Pluton of Big Koniuji Island yielded a U/Pb zircon age of 61.1☐.3 Ma. The Sanak pluton of Sanak Island yielded ages of 61.1☐.5 Ma (zircon) and 62.7☐.35 (biotite). We present new U/Pb (monazite, zircon) and 40Ar/ 39Ar (biotite, amphibole) ages for 10 Tertiary plutons and dikes that intrude the Chugach-Prince William accretionary complex of southern Alaska.
