Notes on Vent Field Description:
The low TDM/CH4 ratio contrasted with the higher TDM/CH4 ratios found in plumes emitted by high- temperature venting ... and was interpreted as an indicator of ongoing hydrothermal venting associated with seafloor exposures of serpentinized peridotite
Notes Relevant to Biology:
Year and How Discovered (if active, visual confirmation is listed first):
1988 plume only; 1992 submersible Nautile did not observe active vents
Discovery References (text):
(plume only) Charlou et al, Geochim. Cosmochim. Acta, 55, 3209-3222, 1991, Different TDM/CH4 hydrothermal plume signatures: TAG site at 26°N and serpentinized ultrabasic diapir at 15°05′N on the Mid-Atlantic Ridge.
Other References (text):
Charlou et al., Intense CH4 plumes generated by serpentinization of ultramafic rocks at the intersection of the 15°20′N fracture zone and the Mid-Atlantic Ridge, Geochim. Cosmochim. Acta, 62, 2323-2333, 1998.