Survey Metadata

NGR stream

British Columbia


BC RGS stream sediment and water survey, NTS 104K, northwestern British Columbia, 1987.

Location map

(requires an Internet connection)

External Links

Index Link
BC EMPR Regional Geochemistry ( LinkID=683 more)
Metadata page for BC Regional Geochemical Survey RGS 20 (NTS 104K). Includes links to related data.

Survey Description

During the summer of 1987, helicopter (97%) and truck (3%) supported stream sediment and water collection was carried out in the Tulsequah area, northwestern British Columbia.  Samples were collected from 847 sites at an average density of one site per 11.7 km2 throughout the 9,900 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 20/Geological Survey of Canada Open File 1647.

This survey was carried out using National Geochemical Reconnaissance (NGR) protocols.

Sampling Procedure

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.

Publication History

Index Publication
1 Matysek, P.F., Day, S.J., Gravel, J.L., Jackaman, W. (1988). Tulsequah, British Columbia. Geological Survey of Canada, Open File 1647/British Columbia Regional Geochemical Survey RGS 20. (more)

Project History

Index Year Project
1 1987-1988 Northwestern British Columbia stream sediment and water surveys carried out in 1987 (more)

Downloadable Files

Index Description Size (bytes)
GSC Open File 1647 digital data ( FileID=1219 download)
The data are packaged as a single zip file, compatible with modern operating systems.
Introductory text for GSC Open File 1647 ( FileID=536 download)
This PDF file contains the introductory text for GSC Open File 1647.  It was scanned from the original document.  The data are not included in this file.
Diskette to accompany GSC Open File 1647 ( FileID=163 download)
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.

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
58° 59° -133.75° -132°

The geographic extent of the survey is defined by the following polygons:

  • Covers part of NTS 104K (Tulsequah) in northwestern British Columbia.  It is bounded to the west by the Alaska-British Columbia border.


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