Larson Seamounts, Volcano "E"
LTH, fe-oxide and silica deposits
Notes on Vent Field Description:
off-axis seamount; small Fe oxide and silica deposits; Alt et al. (1987): "Red Seamount is presently hydrothermally active, and deposits consisting predominantly of amorphous Fe-oxyhydroxide are forming on small pillow cones in the caldera at temperatures of 10–15 °C"
Notes Relevant to Biology:
Year and How Discovered (if active, visual confirmation is listed first):
Discovery References (text):
[Lonsdale et al., Mar. Tech. J., 16, 54-61, 1982, Metallogenesis at Seamounts on the East Pacific Rise]
Alt et al., Geol. Soc. Am. Bull., 98, 157-168, 1987, Hydrothermal sulfide and oxide deposits on seamounts near 21°N, East Pacific Rise
Alt, J. Mar. Geol., 81, 227-239, 1988, Hydrothermal oxide and nontronite deposits on seamounts in the eastern Pacific.
Other References (text):
Batiza, R., and D. Vanko (1984), Petrology of Young Pacific Seamounts, J. Geophys. Res., 89(B13), 11, 235–11, 260.