The Umiti Creek property lies within the northwesterly trending Quesnel Trough which is predominantly underlain by the Upper Triassic-Lower Jurassic Takla Group consisting of andesite flows, tuffs, agglomerate, basalt, breccia and argillite. The northwestern end of a sliver of Jurassic shale, greywacke and conglomerate extends onto the Umi 4 claim. Early Cretaceous intrusions have been mapped both to the north and south of the subject property.