Abstract
Zonal areas of a randomly chosen section through a concentrically zoned sphere yield an estimate of the (volumetric) amount of the outer zone which is subject to a large positive bias that decreases rapidly with increase in the number of sections on which the estimate is based. It will not exceed 3% of the amount present if an analysis is based on as many as 8 sections and will be less than 1% if 32 sections are used.
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Chayes, F. The delesse relation in a concentrically zoned sphere. I. The section-number bias. Math Geol 21, 319–329 (1989). https://doi.org/10.1007/BF00893693
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DOI: https://doi.org/10.1007/BF00893693