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Name Alias(es): 
Guaymas Basin, Northern Trough off-axis
MGDS_FeatureID lowest in hierarchy: 
Vent Sites: 
unnamed from Lizarralde et al. (2011)
Maximum Temperature: 
Location on map: 
National Jurisdiction: 
Maximum or Single Reported Depth (mbsl): 
Tectonic setting: 
Full Spreading Rate (mm/a): 
Volcano Number (if applicable): 
Host Rock: 
Deposit Type: 
Notes on Vent Field Description: 
The position and temperature given in the ver. 3.4 database are for the confirmed Ringvent site from Soule et al. (2018); depth from Alvin Dive 4864 to "Off Axis Ring Vent Area" in 2016; the previous ver. 3.3 database gave a position 27.5600, -111.5500 estimated for the unnamed site from Lizarralde et al. (2011); Lizarralde et al. (2011): "Seafloor photographs from these sites reveal that the high-backscatter features are associated with seafloor biological communities similar to those found at warm-seep areas"; "Temperature anomalies, high methane concentrations and 3He enrichements at the surveyed sites are all consistent with thermogenic methane production driven by heat from magmatic intrusions"; note that unnamed site from Lizarralde et al. (2011) may ultimately be determined to be a hydrothermal seep or cold seep; note that these locations are distinct from Pinkie's Vent, a gas vent at 1582 m depth which is more likely a cold seep at 27 35.5'N, 111 28.5'W on an "eroded transform-parallel fault scarp" (Paull et al. 2007) and ‘Vasconcelos’ site (27 35.5770'N; 111 28.9840'W) cold seep reported by Vigneron et al. (2013)
Year and How Discovered (if active, visual confirmation is listed first): 
2016 submersible Alvin; 2009 towed camera/CTD/bottles
Discovery References (text): 
Lizarralde, D., et al. (2011) Carbon release by off-axis magmatism in a young sedimented spreading centre. Nature Geoscience, 4, 50-54, doi:10.1038/ngeo1006;
Alvin Dive 4864, web log available at accessed 25 April 2018;
Other References (text): 
Paull et al. (2007) Authigenic carbon entombed in methane-soaked sediments from the northeastern transform margin of the Guaymas Basin, Gulf of California. Deep-Sea Research II, 54,1240-1267;
Vigneron et al. (2013) Archaeal and anaerobic methane oxidizer communities in the Sonora Margin cold seeps, Guaymas Basin (Gulf of California). The ISME Journal 7, 1595-1608, doi:10.1038/ismej.2013.18;
Soule, A. et al. (2018) Exploration of the Northern Guaymas Basin. Oceanography 31 (1, supplement): 39-41,;