Survey Metadata

Soil, Till

British Columbia


Soil and till sampling, NTS 93K, N, central British Columbia, 1997-1999.

Location map

(requires an Internet connection)

Survey Description

In 1997, 1998 and 1999, soil, till and non-vascular plants (moss and epiphytic lichen) were collected at 65 sites controlled by road access near two past-producing mercury (Hg) mines in central British Columbia.  Two transects, one at Pinchi Lake mine and the other at Bralorne Takla mine are oriented east-west parallel to ice flow direction.  A third transect extends from SE of Pinchi Lake mine to just NW of Bralorne Takla mine and is parallel to Pinchi Fault.  Sample sites were selected at 100 m from roads in open forest to avoid potential dust contamination.  At each site three samples were collected, including humus (0-10 cm), B horizon (15-20 cm) and C-horizon (unweathered glacial sediment; 80-100 cm).  C horizon samples were collected preferentially in till.  Moss and lichen samples were collected at some sites.  The study is published in GEEA, v.4.

Data Description:

Paper report, no data lists.

Quantities Analysed:

<2mm fraction separated and crushed and analyzed following a sequential leaching procedure by ICP-MS or CV-AAS.

Geochem Maps Available:

Transect diagrams showing spatial variation of Hg and Sb concentrations.

Other Analyses:

Lichens and mosses analyzed for Hg using the Milestone and INAA.

Publication History

Index Publication
1 Plouffe, A. (1998). Detrital transport of metals by glaciers, an example from the Pinchi Mine site, central British Columbia. Environmental Geology, v.33, p.183-196. (more)
2 Rasmussen, P.E. (1998). Long-range atmospheric transport of trace metals: the need for geoscience perspectives. Environmental Geology, v.33, p.96-108. (more)
3 McMartin, I., Henderson, P.J., Plouffe, A., Knight, R.D. (2002). Comparison of Cu-Hg-Ni-Pb concentrations in soils adjacent to anthropogenic point sources: examples from four Canadian sites. Geochemistry: Exploration, Environment, Analysis, v.2 p.57-73. (more)
4 Plouffe, A., Rasmussen, P., Hall, G. E. M., Pelchat, P. (2004). Mercury and antimony in soils and non-vascular plants near two past producing mercury mines, British Columbia, Canada. Geochemistry: Exploration, Environment, Analysis, v. 4, p. 353-364. (more)

Project History

Index Year Project
1 1997-2004 Central British Columbia mercury study, 1997-1999 (more)

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
54.375° 55.875° -125.5° -124°

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

  • Covers part of NTS 93K (Fort Fraser) and 93N (Manson River) in central British Columbia.  The Pinchi Lake Mine is located in the southeast corner of the study area and the Bralorne Takla Mine in the northwest corner.


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