Survey Metadata

Till, Indicator minerals



Till sampling survey, NTS 76H, I, western Nunavut, 2014.

Location map

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Survey Description

Between June 27 and July 4, 2014, till samples were collected at 55 sites in the Duggan Lake and Overby Lake map sheet areas, western Nunavut.  The work was part of theGEM-2 Thelon tectonic zone multidisciplinary geological mapping project.  Samples were collected from hand dug pits in active frost boils at an average depty of 35 cm.  At each site, one small sample (~3 kg) and one large sample (range=9.8-13.7 kg) were collected.  Some of the samples were taken to follow up on anomalous values in till (OF 7418) and stream sediment (OF7471).

The samples were processed for geochemistry and heavy minerals.  The data are published in Geological Survey of Canada Open File 7910.

Publication History

Index Publication
1 McMartin, I., Berman, R.G. (2015). Till composition across the MacAlpine Moraine System: results from the GEM-2 Thelon tectonic zone project, Nunavut (NTS 76-H and NTS 76-I). Geological Survey of Canada, Open File 7910, 21 p. (more)

Project History

Index Year Project
1 2010-2013 GEM Geochemical Surveys, 2010-2015 (more)

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
65.16° 67° -106.6143° -104°

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

  • Covers parts of NTS 76H (Duggan Lake) and 76I (Overby Lake) in western Nunavut.  It is bounded to the east by longitude 104°W and to the west by longitude 106°W.  It lies between the Queen Maud Gulf Migratory Bird Sanctuary in the northeast and the Thelon Game Sanctuary in the southeast.  Ellice River flows north through the study area

  • Covers part of the northwest quadrant of NTS 76I (Overby Lake) in western Nunavut.  It is bounded to the north by latitude 67°N and to the west by longitude 106°W.  The Queen Maud Gulf Migratory Bird Sanctuary lies to the east.

  • Covers a very small part of NTS 76G/10 (untitled 1 sample) in western Nunavut.  It is located approximately 115 km north of the NU-NT border and 35 km southeast of Lost Lake.


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