The region is underlain by (?)Hadrynian to Paleozoic Snowshoe Group rocks, which occur within the Barkerville Terrane of south-central British Columbia. These metasedimentary rocks consist primarily of marble, quartzite and phyllite which in the area of the Cariboo Canyon showing comprise the Downey succession (informal name). Metamorphism of the region varies from chlorite grade to sillimanite and higher. The lode gold deposits of the region occur in rocks metamorphosed no higher than greenschist facies.

Mineralization at the Cariboo Canyon showing consists of pyrite and gold within quartz veins cutting metasedimentary rocks. Although only two quartz veins are exposed in outcrop, a drillhole intersected several quartz veins varying in width from 10 to 25 centimetres. A 25 centimetre drill core sample assayed 27.75 grams per tonne gold (Bulletin 38, page 81).

In 1983, a program of silt, soil, heavy mineral and rock sampling and geological mapping was conducted on the Pitt claims on behalf of Pluton Resources Ltd. In 1996, geological mapping was conducted in a 3 square kilometre area on the western portion of the Nugget Mountain property; a total of 129 soil samples and 49 rock samples were collected. The Cariboo Canyon showing is located within a 1 kilometre radius of several showings (Gisco (093A 052), Pitt 1 (093A 053), Pittman (093A 057)) that were explored along Antler Creek in the 1930s and 1940s, near the mouths of Nugget Gulch and Victorian Creek. In 1987, Rise Resources Inc. completed 419 kilometres of helicopter-borne magnetic and VLF-EM survey over their block of claims which covered the Zone showing. In 2005, a total of 43 samples (9 soil, 1 moss mat silt and 33 rock) were taken on the Nugget Mountain project claims, which covers the showing, on behalf of claim owners R.J. Menard and G.J. Newell.