Survey Metadata




Humus sampling survey, NTS 52H/4, Lac des Iles area, northwestern Ontario, 1986.

Location map

(requires an Internet connection)

Survey Description

Humus samples were collected in 1976 at a detailed scale in the Lac des Iles area, district of Thunder Bay in northwestern Ontario.  The data are published in Ontario Geological Survey Map 80-800.

Data Description:

Paper map with report in map margin.

Quantities Analysed:

0.30-0.80 mm, 0.16-0.30, <0.18 mm fractions analyzed by ICP-AES for 22 elements; by INAA for 9 elements, and by AAS for Ag; 0.16-0.30 mm and <0.18 mm fractions analyzed both by AAS after nitric acid-aqua regia and ICP-AES fluorescence spectroscopy after fire assay for Pt and Pd.

Geochem Maps Available:


Publication History

Index Publication
1 Fortescue, J.A.C., Stahl, H., Webb, J.R. (compilers) (1988). Humus geochemistry in the Lac des Iles area, District of Thunder Bay. Ontario Geological Survey Map 80-800. (more)

Project History

Index Year Project
1 1986-1988 Northwestern Ontario detailed humus survey carried out in 1986 (more)

Geographic Extent

Minimum Latitude Maximum Latitude Minimum Longitude Maximum Longitude
49.17° 49.18° -89.68° -89.67°

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

  • Covers part of NTS 52H/4 (Lac des Iles) in the Lac des Iles area, District of Thunder Bay, northwestern Ontario.  It is located between Lackie Lake and Toulouse Lake.


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