Lupton, John; Arculus, Richard; Resing, Joseph; Massoth, Gary; Greene, Ronald; Evans, L J; Buck, N
The Northwest Lau Backarc Basin, consisting of the Northwest Lau Spreading Center (NWLSC) and the Rochambeau Rifts (RR), is unique in having elevated 3He/ 4He ratios (up to 28 R a) in the erupted lavas, clearly indicating a hot spot or ocean island basalt (OIB)-type signature. This OIB-type helium signature does not appear in any other part of the Lau Basin. Water column plume surveys conducted in 2008 and 2010 identified several sites of active hydrothermal discharge along the NWLSC-RR and...[Show more]
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