The Blizzard area is underlain by Upper Triassic volcanic rocks of the Stuhini Group consisting mainly of massive feldspar- and/or pyroxene porphyritic andesitic flows with lesser intercalated beds of siltstone, lapilli tuff and volcanic conglomerate. The beds generally strike northwest and dip moderately to the southeast. The package is not highly deformed, although it is possible that north trending, vertical faults crosscut the area. Locally, propylitic, silicified and K-feldspar altered intermediate to basaltic volcanic flows, welded crystal tuff, and various hypabyssal phases of a composite tonalite intrusion host quartz-carbonate filled fractures and veins containing chalcopyrite and pyrite with minor bornite, sphalerite and galena mineralization with localized coarse native gold. Throughout the Yeti property area, the veins vary from 0.01 metre to over 1 metre in width, as at the Crow vein (104G Blizzard).

Various large intrusion surround the Stuhini rocks in the Yeti area. Tonalite intrusions of the Middle Jurassic Three Sisters Plutonic Suite occur to the north and south, granodioritic intrusions of the Late Early Cone Mountain Plutonic Suite occur to the southwest, and a large unnamed Middle to Late Triassic quartz dioritic intrusion borders the Stuhini rock on the east.

The ultramafic “Yeti” body is in contact with the Stuhini rocks on its west and north and with the large unnamed Middle to Late Triassic quartz dioritic intrusion on the east. The “Yeti” ultramafic complex is a relatively small elongate intrusive body related to the Middle to Late Triassic Polaris Ultramafic Suite. This suite is an Alaskan-type intrusion that comprise a series of mafic-ultramafic complexes concentrated in northern British Columbia. The geochemical survey reported by Toscana Resources in 1990 (Assessment Report 21168) straddled the northern part of the “Yeti” body.

The Blizzard Zone consists of a subparallel series of drusy, coxcombe, and vuggy quartz and quartz-carbonate veins and breccia that pinch and swell from two centimetres to over one metre in width. There is moderate continuity of the veins along strike; .the Crow Vein has an orientation of 030-040 degrees/40-90 degrees east, and was sampled and traced for approximately 200 metres. A 1 to 3 metre wide fine-grained andesite dike trends 080 degrees and cuts the Crow Vein but does not appear to displace it. Within 10-20 centimetres of the vein-wall contact, quartz stockwork and strong chlorite-epidote- quartz alteration occurs. Erratic to consistent chalcopyrite-pyrite mineralization, commonly with bornite, occurs with quartz veins and siliceous shears. Assays from the Crow Vein samples (92K-07 and 92K-02) include 74 grams per tonne gold with 1.43 per cent copper and 4.9 grams per tonne silver across 1 metre; and 3.6 grams per tonne gold with 0.096 per cent copper across 1.2 metres. Where devoid of sulphides, the Crow Vein graded 0.009 per cent copper and 0.062 gram per tonne gold (Assessment Report 22773). Outside of the Crow Vein a 1 metre wide sample (90K-28) assayed 13.18 grams per tonne, 0.2 per cent copper, 562.1 grams per tonne silver, 4 per cent zinc and only 25 ppm lead (Assessment Report 22773).

In 2018, owner Carl Von Einsiedel arranged for a high resolution helicopter-borne aeromagnetic and radiometric survey to be flown over the Yeti Block, including the Blizzard occurrence. It consisted of 78 line kilometres, including 71 line kilometres flown at an orientation of 002/182 degrees and 7 kilometers of tie lines flown at 092/272 degrees. The line spacing was 200 meters and the survey was flown at an average survey height of 50.7 meters above terrain. Also in 2018, in order to verify the reported high nickel values from 1990, the current owners collected 9 rock and soil southern boundary of the 1990 soil survey grid.

See Yeti (104G 194) for related geological and work history details.