Misiteli |
active, confirmed |
back-arc spreading center |
Lau Basin |
-22.4700 |
-176.7030 |
2050 |
2008 commercial ROV; 2003 plume only |
CLSC, A3 |
active, confirmed |
back-arc spreading center |
Lau Basin |
-18.6000 |
-176.4500 |
2500 |
1990 submersible Mir |
Mariana Trough, 16.5 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
16.4010 |
144.8700 |
3829 |
2015 plume only |
Snail |
active, confirmed |
back-arc spreading center |
Mariana Trough |
12.9533 |
143.6200 |
2880 |
2003 ROV Jason II; 2003 plume only |
Solwara 17 |
active, confirmed |
back-arc spreading center |
Manus Basin |
-3.0380 |
147.5280 |
535 |
2009 commercial ROV Fugro FV300; 2008 plumes with some sites subsequently observed with ROV |
Central Andaman Trough, seamount crater, dredge 6 |
active, inferred |
back-arc spreading center |
Andaman Basin |
10.0000 |
94.0000 |
1640 |
1994 deposits only |
SPOT, Yonaguni Knoll IV |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
24.8490 |
122.7000 |
1385 |
2000 submersibles Shinkai 2000 and Shinkai 6500 |
VFR, ELSC7 |
active, inferred |
back-arc spreading center |
Lau Basin |
-22.8833 |
-176.7500 |
2050 |
2009 plume and dredge only |
Okinawa Trough, Site ES2 |
active, inferred |
back-arc spreading center |
Okinawa Trough |
28.8137 |
128.1028 |
779 |
1992 dredge only |
central Manus Basin, Bismarck Sea |
inactive |
back-arc spreading center |
Manus Basin |
-3.4199 |
150.1681 |
2500 |
NotProvided |
Whale Island |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.8600 |
176.9800 |
42 |
1990 or earlier, likely by SCUBA |
Deception Island |
active, confirmed |
back-arc spreading center |
Bransfield Strait |
-62.9500 |
-60.6500 |
100 |
1995 or earlier intertidal |
Higa |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
26.5550 |
126.2233 |
1485 |
2015 ROV Kaiko |
C-ELSC, plume 13 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.4150 |
-176.3720 |
2100 |
2004 plume only |
Philippine Ridge, West Philippine Basin |
inactive |
back-arc spreading center |
West Philippine Basin |
12.0000 |
131.4170 |
5800 |
NotProvided |
Alice Springs Field |
active, confirmed |
back-arc spreading center |
Mariana Trough |
18.2103 |
144.7073 |
3640 |
1987 submersible Alvin; 1982 plume only |
CLSC, CL_7 |
active, inferred |
back-arc spreading center |
Lau Basin |
-18.1333 |
-176.3667 |
2250 |
2009 plume only |
Mariana Trough, 18.2 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
18.1080 |
144.7380 |
3916 |
2015 plume only |
TELVE |
active, confirmed |
back-arc spreading center |
Lau Basin |
-22.1667 |
-176.6040 |
1760 |
2008 commercial ROV; 2003 plume only |
94SO2 |
active, inferred |
back-arc spreading center |
New Hebrides back-arc |
-19.4000 |
169.9000 |
980 |
1994 towed camera with temperature did not confirm activity |
Little Volcano |
active, inferred |
back-arc spreading center |
Bransfield Strait |
-62.7500 |
-59.2500 |
1500 |
1995 plume only |
NELSC, T08C12 |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.2179 |
-174.1788 |
2000 |
2008 plume only |
Solwara 18 |
active, inferred |
back-arc spreading center |
Manus Basin |
-3.0760 |
147.2390 |
1308 |
2008 plumes with some sites subsequently observed with ROV; 2009 commercial ROV Fugro FV300 (activity not confirmed) |
Yoron Hole |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
27.4916 |
127.5333 |
590 |
2010 ROV Hyperdolphin |
C-ELSC, plume 14 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.3200 |
-176.3640 |
2100 |
2004 plume only |
Mariana Mounds |
active, confirmed |
back-arc spreading center |
Mariana Trough |
18.0333 |
144.2833 |
3600 |
1987 submersible Alvin |
VFR, plume 12 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.7300 |
-176.4530 |
1910 |
2004 plume only |
Central Spreading Ridge, Station 19 S |
active, inferred |
back-arc spreading center |
North Fiji Basin |
-19.0000 |
173.5000 |
3000 |
1991 submersible Shinkai 6500 did not confirm activity |
White Church |
active, confirmed |
back-arc spreading center |
Lau Basin |
-21.9612 |
-176.5234 |
1960 |
1989 submersible Nautile; 2004 plume survey |
Tangyin |
active, inferred |
back-arc spreading center |
Okinawa Trough |
25.0667 |
122.5667 |
1206 |
2014 likely by dredging or ROV during the HOBAB3 cruise on R/V Kexue |