BABB, MORB, low-K andesite, dacite
PMS, polymetallic massive sulfides
Notes on Vent Field Description:
widespread diffuse low-temperature venting, inactive sulfide chimneys, barite-silica chimneys, low-temperature Fe-oxides, and associated Fe-Mn crusts in the axial rift, Mn-oxide crusts over fossil high-temp. deposits; note: 2003 plume survey on cruise SS02/2003 indicated diminished activity; southern Valu Fa Ridge; located within Nautilus Minerals tenement
Notes Relevant to Biology:
densely populated with mussels, shrimp, crabs, barnacles, tubeworms, fish [Desbruyeres, D. et al. (1994)]
Year and How Discovered (if active, visual confirmation is listed first):
Discovery References (text):
Fouquet, Y., et al. (1991) Hydrothermal activity in the Lau back-arc basin: sulfides and water chemistry. Geology 19: 303-306.
Other References (text):
Fouquet et al., Econ. Geol., 88, 2154-2181, 1993, Metallogenesis in Back-Arc Environments: The Lau Basin example
Desbruyeres, D. et al. (1994) Deep-sea hydrothermal communities in Southwestern Pacific back-arc basins (the North Fiji and Lau Basins): Composition, microdistribution and food web. Marine Geology 116: 227-242
Baker, E.T. et al. (2005) Hydrothermal activity on near-arc sections of back-arc ridges: results from the Mariana Trough and Lau Basin. Geochem. Geophys. Geosyst. 6: Q09001, doi:10.1029/2005GC000948.