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The median surface: a new type of trend surface

Published online by Cambridge University Press:  01 May 2009

A. Hall
A. Hall
Affiliation:
Department of Geology, King's College, Strand, London WC2R 2LS
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Summary

A conventional trend surface is symmetrically placed between the observed values of a dependent variable. The proposed median surface is symmetrically placed between the ranks of the observed values. The use of a median surface is illustrated by its application to the distribution of silver in a granodiorite stock.

Type
Articles
Information
Geological Magazine , Volume 110 , Issue 5 , September 1973 , pp. 467 - 472
Copyright
Copyright © Cambridge University Press 1973

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References

Mantei, E., Bolter, E. & Al Shaieb, Z. 1970. Distribution of gold, silver, copper, lead and zinc in the productive Marysville Stock, Montana. Mineralium Deposita 5, 184–90.Google Scholar
O'Leary, M., Lippert, R. H. & Spitz, O. T. 1966. FORTRAN IV and MAP program for co mputation and plotting of trend surfaces for degrees 1 through 6. Computer Contrib. Kansas geol. Survey, no. 3, 48 pp.Google Scholar
Snedecor, G. W. & Cochran, W. G. 1967. Statistical methods, 6th edition. Iowa State University Press.Google Scholar