Research about west-central Alaska

U, Th, and K analyses of selected plutonic rocks from west-central Alaska

Numerous samples of plutonic rocks collected during reconnaissance mapping in western Alaska have been analyzed for K, U, and Th. The U and Th content of the plutonic rocks from the southeastern Seward Peninsula have been discussed in a separate report (Miller and Bunker, 1975); because of the current interest in U and Th, the analyses of the remaining samples are given in this report.