Till Nunavut 1994

Till sampling survey, NTS 86I, Nunavut, 1994.  


Geological Survey of Canada, Terrain Sciences Division

Survey Description

190 till samples collected in the Napaktulik Lake area, Nunavut in 1994. Data are published in GSC Open File 3316. Kimberlite indicator mineral distribution and composition are published in GSC Open File 3355.

Data Description: Paper report and 1 diskette (WP5.0, ASCII and Excel3.0 formats).

Quantities Analysed: <0.002 mm fraction by ICP-AES after aqua regia (3HCl:1HNO3) for 28 elements. <0.063 mm fraction by INAA for 35 elements.

Geochem Plots Available: Proportional symbol maps showing dispersal of elements in the <0.002 mm and <0.063 mm fractions of till.

Other Analyses: Pebble lithologies; heavy mineral concentrate (45 samples) for gold grain counts and non-magnetic heavy minerals for kimberlite indicator minerals (see GSC OF 3355).



Publication History

Kerr, D.E., Dredge, L.A., Ward, B.C. (1995). Surficial geology, Naptaktulik Lake, District of Mackenzie, Northwest Territories. Geological Survey of Canada Open File 3032,

Kerr, D.E., Dredge, L.A., Ward, B.C. (1996). Till geochemistry and gold grain results, Napaktulik Lake area, Northwest Territories (86I). Geological Survey of Canada Open File 3316.

Kerr, D.E., Kjarsgaard, I.M., Dredge, L.A., Ward, B.C., Stirling, J.A.R. (1996). Distribution and composition of kimberlite indicator minerals, Napaktulik Lake map area, Northwest Territories (86I). Geological Survey of Canada Open File 3355, 34 pages.


Project History

1994-1996 NATMAP Slave Province Project, Quaternary geology component, 1994-1996.
  The Quaternary geology component of the Slave Province National Mapping Program was designed to provide a regional framework for geologic interpretation of surficial sediments, environmental management and drift prospecting. The project involved mapping the surficial geology, till sampling and measuring ice flow indicators. The geochemical data will help establish regional background concentrations of selected trace and minor elements for mineral exploration and environmental base line studies. The data are published in GSC Open Files 3316 and 3355 (NTS 86I); GSC Open Files 3317 and 3341 (NTS 86H); GSC Open Files 3386, 3387 and 3654 for NTS 76E; GSC Open File 3412 for 86O and GSC Open File 3360 (NTS 86P). As part of the project, detailed till sampling was undertaken around the Ranch Lake kimberlite in the southern Contwoyto Lake map area. The results of this part of the project will aid in the design of mineral exploration programs for kimberlite-hosted diamond deposits in glaciated terrain. The data are published in GSC Open File 3924.



Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude

66º

67º -114º -112º