Till Newfoundland and Labrador 1984

Till sampling survey, NTS 13K, central Labrador, 1984-1985.  


Geological Survey of Canada, Terrain Sciences Division

Survey Description

Approximately 550 till samples were collected in the Snegamook Lake area, central Labrador. The data are published in GSC Open File 1319.

Data Description: Side notes on paper maps.

Quantities Analysed: <0.002 mm fraction analysed by AAS for 8 elements and for U by delayed NA. <0.063 mm fraction analysed for 6 elements by XRF.

Geochem Plots Available: Maps showing element value (as a number) at each site.



Publication History

Thompson, F.J., Klassen, R.A., Burns, R.K. (1986). Till geochemistry, Snegamook Lake, Labrador. Geological Survey of Canada Open File 1319. 17 maps.

Klassen, R.A., Thompson, F.J. (1990). Glacial history, drift composition, till geochemistry, Labrador. Geological Survey of Canada Open File 2170.

Klassen, R.A., Thompson, F.J. (1993). Glacial history, drift composition, and mineral exploration, central Labrador. Geological Survey of Canada Bulletin 435. 82p.

Klassen, R.A., Knight, R.D. (1995). Till geochemistry of central Labrador. Geological Survey of Canada Open File 3213.

Klassen, R.A., Rencz, A.N., Moore, A. (1997). Comparison of geochemical sample media; till and lake sediment data, central Labrador. In Current Research, Geological Survey of Canada 1997-C, p. 235-245.

Klassen, R.A. (1999). The application of glacial dispersal models to the interpretation of till geochemistry in Labrador, Canada. In W.J. McMillan (Editor), Geochemical exploration 1999; selected papers from the 19th international geochemical exploration symposium. Journal of Geochemical Exploration, v. 67, p. 245-269. Elsevier (Amsterdam-New York).


Project History

1982-1988 Labrador till sampling surveys carried out in 1982-1988
  Till samples were collected to establish drift composition and patterns of glacial dispersal and to develop techniques of drift prospecting. The data are published in GSC Open Files 1282 (NTS 13N), 1318 (13J), 1319 (13K), 1320 (13L) and 1901 (23I,J,O,P).

1989-1990 Labrador-Quebec reanalysis project, 1990
  Data for the <0.002 mm fraction of till samples collected in Labrador and northeastern Quebec between 1982-1986 were previously published in GSC Open Files 1282, 1318, 1319, 1320 and 1901. The <0.063 mm fraction of most of these samples was reanalyzed for 8 elements by XRF; for Be by AAS; for Au, Pt, Pd by FA-ICP-AFS methods; and for Au by FA-AAS and INAA. These new results are published in GSC Open File 2170. GSC Bulletin 435 summarizes the data from all the above listed open files.

1994-1995 Labrador-Quebec reanalysis project, 1994
  During the 1980’s, the Geological Survey of Canada modeled ice flow and glacial dispersal in Labrador to support mineral exploration in the region by drift prospecting. More than 2000 till samples were collected and published in GSC Open Files 1282, 1318, 1319, 1320, 1901 and 2170. Since that time, there have been significant improvements in analytical methods that have increased the number of elements that can be easily determined by a single procedure and in some cases, have lowered the detection limits. To take advantage of those changes and to further define and expand on the geochemical properties of Labrador till, the silt and clay-sized fraction of archived till samples were subjected to a second round of geochemical analysis by ICP-AES and INAA. These new data are published in GSC Open File 3213.



Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude

54º

55º -62º -60º