title: Potassium-Argon and Lead-Alpha Ages of Plutonic Rocks, Bokan Mountain Area, Alaska.
abstract: Most of the granitic rocks in the Bokan Mountain area, southeastern Alaska, are early Paleozoic (probably Ordovician) judged by potassium-argon and lead-alpha age measurements. The Bokan Mountain Granite, the youngest intrusive unit in the area, belongs to a Mesozoic plutonic episode. These age measurements are the first direct evidence for the emplacement of early Paleozoic granitic intrusive rocks close to the Pacific margin of North America.
authors.forename: M A
authors.initials: MA
authors.lastname: Lanphere
authors.forename: E M
authors.initials: EM
authors.lastname: Mackevett
authors.forename: T W
authors.initials: TW
authors.lastname: Stern