Scientific Investigations Map 2940 |
TKmd-3. North face of Bonanza Peak [Tsw], highest nonvolcanic peak in the North Cascade Range at 9,511 ft elevation, viewed from south side of Mount Lyall. The massif is underlain by Marblemount meta-quartz diorite (TKmd). Photographed in 1980. |
Other photos that show unit TKmd: |