Abstract

Copper and zinc are so widespread in soils and vegetation that any attempt to apply biogeochemistry in search for buried ore bodies of these metals necessitates an accurate knowledge of the distribution of these elements in the absence of mineralization.

In this paper normal and abnormal, or anomalous, contents of copper and zinc in different organs of various ages have been determined and tabulated for the more common trees and lesser plants of the Pacific Northwest.

Some ways by which biogeochemical data may be used are described, including a brief discussion of statistical diagrams and profiles. Some common errors are discussed. Two sets of diagrams illustrating successful applications of biogeochemical data are also given.

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