The PAC 2-4 showing area is underlain by andesitic volcanic flows and sedimentary rock of the Lower Jurassic Telkwa Formation, Hazelton Group. A granodiorite to quartz monzonite porphyry stock of the Eocene Kastberg Plutonic Suite intrudes the Telkwa package about 1 kilometre to the southeast, though many dikes off the stock occur in the area. A gossanous area was reported to occur on the Pac 2 and Pac 4 claims held by Keywest Resources Ltd., in 1973. The gossan contains pyrite, pyrrhotite and a small amount of copper mineralization (Assessment Report 4686). No samples were taken at the time.

See Driftwood (094D 062) for related details.