Geofile 2008-11 presents for the first time in digital form the geology and mineral deposit potential of the Terrace area of northwestern British Columbia. It provides an easy-to-use introduction to the geology and exploration potential of the area. This release presents results of the ongoing Terrace Geological Mapping and Mineral Assessment Project which is now in its third year with publication of three 1:50,000 geological maps. This data release gives direct access to the digital files and geoscience data generated during the project.
For more details about this project see references below.
The GIS compatible data files on this CD represent a major part of the ouput of the 4 year, ongoing Terrace Geological Mapping and Mineral Assessment Project. The shape (.shp) files can be downloaded and incorporated into standard GIS software packages, including ESRI’s free Arc Explorer.
A Manifold GIS Map file that contains all of the layers used to build the Terrace map is above. We also welcome user comments to make this style of product more useful.
Also included are KML (.kml/.kmz) files for use in Google Earth – simply open GE then drag and drop the files from their folder into it. The following KML layers were generated for the project area: new rock geochemical analyses from the project, MINFILE and groups of mineral occurrences such as porphyry Mo associated with Eocene plutons; selected project photographs, and a new geological compilation that integrates 2005-2007 project mapping.
Finally, the Terrace Service Directory offers an introduction to services of use to explorationists in the area.
Note that there are 2 separate files presenting assay data. They both present the same data set, which includes all of the analyses in 2006 through 2008 publications. They differ in the “look” of the data. The file Terrace assays with symbols.kml shows symbols of varying size corresponding to concentrations of a given element, with different symbols/colours corresponding to the four key elements copper, gold, silver and molybdenum. Double clicking on an individual symbol will display the sample number and complete analysis. In the file Terrace photos and assays.kml, clicking on the “Au, Ag, Cu, Pb, Zn” in the left-hand menu and then double clicking on an individual sample will display assay results for these elements. If a single element is chosen in the left hand menu, tilt Google Earth to a slanted perspective, and the element will appear as a scaled column relative to its value. In this file, click “Turn off layers” in the left hand column under Geochemistry in order to view the photographs more clearly.
Nelson, J.L., Barresi, T., Knight, E. and Boudreau, N. (2006a): Geology and mineral potential of the Usk map area (103I/09) near Terrace, British Columbia; B.C. Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork 2005, Paper 2006-1, pages 117-134.
Nelson, J.L., Barresi, T., Knight, E. and Boudreau, N. (2006b): Geology of the Usk map area (193I/09); B.C. Ministry of Energy, Mines and Petroleum Resources Open-File 2006-3, 1:50,000 scale.
Nelson, J.L. and Kennedy, R. (2007a): Terrace regional mapping project Year 2: New geological insights and exploration targets (NTS 103I/16S, 10W), west-central British Columbia; BC Ministry of Energy, Mines and Petroleum Resources Geological Fieldwork 2006, Paper 2007-1, pages 149-162.
Nelson, J.L., Kennedy, R., J. Angen and S. Newman (2007b): Geology of the Terrace Map Area (103I 9,10,15,16), British Columbia; BC Ministry of Energy, Mines and Petroleum Resources Open-File 2007-4, 1:70,000.
Nelson, J.L., Kyba, J., McKeown, M. and Angen, J., in preparation: Geology of the Chist Creek map area (103I/08); B.C. Ministry of Energy, Mines and Petroleum Resources Open-File 2008-3, 1:50,000.
Nelson, J.L., Kyba, J., McKeown, M. and Angen, J. (2008, this volume): Terrace Regional Mapping Project Year 3: Contributions to Stratigraphic, Structural and Exploration Concepts Zymoetz River to Kitimat River, 103I/08; BC Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork 2007, Paper 2008-1, pages 159-174.
McKeown, M., Nelson, J.L. and Friedman, R.(2008): Newly discovered VHMS potential within Paleozoic volcanics of the Stikine assemblage, Terrace area, northwestern B.C.; B.C. Ministry of Energy, Mines and Petroleum Resources, Geological Fieldwork 2007, Paper 2008-1.
Hooper, D.G. (1984): Geological report on the Gazelle claim, record number 4229; B.C. Ministry of Energy, Mines and Petroleum Resources, Assessment Report 12717, 41 pages.
Hooper, D.G. (1985): Gazelle claim geological report; B.C. Ministry of Energy, Mines and Petroleum Resources, Assessment Report 14076, 25 pages.
All publications of the BC Geological Survey are available free on the website http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/
This data release project is a partnership between BC Geological Survey and TEDA (Terrace Economic Development Authority). See 2008 Terrace Business Directory for Natural Resources.
For more information on this release contact: JoAnne Nelson: Phone: (250) 952-0438 or Email.
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 please contact BCGS Mailbox or use the toll free number (BC residents only).