FRSC, South Central |
active, inferred |
back-arc spreading center |
Lau Basin |
-16.6667 |
-174.5167 |
1820 |
2004 plume only; 2006 plume and chimney samples; 2009 camera tow and sampling (activity not confirmed) |
Yokosuka |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
25.2638 |
124.3733 |
2190 |
2016 ROV Kaiko; 2014 plume only |
MTJ, PAPATUA |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.3850 |
-174.6430 |
2170 |
1986 PAPATUA Expedition deposits only; 2008 plume only |
MTJ, T08C03 and T08C04 |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.6100 |
-174.8200 |
2300 |
2008 plume only |
VFR, plume 12 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.7300 |
-176.4530 |
1910 |
2004 plume only |
MTJ, V12A-04 |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.9540 |
-174.7110 |
1330 |
2012 plume only |
Solwara 11 |
active, confirmed |
back-arc spreading center |
Manus Basin |
-3.1667 |
147.1917 |
1500 |
2008 commercial ROV; 2000 submersible Nautile did not confirm activity |
Niuatahi |
active, confirmed |
back-arc spreading center |
Lau Basin |
-15.3790 |
-174.0196 |
1635 |
2009 ROV Jason II; 2003 plume only; 2004 dredging (SS11/2004 cruise); 2005 plume only; 2008 commercial ROV (report does not confirm activity) |
C-ELSC, plume 15 |
active, inferred |
back-arc spreading center |
Lau Basin |
-21.2700 |
-176.3470 |
2230 |
2004 plume only |
Mariner |
active, confirmed |
back-arc spreading center |
Lau Basin |
-22.1800 |
-176.6017 |
1910 |
2003 plume and camera tow; 2004 submersible Shinkai 6500 |
Deception Island |
active, confirmed |
back-arc spreading center |
Bransfield Strait |
-62.9500 |
-60.6500 |
100 |
1995 or earlier intertidal |
Woodlark Basin, Segment 3B |
active, inferred |
back-arc spreading center |
Woodlark Basin |
-9.8000 |
155.0667 |
3300 |
2009 plume only |
Calypso Vents |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.6800 |
177.1170 |
200 |
1989 submersible Soucoup |
Temakons |
active, confirmed |
back-arc spreading center |
New Hebrides back-arc |
-17.5667 |
169.1000 |
1400 |
1994 towed camera with temperature |
Extensional Relay Zone A |
active, inferred |
back-arc spreading center |
North Fiji Basin |
-16.1667 |
177.4167 |
2335 |
1999 towed camera did not confirm activity |
ESR, E5 |
active, inferred |
back-arc spreading center |
East Scotia Ridge |
-57.5000 |
-30.2000 |
3000 |
1999 plume only |
Tow Cam |
active, confirmed |
back-arc spreading center |
Lau Basin |
-20.3169 |
-176.1367 |
2700 |
2004 AUV ABE; 2004 plume only on previous cruise |
Higashi-Ensei |
active, confirmed |
back-arc spreading center |
Okinawa Trough |
28.4393 |
128.1724 |
1220 |
2016 ROV Kaiko dives 723 and 724 |
MTJ, T08C03, 15.72 S |
active, inferred |
back-arc spreading center |
Lau Basin |
-15.7186 |
-174.8338 |
2400 |
2008 plume only |
Hook Ridge |
active, confirmed |
back-arc spreading center |
Bransfield Strait |
-62.1940 |
-57.2745 |
1080 |
1997 hot sediment; 1995 plume only; 1999 even hotter sediment |
VFR, plume 3 |
active, inferred |
back-arc spreading center |
Lau Basin |
-22.4000 |
-176.6790 |
1980 |
2004 plume only |
Solwara 12 |
inactive |
back-arc spreading center |
Manus Basin |
-3.7086 |
151.8834 |
1920 |
2009 commercial ROV Fugro FV300 inactive |
Mariana Trough, 14.5 N |
active, inferred |
back-arc spreading center |
Mariana Trough |
14.4870 |
144.0940 |
4120 |
2015 plume only |
Parece Vela Ridge, Philippine Sea |
inactive |
back-arc spreading center |
Parece Vela Basin |
16.0000 |
139.1667 |
5000 |
NotProvided |
White Island |
active, confirmed |
back-arc spreading center |
Taupo Volcanic Zone |
-37.5191 |
177.1953 |
30 |
1989 or earlier, likely SCUBA |
C-ELSC, plume 17 |
active, inferred |
back-arc spreading center |
Lau Basin |
-20.9900 |
-176.2530 |
2270 |
2004 plume only |
Woodlark Basin, Segment 5B |
active, inferred |
back-arc spreading center |
Woodlark Basin |
-9.2540 |
156.1910 |
3550 |
1986 plume only; 2000 plume only |
ESR, E9 |
active, confirmed |
back-arc spreading center |
East Scotia Ridge |
-60.0500 |
-29.9300 |
2402 |
2009 towed video; 1999 plume only; 2010 ROV Isis |
Tripartite Ridge, south of TR1 |
inactive |
back-arc spreading center |
North Fiji Basin |
-14.5000 |
177.0000 |
3000 |
NotProvided |
Central Andaman Trough, rift valley, dredges 9 and 10 |
active, inferred |
back-arc spreading center |
Andaman Basin |
10.4166 |
94.1666 |
3350 |
1994 deposits only |