LTH; NFS, Fe & Mn crusts and metalliferous sediments
Notes on Vent Field Description:
Teahitia-Mehetia Seamounts, Society Hotspot, Society Islands; Stueben et al. (1992): "Hydrothermal vents discharging turbid water have recently been discovered at Teahitia and Macdonald seamounts, which are situated at the southeast ends of two South Pacific hotspot systems. Mixtures of the plumes with ambient seawater were sampled during the 1989 CYAPOL cruise and found to contain significant amounts of CH4, Mn, Fe, Zn, and Ni, which are comparable in concentration to those found over hydrothermal fields on the EPR", "Multiple maxima in hydrocast profiles indicate the presence of several distinct hydrothermal vents at different water depths on Teahitia"; Michard et al. (1993): "Hydrothermal water can only be located by its refractive index which differs from that of seawater, as no precipitate seems to occur and no macrofauna live around the vents."; GEOTRACES 2013 cruise report, R/V Thompson TGT303, indicates hydrocast above Teahitia volcano
Year and How Discovered (if active, visual confirmation is listed first):
Discovery References (text):
[Hoffert et al., C.R. Acad. Sc. Paris, 304, 14, 829-832, 1987, Depot hydrothermal associe au volcanisme sous-matin intraplaque prelevements effectues avec la Cyana sur le vulcan actif de Teahitia (Polynesie Francaise)].
Other References (text):
Stueben, D., et al. (1992) Manganese, methane, iron, zinc, and nickel anomalies in hydrothermal plumes from Teahitia and Macdonald volcanoes. Geochimica et Cosmochimica Acta, 56, 3693-3704, doi:10.1016/0016-7037(92)90162-C.
[Hékinian et al., Econ. Geol., 88, 2099-2121, 1993, Hydrothermal Fe and Si oxyhydroxide deposits from South Pacific intraplate volcanoes and East Pacific Rise axial and off-axial regions]
[Stoffers et al., Marine Georesources and Geotechnology, 11, 45-86, 1993]
Michard et al., Geochimica et Cosmochimica Acta, 57, 4977-4986, 1993, Submarine thermal springs associated with young volcanoes: The Teahitia vents, Society Islands, Pacific Ocean.