Visualization of geochemical data on maps; new options

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doi: 10.1016/0375-6742(87)90072-0
Authors:Bjorklund, A.; Gustavsson, N.
Author Affiliations:Primary:
Geol. Surv. Finl., Espoo, Finland
Volume Title:Geochemical exploration 1985; Part II, Proceedings of the 11th international geochemical symposium
Volume Authors:Garrett, R. G., editor
Source:Journal of Geochemical Exploration, 29(1-3), p.89-103; 11th international geochemical exploration symposium, Toronto, ON, Canada, Apr. 28-May 2, 1985, edited by R. G. Garrett. Publisher: Elsevier, Amsterdam-New York, International. ISSN: 0375-6742
Publication Date:1987
Note:In English. 8 refs.; illus. incl. sketch maps
Summary:A technique for the display of data on maps was developed in which the diameter of dots is related to metal content by a continuous function curve defined by the user. The resolution of the content-variation pattern can be adjusted to the error variation and the user can accentuate the visual contrast of any content interval when deciding on the form and slope of the function curve. To enhance linear features in the content-variation pattern, a technique is used where a content surface is mathematically 'illuminated' to give an impression of a relief containing elements of light and shadow. For easy recognition of covariation in the data, a new technique was developed for simultaneous presentation of the variation of three variables on a single map. [J.M.H.]
Subjects:Geochemical maps; Geochemistry; Maps; Europe; Finland; Scandinavia; Western Europe
Abstract Numbers:88M/0595
Record ID:1987082318
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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