Extensively altered and sheared, green to gray-green, medium-grained, hornblende ± biotite diorite, gabbro, and minor quartz diorite that forms extensive sills and dikes within the Whitestripe Marble and along the contacts of the Whitestripe Marble and Goon Dip Greenstone southwest of the Peril Strait Fault. Mafic minerals are generally altered to chlorite and epidote or clinozoisite. Rocks are generally foliated and locally have extensive shear and cataclastic textures. Similar sheared dioritic rock intrudes marble and greenstone and also occurs as large blocks in the mélange facies of the Yakutat Group (unit KJyg here), which is thought to be correlative with the Kelp Bay Group (Johnson and Karl, 1985) (unit K^m, here). Unit spatially associated with rocks of unit KJse in southeast Alaska. On Halleck Island, unit has yielded several ages: a U/Pb zircon age of 192.8 ±2.4 Ma; 40Ar /39Ar hornblende ages of 191.9±1.2 and 185.4±3.8 Ma; and an 40Ar /39Ar white mica cooling age of 157.2±2.6 Ma (S.M. Karl, unpub. data). In the Juneau and Ketchikan quadrangles, unit also includes altered and (or) metamorphosed and undated diorite and quartz diorite that are exposed in small areas associated with rocks of the Gastineau Group (unit }|sv) and the Gravina-Nutzotin unit (unit KJgn) (Gehrels and Berg, 1992; Karl, 1992; S.M. Karl, unpub. data)