Upper Triassic Karmutsen Formation (Vancouver Group) greenstones are in fault contact with Jurassic to Triassic Kunga Group rocks comprised of grey massive and black bedded limestones (Sadler and Peril formations) and thin-bedded limy argillites (Sandilands Formation).

The Kunga rocks are bounded to the west, east and south by major faults trending north, north-northeast and west-northwest, respectively. Karmutsen rocks lie beyond these faults.

Three gold showings occur within Kunga sediments along or within rhyolitic or dacitic dikes and along or close to strong northwest trending faults. The dikes are likely of the Eocene-Oligocene Kano Plutonic Suite (Lyell Island dike swarm). The showings contain up to 20 per cent combined arsenopyrite and pyrite, occurring as disseminations in limy argillites and along fractures associated with minor quartz veins in zones of weak to pervasive silicification.

A 1.5-metre sample at No. 1 showing assayed 9.2 grams per tonne gold. A rock sample from the No. 2 showing, 490 metres north- northwest of the No. 1 showing, returned an assay of 3.91 grams per tonne gold. The No. 3 showing, 300 metres south-southeast of No. 1, is a jasperoid body 10 to 12 metres wide by 80 metres long in grey limestone (Sadler Formation) and contains anomalous gold values in excess of 5 grams per tonne (Assessment Report 17097).