New geophysical data from the Yahk map area, southeastern British Columbia - part of the East Kootenay multiparameter geophysical survey

Abstract

High-resolution electromagnetic, aeromagnetic, and gamma-ray spectrometric data were recently acquired in a 500 km² area in the Yahk map area (82F/1), southeastern British Columbia. An initial analysis of these data, coupled with brief ground follow-up investigations, has led to the identification of previously unmapped Moyie sills, and shown that the orientation of an inferred fault in the Russell Creek area is more north-trending than previously thought. There are relatively few non-cultural finite electrical conductors identified in the Yahk area. In addition, the lower Creston Formation is very magnetic here and faults are commonly associated with linear zones of steep magnetic gradient. Surficial sediments infilling some of the major drainages are conductive and magnetic and may have placer potential.