Mantle source provinces beneath the Northwestern USA delimited by helium isotopes in young basalts
Graham DW, Jordan B, Leeman WP. 2009. Mantle source provinces beneath the Northwestern USA delimited by helium isotopes in young basalts. Journal of Volcanology and Geothermal Research. 188(1-3):128-140
Report new He, Nd and Sr isotope results for basalts from the northwestern United States. The new 3He/ 4He results for olivine phenocrysts in basalts from the eastern Snake River Plain (SRP), the Owyhee Plateau (OP) and the Oregon High Lava Plains (HLP), together with published He isotope data for Yellowstone and the Cascades volcanic arc, delineate distinct mantle sources for each of these sub-provinces.
- Type
- Journal Article
- Authors
- Graham, David; Jordan, Brennan; Leeman, William
- Units
- CRMO
- Keywords
- helium isotopes, High Lava Plains, mantle plume, Snake River Plain, Yellowstone