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  • 1
    Electronic Resource
    Electronic Resource
    ASSESSING POTENTIAL SOURCES OF ASBESTOS FIBERS IN WATER SUPPLIES OF S. E. QUEBEC (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of the American Water Resources Association 22 (1986), S. 0 
    Details
    ISSN: 1752-1688
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: : A comparative study of the concentration of asbestos fibers in drinking water supplies of southeastern Quebec was undertaken to assess the relative contributions of fibers by asbestos-bearing railway ballast and naturally occurring asbestos deposits. Water samples were taken from areas where one or the other potential sources or neither potential source was present. In addition, rainwater samples were taken to assess the importance of atmospheric contributions. The sampling design accounted for potential variations in fiber counts due to the season, location and analytical procedures.Fiber concentrations were estimated from counts made on a JEOL 100CX scanning transmission electron microscope and statistically compared among areas. These levels were then compared with levels found in other areas of Canada and the United States.The results indicate that the rail ballast could be contributing statistically (albeit marginally) significant quantities of fibers to water supplies during the summer but not in the spring. Estimated concentrations in water supplies ranged between 1.7 × 106fibers/liter and 147.8 × 106fibers/liter. Fiber levels in samples taken during the spring were significantly higher and more variable than those taken during the summer. The presence of fibers in rainwater samples at concentrations of 1.9 × 106fibers/liter, 18.3 × 106fibers/liter and 23.7 × 106fibers/liter suggests that atmospheric transport may play an important role in contributing fibers to regional systems. Fiber levels found in these systems are not unique when compared to levels observed elsewhere in North America.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1752-1688.1986.tb01856.x
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  • 2
    Electronic Resource
    Electronic Resource
    Proton beam diagnostics using optical spectroscopy
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 10-11 (1985), S. 822-824 
    Details
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-583X(85)90117-X
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Photochemistry of 2-cyanofuran
    Amsterdam : Elsevier
    Journal of Photochemistry and Photobiology A: Chemistry 78 (1994), S. 15-17 
    Details
    ISSN: 1010-6030
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/1010-6030(93)03726-W
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  • 4
    Electronic Resource
    Electronic Resource
    Genesis of upper proterozoic stratabound copper mineralization, Kapunda, South Australia (1980)
    Springer
    Mineralium deposita 15 (1980), S. 1-18 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Chalcopyrite-rich bedded and vein mineralization at Kapunda occurs in two locally developed dolosiltstone units within a sequence of generally darker-coloured, finer-grained calcmudstones and siltstones. The Mine Series accumulated in shallow water to supratidal, sabkha-like environments; there is no evidence for igneous activity in the region. Isotope data for bedded sulphides are characteristic of biological sulphate reduction in a restricted basin. It is likely that iron sulphides were produced initially, and that copper was introduced subsequently in mildly oxidizing, highly saline groundwaters, the influence of which is seen in the δ13C-δ18O correlation for dolomite in the mineralized siltstones. Isotopic data support derivation of the veins from their host sediments, and this appears to have occurred before lithification.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00202840
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  • 5
    Electronic Resource
    Electronic Resource
    Stratiform copper in the late proterozoic Boorloo delta, South Australia (1980)
    Springer
    Mineralium deposita 15 (1980), S. 139-149 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The stratigraphic setting and geological environment of the Boorloo stratiform copper prospect is described. This prospect occurs in the Umberatana Group of the Adelaide Supergroup in the Willouran Ranges of South Australia. Stratiform copper mineralization occurs in stacked, braided, siliciclastic channels on the middle and distal portions of a late Proterozoic river-dominated delta. Comparison is made between this river-dominated delta copper system and the much larger river-dominated delta copper system of the Proterozoic Udokan deposit in the U. S. S. R. It is suggested that the traditional classifications of stratiform copper sensu strictu deposits as arenaceous-ore or oreshale can be viewed as dip-system or strike-system deposits respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206509
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  • 6
    Electronic Resource
    Electronic Resource
    Reply to C. R. Dalgarno's discussion (1981)
    Springer
    Mineralium deposita 16 (1981), S. 187-188 
    Details
    ISSN: 1432-1866
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206465
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  • 7
    Electronic Resource
    Electronic Resource
    Zipf's law—An aid to resource inventory prediction in partially explored areas (1977)
    Springer
    Mathematical geology 9 (1977), S. 383-391 
    Details
    ISSN: 1573-8868
    Keywords: probability distributions ; resource evaluation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract Zipf's Law is a mathematical expression of the relationship between size and rank orders of some discrete phenomena. We have used this relationship to predict the undiscovered viable copper reserves for the Zambian Copperbelt. This prediction has been reinforced by canvassing geological opinion. As two semi-numerate exploration geologists, we naively risk predicting the undiscovered gold resources of the West Australian shield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02047409
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    Paper (German National Licenses)
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