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Ministry of Energy Mines and Responsible for Core Review

Geoscience Map 2006-5: Geology of the Tahtsa Ranges Between Eutsuk Lake and Morice Lake, Whitesail Lake Map Area, West-Central British Columbia
(Parts of NTS 93E/5,6,9-15)

Geology and compilation by Larry J. Diakow

View Map (PDF 4.4 MB)


1 sheet at 1:150 000 scale

This geological compilation covers approximately six, 1:50 000-scale map sheets adjacent to the Coast Belt-Intermontane Belt boundary within the Whitesail Lake map area. The map is based on a compilation of geological mapping conducted by the BC Geological Survey during the Whitesail Project (1987-1990), as well as data available in previously published government reports and university theses. The area is underlain by a diverse assemblage of Late Paleozoic to Cenozoic volcanic, sedimentary and metamorphic rocks, together with numerous plutonic rocks.


The map features a collation of available fossil collections and age determinations. It also contains a mineral occurrence database that demonstrates a strong spatial relationship between Cu-Mo mineralization and hornblende-biotite-bearing intermediate intrusions of the Late Cretaceous and Eocene suites.

All publications of the BC Geological Survey are available digitally, free of charge, from this website.


For questions or more information on geology and minerals in British Columbia contact BCGS Mailbox or call toll free (BC Residents only).