Consists of biotite-dominant, hornblende- and sphene-bearing granodiorite and subordinate quartz monzonite, quartz diorite, and leucogranite found in Coast Mountains of southeast Alaska (Berg and others, 1978, 1988; Elliott and Koch, 1981; Brew and others, 1984; Webster, 1984; Brew and Grybeck, 1984; Brew and Ford, 1977, 1985; Souther and others, 1979; Redman and others, 1984; Barker and others, 1986, Gehrels and Berg, 1992, Karl and others, 1999, Brew and Friedman, 2002). These plutons are found in a belt adjacent to the international border along the east side of southeast Alaska. Associated is migmatite that consists of schist, gneiss, tonalite, and granodiorite that is invaded by the plutonic rocks of this unit. The migmatite includes stockwork agmatite and banded hornblende gneiss and biotite-hornblende gneiss, amphibolite, biotite quartz schist, and some calc-silicate rocks (Brew and Grybeck, 1984, Koch and Berg, 1996). Radiometric ages vary; K/Ar ages on biotite and hornblende yield both concordant and discordant Eocene ages, whereas U/Pb analyses (Barker and others, 1986; Alldrick and others, 1987; Berg and others, 1988) yield Eocene ages. Age determinations primarily reflect timing of intrusions, the original country rock many have been significantly older