Survey Metadata

NGR stream

Northwest Territories


NGR stream sediment and water survey, NTS 105O, P, Mackenzie Mountains, Northwest Territories, 2004.

Location map

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Survey Description

During July 2004, a regional stream sediment and water survey was carried out in the Macmillan Pass – Sekwi Mountain area, Northwest Territories.  Samples were collected from 916 sites at an average density of 1 sample site per 13 km2.  The data are published in GSC Open File 4949.  Some data from this survey are also included in GSC Open File 5344.

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

Sampling Procedure

NGR stream sediment and water

At each site a pre-labelled Kraft paper bag was two-thirds filled with silt or fine sand collected from the active stream channel.  In practice, the silt sample was collected after water samples were collected but before a bulk sediment sample.  Handfuls of silt from various points in the active stream channel were collected while gradually moving upstream.  A moss mat sample was sometimes collected when a suitable sample was scarce or absent.

At every site, waters were sampled mid-channel, from flowing water where possible.  At sites where sediments were taken for heavy mineral concentration (approximately every second site) two water samples were generally collected.  Samples were collected in 125 mL Nalgene bottles.  The bottles were rinsed two or three times before collecting the sample.

Publication History

Index Publication
1 Day, S.J.A., Lariviere, J.M., Friske, P.W.B., Gochnauer, K.M., MacFarlane, K.E., McCurdy, M.W., McNeil, R.J. (2005). National Geochemical Reconnaissance (NGR): Regional stream sediment and water geochemical data, Macmillan Pass - Sekwi Mountain, Northwest Territories. Geological Survey of Canada, Open File 4949. (more)
2 McCurdy, M.W. McNeil, R.J., Friske, P.W.B., Day, S.J.A., Wilson, R.S. (2007). Stream sediment geochemistry in the proposed extension to the Nahanni Park Reserve. In Mineral and Energy Resource Assessment of the Greater Nahanni Ecosystem under Consideration for the Expansion of Nahanni National Park Reserve, Northwest Territories, D.F. Wright, D. Lemkow, J.R. Harris (ed.). Geological Survey of Canada, Open File 5344, p. 75-98. (more)
3 Falck, H., Day, S.J.A., Pierce, K.L., Rentmeister, K., Ozyer, C.A., Watson, D.M. (2012). A compilation of heavy mineral concentrates: results from stream sediment samples collected 2007-2010, Mackenzie Mountains, NWT. Northwest Territories Geoscience Office, NWT Open Report 2012-001. (more)

Project History

Index Year Project
1 2003-2007 NGR/NTGO stream sediment and water surveys, Northwest Territories, 2003-2005 (more)
2 2004-2007 Nahanni National Park Reserve MERA 2, Northwest Territories, 2004-2005 (more)

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
63° 64° -130.78° -128°

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

  • Covers NTS 105P (Sekwi Mountain) and the east part of NTS 105O (Niddery Lake).  It is bounded to the west by the Yukon-Northwest Territories border.


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