Geology and Mineral Resources of the Skeena Arch, Central BC (NTS 93E, 93L, 93M, 94D, 103I, 103P)
- Don McIntyre, Independent Consultant
The Skeena Arch transects central British Columbia and represents a long lived magmatic arc that has produced a diverse range of mineral deposits in a wide variety of geologic settings. It is some of the most richly endowed terrain in British Columbia and has been the site of mineral exploration since the turn of the century. Since 1985 the BC Geological Survey Branch and the Geological Survey of Canada have been involved in regional mapping projects along the Skeena Arch, first as part of the Whitesail and Smithers projects and more recently as part of the Interior Plateau and Nechako NATMAP projects. This work has resulted in a much better understanding of the geologic evolution of the arch, particularly during the metallogenically important Jurassic through Cretaceous time periods. Although there are gaps in the map coverage, a large part of the proposed project area (80%) has now been mapped in detail. The project will provide a means of bringing existing data together as a series of standardized, digital, geology maps with linked databases for structure, mineral occurrences, geochemistry, geophysics, geochronology and paleontology. A new series of 17, 1:100,000 scale maps will be produced for the area and made available in digital and hardcopy format.
This project will help to stimulate mineral exploration by providing mineral explorationists with a comprehensive, upto- date, all inclusive, GIS compatible compilation of existing geoscience data in one of the most prospective areas of BC. The current database for this area is a mixture of digital and non-digital data from a wide range of projects that were done at different times and scales by different government agencies and exploration companies. This data needs to be compiled, integrated and standardized into a format that can be used in a GIS. Building such a database will help explorationists identify new exploration targets and re-evaluate areas of known mineral occurrences using new geologic and metallogenic models. Particular focus will be directed toward porphyry Mo and Eskay Creek type deposits. In addition to providing a comprehensive, standardized database, this project will also analyze the data and generate a list of potential target areas for consideration thus assisting the exploration community in their evaluation of the potential for new discoveries.
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