

Vent Field Name IDsort icon Activity Tectonic Setting Region Latitude Longitude Maximum or Single Reported Depth Year and How Discovered
Aden active, confirmed mid-ocean ridge Tadjoura Rift, western Gulf of Aden 11.9500 43.6667 1600 1984 submersible Cyana
Aden New Century Mountains active, inferred mid-ocean ridge Tadjoura Rift, western Gulf of Aden 12.0833 45.6667 800 2000-2001 plume only
AHA Field active, confirmed mid-ocean ridge N EPR 1.7333 -102.2830 2850 2000 towed imaging ARGO-II
AMAR active, inferred mid-ocean ridge N MAR 36.3833 -33.6500 2600 1992 plume only; 1994 plume only
Animal Farm active, confirmed mid-ocean ridge S EPR -18.6080 -113.4000 2675 1993 submersible Nautile
Ashadze active, confirmed mid-ocean ridge N MAR 12.9733 -44.8633 4200 2003 TV profiling; 2007 ROV Victor 6000
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
Ashadze 3 active, inferred mid-ocean ridge N MAR 12.9860 -44.8610 4200 2005 plume and dredge only
Ashadze 4 inactive mid-ocean ridge N MAR 12.9700 -44.8500 4530 2007 ROV VICTOR 6000 did not find hydrothermal activity
Atlantis II Deep active, inferred mid-ocean ridge Red Sea 21.3670 38.0830 2200 1965 "confirmed" hot brine and cored seafloor, but see Table 1 in Miller et al. (1966) for historical measurements
Aurora active, confirmed mid-ocean ridge Gakkel Ridge 82.8833 -6.2500 4100 2001 shimmering water in camera tow and sulfide chimney in dredge
Axial Volcano, ASHES active, confirmed mid-ocean ridge JdF Ridge 45.9333 -130.0167 1540 1984 submersible Alvin
Axial Volcano, CASM active, confirmed mid-ocean ridge JdF Ridge 45.9900 -130.0300 1580 1983 submersible Pisces IV
Axial Volcano, South Rift Zone active, confirmed mid-ocean ridge JdF Ridge 45.9417 -129.9833 1544 1986 submersible Pisces IV
Baby Bare Seamount active, confirmed mid-ocean ridge JdF Ridge 47.7100 -127.7870 2600 1995 submersible Alvin
Baily's Beads active, confirmed mid-ocean ridge S MAR -13.2800 -14.4100 2288 2009 towed video
Beebe active, confirmed mid-ocean ridge Mid-Cayman Rise 18.3279 -81.4308 4960 April 2010 (Autosub6000 AUV and HyBIS TVG; 2009 plume only
Boomerang Seamount active, inferred mid-ocean ridge SEIR -37.7217 77.8250 850 1996 plume and wax core only
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
Brown Bear Seamount inactive mid-ocean ridge JdF Ridge 46.0333 -130.5500 1500 NotProvided
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
Calyfield active, confirmed mid-ocean ridge Galapagos Rift 0.8300 -89.6083 1660 2002 submersible Alvin
Carlsberg Ridge, 1.67 S inactive mid-ocean ridge Carlsberg Ridge -1.6768 67.7700 4500 NotProvided
Carlsberg Ridge, CR2003 active, inferred mid-ocean ridge Carlsberg Ridge 6.0500 60.9500 3500 2003 plume only; 2007 plume only
Central Cleft, off-axis active, confirmed mid-ocean ridge JdF Ridge 44.7583 -130.2750 2200 2000 ROV Tiburon
Chile Rise, Segment N8 active, inferred mid-ocean ridge Chile Rise -38.7167 -91.5667 3330 1998 plume only
Chile Rise, Segment N9A active, inferred mid-ocean ridge Chile Rise -39.0500 -91.5833 3450 1998 plume only
Chile Triple Junction active, inferred mid-ocean ridge Chile Rise -46.3000 -75.8000 3000 2010 plume only
Chile Triple Junction, 10 km north active, inferred mid-ocean ridge Chile Rise -46.2000 -75.8333 3000 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
CIR, northern active, inferred mid-ocean ridge CIR -14.7000 66.2500 3400 2010 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
Consag Basin active, inferred mid-ocean ridge Gulf of California 30.6333 -113.9083 140 2007 echosounder and grab samples
Dellwood Seamount inactive mid-ocean ridge Explorer Ridge 50.8579 -129.3515 800 NotProvided
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
Dodo Field active, confirmed mid-ocean ridge CIR -18.3470 65.3050 2730 2009 submersible Shinkai 6500; 2006 plume only
Don Joao de Castro Bank active, confirmed mid-ocean ridge Terceira Rift 38.2300 -26.6300 45 1995 SCUBA
DSDP Hole 504B inactive mid-ocean ridge Galapagos Rift 1.2267 -83.7300 3500 NotProvided
E Eye of Mordor inactive mid-ocean ridge Galapagos Rift 1.9058 -91.2310 1600 2005 towed video Medea found inactive chimneys
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
East Blanco Depression active, confirmed mid-ocean ridge JdF Ridge 44.2170 -129.6250 3460 1994 ROV U.S. Navy's Advanced Tethered Vehicle
Edmond Field active, confirmed mid-ocean ridge CIR -23.8780 69.5960 3320 2001 ROV Jason
EPR 87D1 Seamount inactive mid-ocean ridge N EPR 11.5333 -103.8600 2090 NotProvided
EPR, 1 S active, inferred mid-ocean ridge S EPR -0.8000 -102.4600 2800 2005 plume only
EPR, 1.4 S, off-axis active, confirmed mid-ocean ridge S EPR -1.3690 -102.4560 3000 2008 towed video
EPR, 10 02'N active, confirmed mid-ocean ridge N EPR 10.0330 -104.3300 2560 1992 submersible Alvin
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)
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)
EPR, 10 44.6'N active, confirmed mid-ocean ridge N EPR 10.7433 -103.6500 2580 1985 Argo video tow with temperature
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
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
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
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)
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)
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, 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, 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
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
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
EPR, 14 18'S active, inferred mid-ocean ridge S EPR -14.3000 -112.6670 2630 1993 plume only
EPR, 14 35'S active, inferred mid-ocean ridge S EPR -14.5830 -112.6670 2630 1993 plume only
EPR, 14 N seamount inactive mid-ocean ridge N EPR 14.1500 -104.3667 2600 NotProvided
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, 15 24'S active, inferred mid-ocean ridge S EPR -15.4000 -112.8350 2640 1993 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, 16 08'S active, inferred mid-ocean ridge S EPR -16.1300 -113.0000 2640 1993 plume only
EPR, 16 24'S active, inferred mid-ocean ridge S EPR -16.4000 -113.0500 2640 1993 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, 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, 17 12'S active, confirmed mid-ocean ridge S EPR -17.2000 -113.1500 2590 1993 submersible Nautile
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, 17 42'S active, inferred mid-ocean ridge S EPR -17.7000 -113.2500 2600 1993 plume only
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
EPR, 17 47'S active, inferred mid-ocean ridge S EPR -17.7900 -113.3000 2600 1993 plume only
EPR, 17 53'S active, inferred mid-ocean ridge S EPR -17.8800 -113.3000 2610 1993 plume only
EPR, 17 56'S active, inferred mid-ocean ridge S EPR -17.9400 -113.3170 2620 1993 plume only
EPR, 17 S active, inferred mid-ocean ridge S EPR -17.0000 -113.1170 2680 1993 plume only
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
EPR, 18 15'S active, confirmed mid-ocean ridge S EPR -18.2500 -113.3500 2680 1993 submersible Nautile
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)
EPR, 18 32'S active, confirmed mid-ocean ridge S EPR -18.5550 -113.4160 2647 1993 submersible Nautile
EPR, 2 S active, confirmed mid-ocean ridge S EPR -2.2200 -102.6550 2900 2008 towed video and AUV ABE
EPR, 2 S, off-axis active, inferred mid-ocean ridge S EPR -2.0840 -102.8270 3000 2008 plume only
EPR, 20 06'S active, confirmed mid-ocean ridge S EPR -20.1000 -113.7080 3000 1981 Angus camera tow; 1984 submersible Cyana
EPR, 20 S active, inferred mid-ocean ridge S EPR -20.0333 -113.6843 3000 1999 submersible Alvin did not confirm activity
EPR, 21 20'S active, inferred mid-ocean ridge S EPR -21.3670 -114.2570 2900 1981 plume only; 1987-1988 deposits only
EPR, 21 25'S active, confirmed mid-ocean ridge S EPR -21.4333 -114.2917 2850 1984 submersible Cyana; 1983 deposits only
EPR, 21 40'S active, inferred mid-ocean ridge S EPR -21.6340 -114.3010 2730 1987-1988 deposits only
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]
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, 22 30'S active, inferred mid-ocean ridge S EPR -22.5000 -114.3670 2600 1992 or earlier [need to check Dill et al. (1992) for confirmation]
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
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
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
EPR, 26.5 S active, confirmed mid-ocean ridge S EPR -26.4833 -112.6250 2064 1993 submersible Nautile (or earlier)
EPR, 27.7 S, Segment W3 active, inferred mid-ocean ridge S EPR -27.7000 -112.9170 2105 1998 plume only
EPR, 27.9 S, Segment W3 active, inferred mid-ocean ridge S EPR -27.8670 -112.9120 2180 1998 plume only
EPR, 28 S, Segment W3 active, inferred mid-ocean ridge S EPR -28.0170 -112.9040 2130 1998 plume only
EPR, 28.3 S, Segment W3 active, inferred mid-ocean ridge S EPR -28.3000 -112.9830 2220 1998 plume only
EPR, 28.4 S, Segment W4 active, inferred mid-ocean ridge S EPR -28.4170 -112.9640 2350 1998 plume only
EPR, 28.7 S, Segment W4 active, inferred mid-ocean ridge S EPR -28.7000 -112.9880 2350 1998 plume only
EPR, 29.5 S, Segment E1 active, inferred mid-ocean ridge S EPR -29.5000 -111.7200 2580 1998 plume only
EPR, 29.8 S, Segment E1 active, inferred mid-ocean ridge S EPR -29.8000 -111.7300 2580 1998 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)
EPR, 30.1 S, Segment E1 active, inferred mid-ocean ridge S EPR -30.1330 -111.7640 2480 1998 plume only
EPR, 30.4 S, Segment E2 active, inferred mid-ocean ridge S EPR -30.3750 -111.7640 2320 1998 plume only
EPR, 30.8 S, Segment E2 active, inferred mid-ocean ridge S EPR -30.7500 -111.8770 2360 1998 plume only
EPR, 31.4 S, Segment E4 active, inferred mid-ocean ridge S EPR -31.4330 -111.9670 2350 1998 plume only
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
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
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
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
EPR, 7 S active, inferred mid-ocean ridge S EPR -7.0000 -107.5500 2600 1992 or earlier (need to check reference to confirm)
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
EPR, 8 53'N active, inferred mid-ocean ridge N EPR 8.9000 -104.2000 2580 1991 plume only
EPR, 9 17'N active, confirmed mid-ocean ridge N EPR 9.2800 -104.2166 2585 1989 Argo I towed video
EPR, 9 30'N active, confirmed mid-ocean ridge N EPR 9.5167 -104.2414 2580 1989 Argo I towed video
EPR, 9 33'N active, confirmed mid-ocean ridge N EPR 9.5583 -104.2500 2574 1989 Argo I towed video; 1991 submersible Alvin
EPR, 9 40'N active, confirmed mid-ocean ridge N EPR 9.6500 -104.2600 2572 1989 Argo I towed video; 1991 submersible Alvin
EPR, 9 47'N active, confirmed mid-ocean ridge N EPR 9.7750 -104.2802 2560 1989 Argo I towed video; 1991 submersible Alvin
EPR, 9 50'N active, confirmed mid-ocean ridge N EPR 9.8300 -104.2900 2520 1989 Argo I towed video
EPR, Manzanillo Spreading Segment active, inferred mid-ocean ridge N EPR 18.2500 -106.3000 2600 1997 plume only
EPR, mid 17 N segment active, inferred mid-ocean ridge N EPR 17.0000 -105.3800 2750 1997 plume only
EPR, northern 17 N segment active, inferred mid-ocean ridge N EPR 17.6700 -105.0050 2800 1997 plume only
EPR, Ridge 1, 20 40'S propaging rift active, confirmed mid-ocean ridge S EPR -20.8333 -114.1667 3000 1983 Deep Tow camera
EPR, Ridge 3, 20 40'S propaging rift active, confirmed mid-ocean ridge S EPR -20.3333 -113.6792 3050 1983 Deep Tow camera
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)
EPR, southern 16 N segment active, inferred mid-ocean ridge N EPR 15.5000 -105.4000 2300 1997 plume only
EPR, southern 17 N segment active, inferred mid-ocean ridge N EPR 16.5800 -105.3000 2700 1997 plume only
EPR/Tamayo intersection active, inferred mid-ocean ridge N EPR 22.9333 -108.0667 3200 1979 submersible Alvin did not confirm activity
ET active, inferred mid-ocean ridge JdF Ridge 48.1993 -128.9257 2500 NotProvided
Europa active, confirmed mid-ocean ridge Mid-Cayman Rise 18.3500 -81.8500 2300 2010 ROTV HyBIS; 2009 plume only, not observed on dive with hybrid ROV Nereus
Evan active, confirmed mid-ocean ridge N MAR 37.2667 -32.2833 1775 2006 submersible Nautile
EX/FX Zone active, inferred mid-ocean ridge CIR -21.5000 68.4200 3000 1987 or earlier plume and deposits only
Explorer Deep inactive mid-ocean ridge Explorer Ridge 50.0833 -129.7500 3200 NotProvided
Eye of Mordor Seamount active, inferred mid-ocean ridge Galapagos Rift 1.9410 -91.3100 1555 2005 plume only
Eyjafjördur active, confirmed mid-ocean ridge Kolbeinsey Ridge 65.8500 -18.1333 65 1997, likely by SCUBA
Feather Duster active, confirmed mid-ocean ridge N EPR 10.9267 -103.6767 2520 1984 towed camera and submersible Alvin
Floc active, confirmed mid-ocean ridge JdF Ridge 46.3133 -129.7050 2290 1993 DEEPTOW and submersible Alvin
Flow active, confirmed mid-ocean ridge JdF Ridge 46.5250 -129.5783 2390 1993 ROV ROPOS
Gakkel Ridge, 7.5 E active, inferred mid-ocean ridge Gakkel Ridge 85.0167 7.4500 3600 2001 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
Gakkel Ridge, Site 2 active, inferred mid-ocean ridge Gakkel Ridge 83.8500 -2.0000 3900 2001 plume only
Gakkel Ridge, Site 3 active, inferred mid-ocean ridge Gakkel Ridge 84.4333 2.1333 4300 2001 plume only
Gakkel Ridge, Site 5 active, inferred mid-ocean ridge Gakkel Ridge 86.3500 37.0000 3600 2001 plume only
Gakkel Ridge, Site 6 active, inferred mid-ocean ridge Gakkel Ridge 86.5333 43.0000 3000 2001 plume only
Gakkel Ridge, Site 7 active, inferred mid-ocean ridge Gakkel Ridge 86.9833 55.5000 3800 2001 plume only
Gakkel Ridge, Site 8 active, inferred mid-ocean ridge Gakkel Ridge 86.5333 69.0000 3500 2001 plume only
Galapagos Mounds active, confirmed mid-ocean ridge Galapagos Rift 1.4500 -86.1665 2700 1977 submersible Alvin
Galapagos Rift, 85 50'W inactive mid-ocean ridge Galapagos Rift 0.7500 -85.8333 2600 1988 or earlier submersible observations
Galapagos Rift, 93.7 W active, inferred mid-ocean ridge Galapagos Rift 2.4970 -93.7700 2220 2005 plume only
Galapagos Rift, 94.4 W active, inferred mid-ocean ridge Galapagos Rift 2.5300 -94.3300 2400 2005 plume only
Galapagos Rift, 94.7 W active, inferred mid-ocean ridge Galapagos Rift 2.6000 -94.7750 2690 2005 plume only
Galapagos Rift, 95 W inactive mid-ocean ridge Galapagos Rift 2.5000 -95.1667 2600 NotProvided
Galapagos Rift, 95.5 W active, inferred mid-ocean ridge Galapagos Rift 2.6700 -95.4500 3200 1990 submersible Alvin did not confirm activity
Gorda Ridge, 41 30'N inactive mid-ocean ridge Gorda Ridge 41.5167 -127.4500 3350 1984 deposits 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
Gorda Ridge, EP96B active, inferred mid-ocean ridge Gorda Ridge 42.5500 -126.8333 3400 1984 deposits only; 1996 plume only
Gorda Ridge, GR-15 active, inferred mid-ocean ridge Gorda Ridge 42.9500 -126.5500 3365 1985 plume only
Green Seamount inactive mid-ocean ridge N EPR 20.8033 -109.2833 2000 1982 submersible Alvin observed only inactive
Grimsey Field active, confirmed mid-ocean ridge Kolbeinsey Ridge 66.6067 -17.6542 400 1997 submersible Jago
Guaymas Basin, Northern Trough inactive mid-ocean ridge Gulf of California 27.3050 -111.5067 2000 1977 submersible Seacliff (hydrothermal deposits only)
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
Hess Deep inactive mid-ocean ridge Galapagos Rift 2.2500 -101.5000 5100 NotProvided
High-Rise Field active, confirmed mid-ocean ridge JdF Ridge 47.9667 -129.0900 2200 1988 submersible Alvin
Iguanas-Pinguinos active, confirmed mid-ocean ridge Galapagos Rift 2.1000 -91.9350 1640 2005 towed video Medea
Jade Emperor Mountain inactive mid-ocean ridge SWIR -37.9400 49.2600 1500 2010 video sled, plume survey, and geological sampling all suggest inactive
Kairei Field active, confirmed mid-ocean ridge CIR -25.3195 70.0400 2460 2000 ROV Kaiko; 1993 plume only
Kebrit Deep active, inferred mid-ocean ridge Red Sea 24.7233 36.2767 1590 1972 deposits only
Knipovich Ridge, 75 N active, inferred mid-ocean ridge Knipovich Ridge 74.8000 8.4417 3185 2000 plume only
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
Knipovich Ridge, 77 40'N active, inferred mid-ocean ridge Knipovich Ridge 77.6300 7.5800 3000 2000 plume only
Kolbeinsey Field active, confirmed mid-ocean ridge Kolbeinsey Ridge 67.0833 -18.7167 110 1988 submersible GEO
Kolbeinsey Ridge, 69 N active, inferred mid-ocean ridge Kolbeinsey Ridge 68.7581 -16.0000 1200 1980 or earlier sediments only
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
Lilliput active, confirmed mid-ocean ridge S MAR -9.5500 -13.1800 1500 2005 ROV Quest
Logatchev 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
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
Logatchev 3 active, inferred mid-ocean ridge N MAR 14.7083 -44.9667 3100 1993-1999 (between these dates)
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]
Logatchev 5 inactive mid-ocean ridge N MAR 14.7500 -44.9700 3100 2007 ROV VICTOR 6000 did not find hydrothermal activity
Loki's Castle active, confirmed mid-ocean ridge Mohns Ridge 73.5500 8.1500 2400 2008 ROV Bathysaurus
Lost City active, confirmed mid-ocean ridge N MAR 30.1250 -42.1183 800 2000 towed video ARGO-II and submersible Alvin
Lucky B active, inferred mid-ocean ridge Lena Trough 81.3610 -3.4400 4000 1999 dredging only
Lucky Strike active, confirmed mid-ocean ridge N MAR 37.2933 -32.2733 1740 1993 submersible Alvin; 1992 dredge and plume only
Lucky Strike segment, southern end active, inferred mid-ocean ridge N MAR 37.0500 -32.4200 2600 1994 plume only
Magic Mountain active, confirmed mid-ocean ridge Explorer Ridge 49.7500 -130.2667 1850 1984 submersible Pisces IV
Magic Mountain, 3-km south active, inferred mid-ocean ridge Explorer Ridge 49.7250 -130.2667 1850 2002 AUV ABE plume only
Main Endeavour Field active, confirmed mid-ocean ridge JdF Ridge 47.9500 -129.1000 2220 1984 submersible Alvin; 1982 dredge only
MAR, 11 26'N active, inferred mid-ocean ridge N MAR 11.4482 -43.7035 3835 2009 plume only
MAR, 11 N active, inferred mid-ocean ridge N MAR 11.0380 -43.6483 4010 1984 plume only; 2009 plume only
MAR, 12 48'N inactive mid-ocean ridge N MAR 12.8000 -44.7883 2400 NotProvided
MAR, 13 19'N OCC active, inferred mid-ocean ridge N MAR 13.3333 -44.9000 3000 2007 dredge only
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
MAR, 15 50'N inactive mid-ocean ridge N MAR 15.8667 -46.6667 3000 NotProvided
MAR, 16 46'N inactive mid-ocean ridge N MAR 16.7950 -46.3800 3300 NotProvided
MAR, 22 30'N inactive mid-ocean ridge N MAR 22.5000 -45.0050 2800 NotProvided
MAR, 23 35'N inactive mid-ocean ridge N MAR 23.5833 -45.0000 3500 1980 submersible Alvin did not observe hydrothermal activity
MAR, 24 20'N inactive mid-ocean ridge N MAR 24.3500 -46.2000 3200 NotProvided
MAR, 24 30'N inactive mid-ocean ridge N MAR 24.5000 -46.1533 3900 1987 deposits only
MAR, 25 50'N inactive mid-ocean ridge N MAR 25.8083 -44.9833 3000 NotProvided
MAR, 27 N active, inferred mid-ocean ridge N MAR 27.0000 -44.5000 2900 1993 plume only
MAR, 30 N active, inferred mid-ocean ridge N MAR 30.0333 -42.5000 3400 1993 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)
MAR, 43 N active, inferred mid-ocean ridge N MAR 43.0000 -29.0000 3400 1986 or earlier plume only
MAR, 7 57'S active, inferred mid-ocean ridge S MAR -7.9500 -13.4420 2600 2001 plume only
MAR, 8 10'S active, inferred mid-ocean ridge S MAR -8.1670 -13.4670 2000 2001 plume only
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
Markov Deep active, inferred mid-ocean ridge N MAR 5.9100 -33.1800 3500 2001-2002 and 2003 dredge only
Medusa active, confirmed mid-ocean ridge N EPR 9.1404 -104.2065 2580 2007 ROV Jason II; 1991 plume only
Menez Gwen active, confirmed mid-ocean ridge N MAR 37.8417 -31.5250 865 1994 submersible Nautile
Menez Hom active, confirmed mid-ocean ridge N MAR 37.1500 -32.4333 1802 2002 ROV Victor 6000
MESO Zone inactive mid-ocean ridge CIR -23.3927 69.2422 2850 1993 TV grab and water column measurements
Middle Valley, Bent Hill Massive Sulfide inactive mid-ocean ridge JdF Ridge 48.4500 -128.6783 2400 1985 deposits only
Middle Valley, Dead Dog Vent Field active, confirmed mid-ocean ridge JdF Ridge 48.4567 -128.7083 2450 1992 or earlier towed video
Middle Valley, ODP Mound active, confirmed mid-ocean ridge JdF Ridge 48.4300 -128.6816 2440 1992 or earlier towed video
Mothra Field active, confirmed mid-ocean ridge JdF Ridge 47.9230 -129.1090 2270 1996 ROV ROPOS; 1986 plume only
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
Mount Jourdanne inactive mid-ocean ridge SWIR -27.8500 63.9333 2940 1998 submersible Shinkai 6500
Moytirra active, confirmed mid-ocean ridge N MAR 45.4833 -27.8500 3000 2011 ROV Holland 1; 2008 plume only MAPRs, ROV Isis buoyant plume, but no visual confirmation
N Oceanographer active, inferred mid-ocean ridge N MAR 35.2830 -34.8670 2600 1992 plume only
Navidad active, confirmed mid-ocean ridge Galapagos Rift 2.5300 -94.0750 2380 2005 towed video Medea
near Jade Emperor Mountain, on-axis active, inferred mid-ocean ridge SWIR -37.8666 49.2166 3000 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
Nereus Deep active, inferred mid-ocean ridge Red Sea 23.1670 37.2830 2400 1972 deposits only
NESCA active, confirmed mid-ocean ridge Gorda Ridge 41.0000 -127.4917 3300 1988 submersible Alvin; 1986 dredge and photographs did not confirm activity
Nibelungen active, confirmed mid-ocean ridge S MAR -8.3000 -13.5200 2900 2006 AUV ABE followed by ROV Quest; 2004 plume only
Nolan's Nook active, confirmed mid-ocean ridge S EPR -31.1500 -111.9167 2330 1999 submersible Alvin; 1998 plume only
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
North Cleft, low temperature active, confirmed mid-ocean ridge JdF Ridge 44.8833 -130.2667 2250 1987-1989 camera/CTD tows
North FAMOUS active, inferred mid-ocean ridge N MAR 36.9670 -32.9670 2500 1994 plume only
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
Owen transform fault inactive mid-ocean ridge Carlsberg Ridge 9.8333 57.9500 4500 NotProvided
Pacific-Antarctic Ridge, 60 S segment active, inferred mid-ocean ridge Pacific-Antarctic Ridge -60.0000 -152.0000 2300 2009 plume only
Pacific-Antarctic Ridge, 64 S segment active, inferred mid-ocean ridge Pacific-Antarctic Ridge -64.5000 -170.0000 2300 2009 plume only
Pito Seamount active, confirmed mid-ocean ridge S EPR -23.3275 -111.6402 2270 1993 submersible Nautile
Puy des Folles active, inferred mid-ocean ridge N MAR 20.5083 -45.6417 2000 1996 submersible Nautile observed only inactive vents
Rainbow active, confirmed mid-ocean ridge N MAR 36.2300 -33.9020 2320 1997 submersible Nautile
Rainbow Bay active, inferred mid-ocean ridge S MAR -14.0300 -14.3400 2900 2009 towed video did not confirm activity
Rapa Nui active, confirmed mid-ocean ridge S EPR -21.5620 -114.3000 2845 1999 submersible Alvin; 1987-1988 deposits only
Raven active, confirmed mid-ocean ridge JdF Ridge 47.9583 -129.0833 2180 2000 ROV Jason
Red Sea Rift, 18 N active, inferred mid-ocean ridge Red Sea 17.9667 40.0667 1500 1980 submersible Pisces XI (deposits only)
Red Seamount active, confirmed mid-ocean ridge N EPR 20.8033 -109.3783 2000 1982 submersible Alvin
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
Reykjanes Ridge, Area A active, inferred mid-ocean ridge N MAR, Reykjanes Ridge 62.4500 -25.4330 500 NotProvided
Reykjanes Ridge, Area B active, inferred mid-ocean ridge N MAR, Reykjanes Ridge 59.8167 -29.6833 1000 1992 submersible Mir did not find vents
Romanche Fracture Zone inactive mid-ocean ridge S MAR -0.9767 -24.5133 3100 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)
S AMAR 1 active, inferred mid-ocean ridge N MAR 36.0830 -34.0830 2630 1992 plume only; 1994 plume only
S AMAR 2 active, inferred mid-ocean ridge N MAR 35.9670 -34.1830 2240 1992 plume only; 1994 plume only
S Oceanographer active, inferred mid-ocean ridge N MAR 34.8670 -36.4330 3460 1992 plume only
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
S-OH2 active, inferred mid-ocean ridge N MAR 34.0670 -37.4830 3250 2000 or earlier plume only
Saguaro Field active, confirmed mid-ocean ridge S EPR -31.8500 -112.0333 2330 1999 submersible Alvin; 1998 plume only
Saldanha active, confirmed mid-ocean ridge N MAR 36.5667 -33.4333 2300 1998 submersible Nautile
Salty Dawg Field active, confirmed mid-ocean ridge JdF Ridge 47.9820 -129.0760 2200 1995 submersible Alvin, followed by ROV ROPOS
Sasquatch Field active, confirmed mid-ocean ridge JdF Ridge 47.9970 -129.0660 2200 2000 submersible Alvin
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
SEIR inactive mid-ocean ridge SEIR -28.0614 74.1733 5000 NotProvided
SEIR, 01 active, inferred mid-ocean ridge SEIR -42.1130 88.0420 2400 1996 plume only
SEIR, 08A active, inferred mid-ocean ridge SEIR -42.4770 82.7100 2500 1996 plume only
SEIR, 10 active, inferred mid-ocean ridge SEIR -41.8020 81.8380 2540 1996 plume only
SEIR, 13 active, inferred mid-ocean ridge SEIR -41.2420 81.1580 2860 1996 plume only
SEIR, 16 active, inferred mid-ocean ridge SEIR -41.7720 79.7530 2800 1996 plume only
SEIR, 21 active, inferred mid-ocean ridge SEIR -41.2520 79.1030 2800 1996 plume and dredge only
SEIR, 41, near St. Paul Island active, inferred mid-ocean ridge SEIR -39.4400 78.0920 2270 1996 plume only
Semyenov active, confirmed mid-ocean ridge N MAR 13.5137 -44.9630 2440 2009 TV grab and photo-TV profiling; 2007 deposits only
SESCA active, inferred mid-ocean ridge Gorda Ridge 40.7500 -127.5200 3300 1986 sediments and heat-flow measurements
Shaban Deep active, inferred mid-ocean ridge Red Sea 26.2250 35.3500 1540 1983 deposits only
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
Solitaire Field active, confirmed mid-ocean ridge CIR -19.5450 65.8500 2630 2009 submersible Shinkai 6500; 2006 plume only
Soria Moria active, confirmed mid-ocean ridge Mohns Ridge 71.2500 -5.8000 700 2005 ROV BIODEEP-05 cruise
Source active, confirmed mid-ocean ridge JdF Ridge 46.1550 -129.8100 2055 1993 submersible Alvin
South Cleft active, confirmed mid-ocean ridge JdF Ridge 44.6667 -130.3667 2250 1981 deep-tow photographs; 1984 submersible Alvin
South Kurchatov active, inferred mid-ocean ridge N MAR 40.4670 -29.5500 2900 1992 plume only; 1995 plume only
Split Seamount active, inferred mid-ocean ridge JdF Ridge 47.6400 -128.9667 2350 1990 camera tow (need reference to check if activity confirmed)
Squid Forest inactive mid-ocean ridge Kolbeinsey Ridge 68.0000 -17.5000 900 1999 ROV Aglantha
St. Petersburg active, inferred mid-ocean ridge N MAR 19.8666 -45.8666 3400 2010 dredging 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
Steinaholl Vent Field active, confirmed mid-ocean ridge N MAR, Reykjanes Ridge 63.1000 -24.5333 350 1990 plume, echosounding, and towed video; 1993 plume only (included echosounding for more precise location)
Suakin Deep active, inferred mid-ocean ridge Red Sea 19.6333 38.7333 2850 1972 deposits only
SWIR Area A active, confirmed mid-ocean ridge SWIR -37.7833 49.6500 2785 2007 towed video sled followed by AUV ABE; 2005 plume only
SWIR, 51.7 E active, inferred mid-ocean ridge SWIR -37.4660 51.7320 1595 2008 plume and dredge only
SWIR, 53.2 E active, inferred mid-ocean ridge SWIR -36.1010 53.2550 2218 2008 plume and dredge only
SWIR, 63.5 E active, inferred mid-ocean ridge SWIR -27.9507 63.5414 3666 2009 DY115-20 Leg 7 (need reference to confirm activity)
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)
SWIR, D20 active, inferred mid-ocean ridge SWIR -53.0200 22.1880 4170 2000-2001 plume and dredge only
SWIR, D36 active, inferred mid-ocean ridge SWIR -52.7490 11.7110 3981 2000-2001 plume and dredge only
SWIR, D50B active, inferred mid-ocean ridge SWIR -52.4200 12.7480 3913 2000-2001 plume and dredge only
SWIR, D54 active, inferred mid-ocean ridge SWIR -52.4370 13.3120 4029 2000-2001 plume and dredge only
SWIR, D57 active, inferred mid-ocean ridge SWIR -52.2240 13.7380 3517 2000-2001 plume and dredge only
SWIR, D62 active, inferred mid-ocean ridge SWIR -52.2530 15.1030 3990 2000-2001 plume and dredge only
SWIR, D82 active, inferred mid-ocean ridge SWIR -52.2080 15.5830 4100 2000-2001 plume only
SWIR, D9B active, inferred mid-ocean ridge SWIR -52.7070 18.8170 3931 2000-2001 plume and dredge only
SWIR, Plume 1, Segment 17 active, inferred mid-ocean ridge SWIR -31.1830 58.5000 3600 1997 plume only
SWIR, Plume 2, Segment 16 active, inferred mid-ocean ridge SWIR -31.0670 58.9670 4200 1997 plume only
SWIR, Plume 3, Segment 16 active, inferred mid-ocean ridge SWIR -30.8500 59.3830 3900 1997 plume only
SWIR, Plume 4 active, inferred mid-ocean ridge SWIR -27.9670 63.5500 3400 1997 plume only
SWIR, Plume 5 active, inferred mid-ocean ridge SWIR -27.9170 64.4500 4000 1997 plume only
SWIR, Plume 6 active, inferred mid-ocean ridge SWIR -27.7670 65.1330 3200 1997 plume only
SWIR, unnamed, Segment 26 active, inferred mid-ocean ridge SWIR -37.6080 50.8527 2800 2008 dredge only DY115-20 Leg 6
SWIR, unnamed, Segment 27 inactive mid-ocean ridge SWIR -37.6579 50.4671 1739 2008 video and TV-grab DY115-20 Leg 5
TAG active, confirmed mid-ocean ridge N MAR 26.1367 -44.8267 3670 1985 towed camera and temperature anomaly; 1986 submersible Alvin
Tai Chi active, inferred mid-ocean ridge S MAR -13.5900 -14.5200 3500 2011 plume only
Teotihuacan active, confirmed mid-ocean ridge N EPR 15.7333 -105.4333 2300 2010 submersible Nautile; 1997 plume only
Tevnia active, inferred mid-ocean ridge N EPR 10.3333 -103.5533 2925 1994 submersible Alvin did not confirm activity
Troll Wall active, confirmed mid-ocean ridge Mohns Ridge 71.2833 -5.7667 550 2005 ROV BIODEEP-05 cruise
Vema Fracture Zone inactive mid-ocean ridge N MAR 10.8500 -41.8000 3600 NotProvided
Vityaz megamullion active, inferred mid-ocean ridge CIR -5.4000 68.5833 3500 1979 plume and deposits only
Von Damm active, confirmed mid-ocean ridge Mid-Cayman Rise 18.2261 -81.4788 2300 April 2010 (Autosub6000 AUV and HyBIS TVG; November 2009 (plume only)
W Eye of Mordor inactive mid-ocean ridge Galapagos Rift 1.9707 -91.3900 1600 2005 towed video Medea observed inactive chimneys
W Los Huellos Caldera active, inferred mid-ocean ridge Galapagos Rift 1.0000 -90.6000 1600 2005 plume only
Wagner Basin active, inferred mid-ocean ridge Gulf of California 31.0666 -114.0833 120 2007 echosounder and grab samples
Walsh active, inferred mid-ocean ridge Mid-Cayman Rise 17.9333 -81.7833 4000 2009 plume only
West Valley Segment active, inferred mid-ocean ridge JdF Ridge 48.4833 -129.0417 3000 1992 or earlier deposits only
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)
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