VFR, ELSC7 |
active, inferred |
back-arc spreading center |
Lau Basin |
-22.8833 |
-176.7500 |
2050 |
2009 plume and dredge only |
MAR, segment south of St. Paul system |
active, inferred |
mid-ocean ridge |
N MAR |
0.5000 |
-25.0000 |
3500 |
2013 plume only |
EPR, 30.8 S, Segment E2 |
active, inferred |
mid-ocean ridge |
S EPR |
-30.7500 |
-111.8770 |
2360 |
1998 plume 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 |
Reykjanes Ridge, Area A |
active, inferred |
mid-ocean ridge |
Reykjanes Ridge |
62.4500 |
-25.4330 |
500 |
NotProvided |
N-ELSC, plume 22 |
active, inferred |
back-arc spreading center |
Lau Basin |
-20.4000 |
-176.1580 |
2700 |
2004 plume only |
Sumisu Rift |
active, inferred |
back-arc spreading center |
Izu-Bonin back-arc |
31.1000 |
139.8917 |
1600 |
1987 submersible Alvin inactive chimneys only |
Kana Keoki seamount |
active, inferred |
arc volcano |
Solomons Arc |
-8.7500 |
157.0300 |
650 |
1993 observations did not confirm activity |
GEISEIR site 7, segment K3 |
active, inferred |
mid-ocean ridge |
SEIR |
-41.8020 |
81.8380 |
2540 |
1996 plume only; 2010 plume only |
GEISEIR site 17, segment L3 |
active, inferred |
mid-ocean ridge |
SEIR |
-41.6498 |
87.3481 |
2500 |
2010 plume only |
Mariana Trough, 18.2 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
18.1080 |
144.7380 |
3916 |
2015 plume only |
Bayonnaise Knoll caldera |
active, inferred |
back-arc spreading center |
Izu-Bonin back-arc |
31.9667 |
139.7333 |
900 |
2003 temperature anomalies, but camera survey observed inactive vent deposits |
SWIR, unnamed, Segment 26 |
active, inferred |
mid-ocean ridge |
SWIR |
-37.6080 |
50.8527 |
2800 |
2008 dredge only DY115-20 Leg 6 |
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, 14 18'S |
active, inferred |
mid-ocean ridge |
S EPR |
-14.3000 |
-112.6670 |
2630 |
1993 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 |
SWIR, D57 |
active, inferred |
mid-ocean ridge |
SWIR |
-52.2240 |
13.7380 |
3517 |
2000-2001 plume and dredge only |
N-ELSC, plume 25 |
active, inferred |
back-arc spreading center |
Lau Basin |
-19.8900 |
-176.0640 |
2680 |
2004 plume only |
Central Andaman Trough, seamount crater, dredge 6 |
active, inferred |
back-arc spreading center |
Andaman Basin |
10.0000 |
94.0000 |
1640 |
1994 deposits only |
NWLSC, Central Caldera |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.8000 |
-177.2666 |
2200 |
2008 plume and dredge only |
GEISEIR site 28, segment M6 |
active, inferred |
mid-ocean ridge |
SEIR |
-44.7237 |
94.6039 |
2700 |
2009 plume only |
FRSC, Central |
active, inferred |
back-arc spreading center |
Lau Basin |
-16.4917 |
-174.5417 |
2419 |
2004 plume only |
Komba-ridge |
active, inferred |
arc volcano |
Banda/Sunda Arc |
-7.9800 |
123.8000 |
1000 |
2001 CTD temperature anomaly and dredged sulfides |
C-ELSC, plume 18 |
active, inferred |
back-arc spreading center |
Lau Basin |
-20.9500 |
-176.2390 |
2230 |
2004 plume only |
Tevnia |
active, inferred |
mid-ocean ridge |
N EPR |
10.3333 |
-103.5533 |
2925 |
1994 submersible Alvin did not confirm activity |
Magic Mountain, 3-km south |
active, inferred |
mid-ocean ridge |
Explorer Ridge |
49.7250 |
-130.2667 |
1850 |
2002 AUV ABE plume only |
Station 58, N160 Axis |
active, inferred |
back-arc spreading center |
North Fiji Basin |
-16.3167 |
173.5500 |
3900 |
1985 plume only; 1991 temperature anomalies but submersible Shinkai 6500 did not confirm activity |
EPR, 27.9 S, Segment W3 |
active, inferred |
mid-ocean ridge |
S EPR |
-27.8670 |
-112.9120 |
2180 |
1998 plume only |
Nereus Deep |
active, inferred |
mid-ocean ridge |
Red Sea |
23.1670 |
37.2830 |
2400 |
1972 deposits only |
NELSC, T08C12 |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.2179 |
-174.1788 |
2000 |
2008 plume only |