Abstract
Sulfur is the sixth most abundant element in the whole Earth and may be one of the light elements in the Earth's core. It carries the potential as a key to constrain chemical distribution in view of mantle-core interaction.Some pioneering works tried to analyze sulfur isotopic ratio of oceanic basalt. It shows a uniform value that is within the range of iron meteorites. In addition, local variation in sulfur isotope ratio outside the normal mantle value used to be ascribed to solubility controlled degassing fractionation.
We will present newly detected sulfur isotope ratios of Loihi lavas whose variation cannot be interpreted only by the equilibrium degassing fractionation or contamination with seawater.
