Survey Metadata




Till sampling survey, NTS 74I/8, southern McMahon Lake area, northern Saskatchewan, 1979-1980.

Location map

(requires an Internet connection)

Survey Description

During the summers of 1979 and 1980, 506 till samples were collected near the southern shore of McMahon Lake near the Midwest uranium deposit in northern Saskatchewan.  Samples of basal till were collected along lines at right angles to the long axis of the boulder train.  The samples were spaced at 30 m intervals along lines 240-360 m apart.  In addition, samples were recovered from the till beneath the water of South McMahon lake immediately up-ice from the boulder train.  A summary of the work can be found in Geological Survey of Canada Paper 82-11.

Data Description:

Paper report.

Quantities Analysed:

<0.063 mm fraction analyzed for U by fluorometry and neutron activation.

Geochem Maps Available:

Contour map showing geochemical dispersion of uranium in basal till.

Publication History

Index Publication
1 Simpson, M.A., Sopuck, V.J. (1983). Till geochemistry near the Midwest uranium deposit. In Uranium Exploration in Athabasca Basin, Saskatchewan, Canada, E.M. Cameron (ed.). Geological Survey of Canada, Paper 82-11, p. 207-214. (more)

Project History

Index Year Project
1 1978-1982 NEA-IAEA Test Area Program, northern Saskatchewan, 1978-1982 (more)

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
58.284° 58.325° -104.115° -104.046°

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

  • Covers part of NTS 74I/8 (Henday Lake) in northern Saskatchewan.  It includes the southern shores of McMahon Lakes and the Midwest uranium deposit.  Hamilton Lake is located approximately 5 km west of the study area.


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