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Guaymas Basin, Northern Trough off-axis

MGDS_FeatureID lowest in hierarchy: 
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: 
position estimated from Figs. 3a and 3b and depth estimated from Fig. 2c at distance 27 km off-axis in 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 this database entry may ultimately be determined to be a hydrothermal seep or cold seep; note that this location is 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°35.5770N; 111°28.9840W) cold seep reported by Vigneron et al. (2013)
Year and How Discovered (if active, visual confirmation is listed first): 
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.
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