Geochronology, Deposit Studies and Geological Mapping, Penticton Map Sheet, East-half (082E1/2), Southern British Columbia

Lead Researcher(s):  T. Hoy

Project ID:  2018-011

Key Research Organization(s):  Independant Consultant

Project Location:  Kootenay

Strategic Focus Area:  Minerals


This project will generate new information about rock types and ages in the Kootenay Boundary area of southern BC, which has a rich mining history and is experiencing renewed exploration activity. Isotopic dating of specific rock types and new detailed geological maps over select areas will support new mineral exploration and ore deposit models for the area.

The Need

The Kootenay Boundary District has an extensive history of exploration and mine production that dates back to the late 1800s. New mapping with compilation of geological, geophysical, geochemical and now geochronological  data will provide a framework for evaluating potential mineral targets in a district that has seen renewed exploration interest in recent years.

Project Goals

The project will complete 1:50,000 geological mapping in the east half of the NTS map sheet 082E – Penticton. Specifically, the project plans to:

  • Investigate high level intrusions (smaller, younger intrusions into the dominant local rock type) that are more favourable for hosting mineralization;
  • Map areas of the Eocene Marron Formation in the Rock Creek graben, to recognize and trace favourable stratigraphic horizons that commonly host epithermal gold mineralization;
  • Date intrusive rocks using U-Pb and Ar-Ar dating methods with a focus on small, high-level intrusions within the large batholith; and
  • Update six previously published 1:50,000 maps with new age dates and resolve inconsistencies along map boundaries, establish common colours and symbols, and correlate and standardize local formation names.


Project Benefits

Recognizing, differentiating and dating smaller intrusions within this area will provide a useful tool for prospecting and exploration in an area that has previously been shown as an undifferentiated batholith.

This project will help to identify new natural resource opportunities in the Kootenay Boundary regional district and inform resource development decisions. By providing new exploration and deposit models, new geological maps, and through presentations, field trips and workshops with the southern BC exploration community, the project may attract investors, prospectors and exploration companies to the prospective areas north of Greenwood, BC. Exploration spending and the potential development of new mines would bring additional investment and employment opportunities to the area.

Survey Area

The survey area is in south-central British Columbia, between Greenwood to the west and Trail to the east. The Canada-US border runs along the southern boundary of the project area.

The nearby towns of Beaverdell, Rock Creek, Greenwood, Carmi, Boundary, Midway and Grand Forks in the Kootenay Boundary Regional District were founded by mining and have an extensive history of exploration and gold production. Several gold and silver (plus copper, lead and zinc) deposits have been mined in the area since gold was first discovered in 1884. More than 25 past producers are recorded in the Greenwood mining camp. This includes the Phoenix mine, a world-class open pit copper-gold skarn deposit, several smaller mines, and over 100 recorded mineral occurrences.