Averaged helium to carbon dioxide ratios measured from systematic collections of gases from Sulphur Bank fumarole. Kilauea, Hawaii, when coupled with estimates of carbon in the earth's crust, give a helium flux of 1 x 105 atoms per square centimeter per second. This is within the lower range of other estimates, and may represent the flux from deep-seated sources in the upper mantle.
No takes yet. Share an insight, caveat, or question.
Naughton et al. (1973) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: