From Wood and Kienle (1990) 
: "Kejulik is a remnant of a volcano in the southwestern Kejulik Mountains. A radial system of glacially carved valleys surrounds the present topographic high. Extensive glacial erosion has removed most of the lavas, but remnants of lava flows and lahars are preserved on the radial ridges. A series of dikes intrudes the near-horizontal Mesozoic sedimentary rocks beneath the flows. A zone of hydrothermally altered breccia near the present summit marks the former vent of the volcano.
"Little information has been published on Kejulik. All of the analyzed samples are porphyritic andesites. No recent activity is known."