Dr. Mortlock and co-investigator Dr. Brent Turin are receiving funds for U-Th dating of coral reef sequences to reconstruct sea level at Hawaii during Marine Isotope Stages (MIS) 2 thru 4 (~ 20 ka to 60 ka) and Ar-Ar dating of recovered basalt flows from Kohala, Mauna Kea, and Hualalai to better expand our understanding of the evolution of a major mantle plume.