BC RGS stream sediment and water survey, NTS 104B, northwestern British Columbia, 1987.
(requires an Internet connection)
During the summer of 1987, helicopter (97%) and truck (3%) supported stream sediment and water collection was carried out in the Iskut River area, northwestern British Columbia. Samples were collected from 661 sites at an average density of one site per 12.5 km2 throughout the 8,200 km2 survey area. Duplicate samples were routinely collected from a site once in each analytical block of twenty samples. The data are published in British Columbia Ministry of Energy and Petroleum Resources Regional Geochemical Survey RGS 18/Geological Survey of Canada Open File 1645.
This survey was carried out using National Geochemical Reconnaissance (NGR) protocols.
Stream sediment samples ideally comprise 2 – 4 kg of sand size and finer inorganic material collected from low energy sites within the stream. Large Kraft paper sample bags were used to ensure sufficient fines were collected. Stream waters were taken using 250 mL Nalgene plastic bottles flushed out with water from the stream prior to collection of the sample.
|1||Matysek, P.F., Day, S.J., Gravel, J.L., Jackaman, W. (1988). Iskut River, British Columbia. Geological Survey of Canada, Open File 1645/British Columbia Regional Geochemical Survey RGS 18. (more)|
|2||Lett, R., Jackaman, W. (2003). Re-analysis of regional stream sediment survey samples from the Iskut River area (NTS 104B and G). British Columbia Ministry of Energy and Mines, Mining and Minerals Division, GeoFile 2003-20. (more)|
The data are packaged as a single zip file, compatible with modern operating systems.
This PDF file contains the introductory text for GSC Open File 1645. It was scanned from the original document. The data are not included in this file.
WARNING: the data on the diskette may have been packaged as a 16 bit self-extracting executable file, which is incompatible with 64 bit Windows computers.
|Minimum Latitude||Maximum Latitude||Minimum Longitude||Maximum Longitude|
The geographic extent of the survey is defined by the following polygons:
Covers part of NTS 104B (Iskut River) in northwestern British Columbia. It is bounded to the southwest by the Alaska border and Tongass National Forest.
- Date modified: