The Neogene Chilcotin Group (CG) volcanic rocks are located in south central British Columbia and cover approximately 36,500 km2 of Mesozoic and Paleozoic basement rocks. The CG volcanic rocks are un-mineralized, however the basement rocks that they cover are highly prospective for base and precious metal deposits and possibly for hydrocarbon deposits in the Nechako Basin. The nature, distribution, stratigraphy, thickness variation, age, and composition of this voluminous flood or plains basalt province are poorly known. Existing information is so antiquated as to be of little use to the mineral or hydrocarbon exploration community. The project research will be to map, collect field geophysical data, and sample the CG throughout its known extent in southern British Columbia.
A GIS map will be produced from field mapping, and observations found through this study, as well as the previous work and interpretations. Geochemical investigations of the rock samples collected will provide compositional and isotopic data in order to better understand the nature and origin of these extensive basalts and will be tied into the model. The map(s) could provide a more robust decision-making tool for industry mineral exploration geologists extrapolating the regional geology; metallogeny and structure beneath these cover rocks in the search for mineral deposits because the distribution of the cover rocks will be much better known.