These migmatitic rocks are exposed in three areas of the state: southeast Alaska, the southern Brooks Range, and on the Seward Peninsula. In southeast Alaska, migmatite is widespread and associated with Cretaceous plutons and tends to be of granodioritic to quartz dioritic composition (Brew and others, 1984; Brew and Ford, 1985; Brew, 1996; Karl, 1999; Karl and others, 1999; D.A. Brew, written commun., 1997). It ranges from agmatite (brecciated migmatite) to gneiss. Locally, schist, gneiss, and marble inclusions are present. In the southern Brooks Range and Seward Peninsula areas, these migmatitic rocks are associated with the mid-Cretaceous quartz monzonite bodies of map unit Kmqm (Brosgé and others, 1973; Till and others, 2008, 2010). In the Chandalar quadrangle, the migmatite forms an annular ring around rocks interpreted as one of the metamorphosed Devonian plutons of the Brooks Range (unit Dogn) (Brosgé and Reiser, 1964). The migmatite also forms a roof pendant on a nearby mid-Cretaceous quartz monzonite. On the Seward Peninsula, the unit is a gneissic monzonite exposed between rocks of the Casadepaga Schist (unit Ocs) and the mid-Cretaceous Kachauik pluton (units Kmgd and Kmgm) (Till and others, 2010)