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  • 1
    Electronic Resource
    Electronic Resource
    Exploration geochemistry—Distribution of elements and recognition of anomalies (1975)
    Springer
    Mathematical geology 7 (1975), S. 415-446 
    Details
    ISSN: 1573-8868
    Keywords: data processing ; discriminant analysis ; graphics ; mapping ; sampling ; simulation ; geochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract The exploration geochemist faces a serious problem in reconciling theoretical statistics with the empirical distribution of elements in materials in the earth's crust. The results of computer-simulation experiments being conducted by the Exploration Geochemistry Group at the University of New Brunswick illustrate some of the problems of the relation between frequency distributions and spatial distributions of elements and raise some interesting questions about sampling patterns and physical size of samples. Most importantly, the simulation experiments and empirical examples support the contention that attempts to make an assumption of normality more efficient by performing log transformations on positively skewed data may defeat the purpose of statistical analysis for exploration work. New developments in computer-data presentation and interpretation, including population sorting and classification, illustrate the increasing use of the computer in exploration geochemistry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02080498
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Statistical map analysis techniques applied to regional distribution of uranium in stream sediment samples from the southeastern United States for the National Uranium Resource Evaluation Program (1980)
    Springer
    Mathematical geology 12 (1980), S. 339-366 
    Details
    ISSN: 1573-8868
    Keywords: uranium ; exploration geochemistry ; data display ; mapping digital filtering ; modeling ; computer graphics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract The U.S. Department of Energy National Uranium Resource Evaluation Program is collecting stream sediment samples at a nominal density of one per 13 km2 from two-degree quadrangles throughout the United States. Each sample has been analyzed for from 14 to 43 chemical elements and other variables. We describe new methods of statistical map analysis, which we have applied to the regional distribution of multielement data from four two-degree quandrangles in the southeastern United States including parts of the southern Appalachian Mountains and the Coastal Plain, with particular reference to uranium distributions. Patterns of uranium distribution are clearly related to the geological provinces and also to individual geologic belts, plutons, and smaller stratigraphic subdivisions. Our work developed several anomalies, some of which were followed up by additional field sampling in 1979 and 1980.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01029420
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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