Helium isotope ratios (2He/4He) in Lassen Park and Yellowstone Park volcanic gasses show large 4He enrichments relative to atmospheric and crustal helium indicating the presence of a dominant mantle-helium component.
1978.
SD_ILS:743319
GEOLOGY-CHEMICAL(CRAIG)
00948276
Helium isotope ratios in Yellowstone and Lassen Park volcanic gases
Helium isotope ratios in Yellowstone and Lassen Park volcanic gases
Helium isotope ratios in Yellowstone and Lassen Park volcanic gases
Paper number 8L1106.
Helium isotope ratios in Yellowstone and Lassen Park volcanic gases