A few sediment samples from the Nankai Trough have been analyzed to determine the He concentrations and the 3He/4He isotope ratios in the mineral phase. The CO(2) produced by heating the samples in a Ta furnace (i.e., the gas extraction step at up to 1800°C) was analyzed for its δ13C isotope signature.
Tomonaga, Y., Brennwald, M. S., Meydan, A. F., & Kipfer, R. (2014). Noble gases in the sediments of Lake Van – solute transport and palaeoenvironmental reconstruction. Quat. Sci. Rev., 104, 117–126.
can be downloaded for free until January 7th 2015 using the following link.
A FP7 Marie Curie International Outgoing Fellowship