Till Manitoba 1977

Till sampling survey, NTS 54E,F,L,K,M, 64I,J,K,N,O,P in northern Manitoba, 1977-1980.  


Geological Survey of Canada, Terrain Sciences Division

Survey Description

About 400 till samples were collected in northern Manitoba in 1977-1980. The data are published in GSC Current Research Paper 83-01B and GSC Open File 931.

Data Description: Paper report; no data lists (Paper 83-01B). 11paper maps (OF 931).

Quantities Analysed: <0.002 mm fraction by AAS after reverse aqua regia for Cu, Zn, Pb, Co, Ni, Mo, Cr, Mn, and Fe and by fluorometry after nitric acid digestion for U.

Geochem Plots Available: Summary map plot showing distribution of high-U sites (Paper 83-01B). Series of maps shows the element values at each sample site (OF 931).



Publication History

Dredge, L.A. (1983). Uranium and base metal concentrations in till samples from northern Manitoba. Geological Survey of Canada Paper 83-01B, p. 303-307.

Dredge, L.A. (1984). Uranium and base metal concentrations in till samples from northern Manitoba. Geological Survey of Canada Open File 931.

Dredge, L.A., Nielsen, E. (1986). Gold concentrations in till, Great Island, Northern Manitoba. Geological Survey of Canada Paper 86-01A, p. 779-782.


Project History

1977-1980 Northern Manitoba till sampling survey carried out in 1977-1980.
  Drift sampling is especially important in northern Manitoba because extensive areas are drift-covered and only 2% of the area is rock outcrop. Till samples were collected during the course of surficial geological mapping in northern Manitoba in 1977-1980. Because the samples were not collected solely for geochemical prospecting, the sample density is much too low for detailed geochemical interpretation of the data. The data do show the range of background values characteristic for the region, point out variations related to different bedrock types and ice flow directions and indicate a few areas where more detailed geochemical sampling is warranted. The data are published in GSC Current Research Paper 83-01B and GSC Open File 931.

1985-1986 Northern Manitoba reanalysis project
  Samples collected in northern Manitoba during the course of surficial geological mapping in 1977-1980 were previously analysed for uranium and base metals. The geochemical results showed that surface tills in the general vicinity of Great Island and as far south as the North Knife River had anomalously high arsenic values. Twenty-six till samples were therefore analysed for gold and reanalyzed for arsenic. The data are published in GSC Current Research Paper 86-01A.



Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude

57º

60º -102º -92º