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Dossier Public 0507



Open File:  0507
Previous OF publication(s):  
Province / Territory:  Ontario
Funding Source:  Federal and Provincial
Year of Collection:  1977

Survey Type:  Regional Lake Survey
# Lake sites:  922
# Stream sites:  
Survey Area:  18025 km²
NTS Sheet(s):  052A, 052H

The regional lake sediment and water survey for the Thunder Bay area, northern Ontario (NTS 52A and south half of 52H) was conducted during the summer of 1977.

This report presents analytical and statistical data for 13 variables in lake sediments and three variables (U, F, pH) in lake waters from 922 sample sites, collected at an average density of one sample per19.6 km².

Analytical Data

Sediments
variable method detection limit year of analysis
Arsenic COL 1 ppm 1977
Cobalt AAS 2 ppm 1977
Copper AAS 2 ppm 1977
Iron AAS 0.02 pct 1977
Lead AAS 2 ppm 1977
Loss-on-ignition GRAV 1 pct 1977
Manganese AAS 5 ppm 1977
Mercury CV-AAS 10 ppb 1977
Molybdenum AAS 2 ppm 1977
Nickel AAS 2 ppm 1977
Silver AAS 0.2 ppm 1977
Uranium NADNC 0.2 ppm 1977
Zinc AAS 2 ppm 1977
Waters
variable method detection limit year of analysis
Fluorine ISE 20 ppb 1977
Uranium FT 0.01 ppb 1977
pH GCM 1977

Acknowledgements:

The reconnaissance survey was undertaken by the Geological Survey of Canada in conjunction with the Ontario Ministry of Natural Resources under the terms of the Canada - Ontario Agreement on a Uranium Reconnaissance Program.

Fisheries and Environment Canada provided funds for the determination of mercury.

E.H.W. Hornbrook directed the Geological Survey of Canada activities.

Collection:
Contractor and supervisor details for sample collection
Category Responsible Party
Contractor: Marshall Macklin Monaghan, Toronto, Ontario
Supervisor: E.H.W. Hornbrook , W.B. Coker (GSC)
Preparation:
Contractor and supervisor details for sample preparation
Category Responsible Party
Contractor: Golder Associates, Ottawa, Ontario
Supervisor: J.J. Lynch (GSC)
Analysis:
Contractor and supervisor details for sample preparation
Category Responsible Party
Contractor: Chemex Labs Limited, Vancouver, British Columbia Barringer Magenta Ltd., Toronto, Ontario Atomic Energy of Canada Ltd., Ottawa, Ontario
Supervisor: J.J. Lynch (GSC)

Other information:

Sediments were reanalyzed for additional elements in 1989. Data were released in Open File 2179.

Date de modification