Geology and Mineral Resources of the Skeena Arch, Central BC (NTS 93E, 93L, 93M, 94D, 103I, 103P)
- Don McIntyre, Independent Consultant

Skeena Arch Area 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.

Posters and Presentations
2007 : Geology and Mineral Deposits of the Skeena Arch, West Central BC - A Geoscience BC Digital Data Compilation Project
- Mineral Exploration Roundup Poster (pdf, 3.34MB)


2006 : Geology and Mineral Deposits of the Skeena Arch, West Central BC - A Geoscience BC Digital Data Compilation Project
- Mineral Exploration Roundup Poster (pdf, 2.92MB)

Technical Articles
2006 : "Geology and Mineral Deposits of the Skeena Arch, West-Central British Columbia (Parts of NTS 093E, L, M; 094D; 103I, P): Update on a Geoscience BC Digital Data Compilation Project"
- Geological Fieldwork 2006, Paper 2007-1 p.333-340 (pdf, 2.1MB)


2005 : "Geology and Mineral Deposits of the Skeena Arch, West-Central British Columbia: A Geoscience BC Digital Data Compilation Project"
- Geological Fieldwork 2005, Paper 2006-1 p.303-312 (pdf, 9.61MB)

Final Deliverables
Geoscience BC Report 2007-5 / Geofile 2007-3
Skeena Arch Metallogenic Data and Map

Geoscience BC Report 2007-5/Geofile 2007-3 presents the geology and mineral deposits of the Skeena Arch area of west central British Columbia. This digital report is the primary vehicle for distributing map-based geoscience data for this project, and contains a link to the project's interactive map hosted on the Ministry of Energy Mines and Petroleum Resources MapPlace website. This project was funded by Geoscience BC.

A key objective of the Skeena Arch project is to generate a series of GIS compatible data files that could be downloaded and incorporated into standard GIS software packages. The files are available as ESRI shape files as this format can be used in almost all commercially available GIS packages including ESRI's free Arc Explorer. Two projections are currently available -- UTM and Geographic. Also included for download is a Manifold GIS Map file that contains all of the layers used to build the Skeena Arch metallogenic map. Manifold also supports the creation of KLM files for use in viewers such as Google Earth. The following KML layers were generated for the project area: RGS, copper and molybdenum anomalies; MINFILE and Porphyry Cu-Mo and Mo occurrences; geology layers, including Babine, Bulkley and Nanika intrusive suites, faults and marker units; and logging roads.

 



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