Skip to Main Content
Book Chapter

Terrain Geochemistry in Canada

By
R.N.W. DiLabio
R.N.W. DiLabio
Geological Survey of Canada601 Booth StreetOttawa, OntarioK1A 0E8
Search for other works by this author on:
Published:
January 01, 1989

Abstract

Terrain geochemistry is the study of the geochemistry of surficial materials to solve geological and environmental problems. The areal and stratigraphic collection of geochemical data shows the natural geochemical variation between extremes of impoverishment and enrichment of components in surficial materials. In Canada’s glaciated landscape, till is the prime sample type because it is widespread and because it is first-cycle sediment that has a relatively simple history of erosion, transport, and deposition. Trace and minor element data sets exist for till and other media in many areas of the country at reconnaissance and detailed scales of sampling. These data are usable for mineral exploration, for environmental studies, and for studies of Quaternary stratigraphy, mapping, and history.

Drift prospecting is the determination of the provenance of glacial sediments (mainly till) in the search for mineral deposits. This exploration method is based on the premise that debris is usually eroded glacially from a subcropping ore deposit and the debris is deposited in a coherent dispersal train down-ice from the source. Boulder tracing and geochemical analysis of till are the main techniques for mapping dispersal trains.

Recycled till and other glacial sediments, organic detritus, and debris eroded directly from bedrock all contribute to postglacial stream and lake sediments. These sampling media have been used over large regions of the country to characterize the surficial geochemistry of areas where till is unavailable or not economical to collect.

In environmental geology and geomedicine, geochemical data on surficial sediments form the basis for estimating the sensitivity of terrain

You do not currently have access to this article.

Figures & Tables

Contents

DNAG, Geology of North America

Quaternary Geology of Canada and Greenland

R.J. Fulton
R.J. Fulton
Search for other works by this author on:
Geological Society of America
Volume
K1
ISBN electronic:
9780813754604
Publication date:
January 01, 1989

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal