Till Northwest Territories 1994

Till sampling survey, NTS 76E, Northwest Territories, 1994  


Geological Survey of Canada, Terrain Sciences Division

Survey Description

Detailed till sampling (82 samples) was carried out in 1994 around the Ranch Lake kimberlite, Northwest Territories. The data are published in GSC Open File 3924.

Data Description: Paper report; data files on diskette (Excel 5.0).

Quantities Analysed: <0.002 mm fraction by ICP-ES after aqua regia for 28 elements and <0.063 mm fraction by INAA for 35 elements.

Geochem Plots Available: Proportional symbol maps showing dispersal of selected elements.

Other Analyses: Heavy mineral concentrate for kimberlite indicator minerals; grain size.



Publication History

Dredge, L.A., Ward, B.C., Kerr, D.E. (1997). Till geochemistry and gold grain results, southern Contwoyto Lake map area, Northwest Territories (NTS 76E, 1-8, 12, 13). Geological Survey of Canada Open File 3387, 150 p. (includes diskette).

McClenaghan, M.B., Ward, B.C., Kjarsgaard, I.M., Kjarsgaard, B.A., Stirling, J.A.R., Kerr, D.E., Dredge, L.A. (2000). Indicator mineral and till geochemical dispersal associated with the Ranch Lake kimberlite, Lac de Gras region, Northwest Territories. Geological Survey of Canada Open File 3924, 182 p.


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

66.25º

66.28º -112º -111.45º