The upper half of Blizzard (Gold Run) Creek is underlain by Permo-Carboniferous limestone, argillite and quartzite. The lower part of the Creek traverses Jurassic (?) granite and Tertiary basalts. The Creek is reported to contain numerous quartz boulders. Most of the placer mining took place in the lower 3 kilometres of the 12 kilometre long creek. Fine gold was found near surface and to a depth of 1.1 metres, below this, coarse gold was found for the next 0.5 metres. The depth to bedrock is estimated to be 3 metres below the surface. The creek was worked for brief periods from 1901 to 1930; production recorded was 5.2 kilograms (183 ounces) of gold. The probable source of the placer gold is from the Permo-Carboniferous sediments which, as seen at Muncaster Creek (a placer gold creek directly north - see 114P 004), contain mineralized quartz veins.