United States : Northern Mariana Islands and Guam

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.
You can sort the list below by clicking on a column header.

Vent Field Name ID	Activity	Tectonic Setting	Region	Latitude	Longitude	Maximum or Single Reported Depth	Year and How Discovered
TOTO Caldera	active, confirmed	arc volcano	Mariana Arc	12.7167	143.5333	2960	2000 deep-tow camera (later, same year - ROV Kaiko); 1998 or earlier hydrothermal deposits dredged; 1998 plume only
Mariana Trough, plume 2	active, inferred	back-arc spreading center	Mariana Trough	12.7610	143.4730	2950	2003 plume only
Pika	active, confirmed	back-arc spreading center	Mariana Trough	12.9183	143.6483	2990	2003 submersible Shinkai 6500; 2003 plume only
Snail	active, confirmed	back-arc spreading center	Mariana Trough	12.9533	143.6200	2880	2003 ROV Jason II; 2003 plume only
13 N Ridge Site	active, confirmed	back-arc spreading center	Mariana Trough	13.0987	143.6886	3036	2000 deep-tow camera (later, same year - ROV Kaiko)
Seamount X	active, confirmed	arc volcano	Mariana Arc	13.2500	144.0200	1450	1994 or earlier submersible Shinkai 6500
Forecast	active, confirmed	arc volcano	Mariana Arc	13.4000	143.9166	1470	1992 submersible Shinkai 6500
West Rota volcano	active, confirmed	arc volcano	Mariana Arc	14.3250	144.8330	1150	2005 ROV Hyper-Dolphin; 2003 plume only; 2004 ROV ROPOS did not observe venting
Mariana Trough, 14.5 N	active, inferred	back-arc spreading center	Mariana Trough	14.4870	144.0940	4120	2015 plume only
Northwest Rota-1 volcano	active, confirmed	arc volcano	Mariana Arc	14.6010	144.7750	599	2004 ROV ROPOS; 2003 plume only
Esmeralda Bank	active, confirmed	arc volcano	Mariana Arc	14.9667	145.2500	323	1990 towed video and TV-grab; 1978 hydrothermal deposits only
Mariana Trough, 15.5 N	active, confirmed	back-arc spreading center	Mariana Trough	15.4080	144.5090	4196	2015 plume only, 2016 ROV did not confirm
Perseverance	active, confirmed	back-arc spreading center	Mariana Trough	15.4802	144.5077	3935	2016 ROV SuBastian; 2015 AUV Sentry plume mapping
Ruby	active, confirmed	arc volcano	Mariana Arc	15.6200	145.5700	214	2006 ROV Jason II; 2003 plume only
East Diamante volcano	active, confirmed	arc volcano	Mariana Arc	15.9300	145.6700	457	2004 ROV ROPOS; 2003 plume only
NE Anatahan submarine volcano	active, inferred	arc volcano	Mariana Arc	16.3750	145.7250	460	2003 multibeam and sidescan sonar only
Mariana Trough, 16.5 N	active, inferred	back-arc spreading center	Mariana Trough	16.4010	144.8700	3829	2015 plume only
South Sarigan Seamount	active, inferred	arc volcano	Mariana Arc	16.5800	145.7800	240	2013 ROV HyperDolphin (did not confirm activity)
Zealandia	active, inferred	arc volcano	Mariana Arc	16.8800	145.8500	144	2003 plume only; 2009 or earlier ROV did not confirm activity
Hafa Adai	active, confirmed	back-arc spreading center	Mariana Trough	16.9570	144.8680	3294	2016 ROV Deep Discoverer; 2015 AUV Sentry plume mapping
Mariana Mounds	active, confirmed	back-arc spreading center	Mariana Trough	18.0333	144.2833	3600	1987 submersible Alvin
Mariana Trough, Central Trough	active, confirmed	back-arc spreading center	Mariana Trough	18.0467	144.7533	3676	1987 submersible Alvin
Mariana Trough, 18.2 N	active, inferred	back-arc spreading center	Mariana Trough	18.1080	144.7380	3916	2015 plume only
Alice Springs Field	active, confirmed	back-arc spreading center	Mariana Trough	18.2103	144.7073	3640	1987 submersible Alvin; 1982 plume only
Maug Caldera	active, confirmed	arc volcano	Mariana Arc	20.0200	145.2200	145	2003 SCUBA shallow vents; 2004 ROV ROPOS deeper vents; 2003 plume only deeper vents
Ahyi	active, inferred	arc volcano	Mariana Arc	20.4200	145.0300	60	2003 plume only
Makhahnas	active, inferred	arc volcano	Mariana Arc	20.5300	144.8833	420	2003 no plume detected
Chamorro volcano	active, confirmed	arc volcano	Mariana Arc	20.8100	144.7050	896	2016 ROV Deep Discoverer; 2003 plume only
Daikoku volcano	active, confirmed	arc volcano	Mariana Arc	21.3240	144.1940	450	2004 ROV ROPOS; 2003 plume only
Kasuga 3 Seamount	active, confirmed	arc volcano	Mariana Arc	21.3833	143.6000	1140	1987 submersible Alvin
Northwest Eifuku	active, confirmed	arc volcano	Mariana Arc	21.4850	144.0430	1604	2004 ROV ROPOS; 2003 plume only
Kasuga 2 Seamount	active, confirmed	arc volcano	Mariana Arc	21.6000	143.6167	500	1987 submersible Alvin
Kasuga 1 Seamount	inactive	arc volcano	Mariana Arc	21.7650	143.7100	600	2003 no plume detected
Fukujin volcano	active, inferred	arc volcano	Mariana Arc	21.9300	143.4700	1100	1987 deposits only

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