Abstract
TOLMAN1 shows, in his work on underground water, that over a large area there are water provinces ; and Bond2, in South Africa, after a geochemical survey, has grouped the underground waters of South Africa into five main types. In any of these areas local anomalies are found, so that it is necessary to divide the waters into districts (say, areas of 100 square miles or so) and sub-districts and portions of smaller area. It has been found that electrical resistivity measurements are primarily dependent upon the rock formations over which the work is carried out, and as water is a mineral and when in bulk constitutes a rock formation, its chemical nature and hence its resistivity are most important.
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References
Tolman, C. F., "Underground Water", chapter 17.
Bond, G. F., Mem. 41, Union of S. Africa Geological Survey.
Heiland, C. A., "Geophysical Exploration", 638.
Enslin, J. F., Trans. Geol. Soc. S. Africa (in the press).
A recent company report on the Messina area.
Geological Survey Mem. 39, 70, 109.
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BOSAZZA, V. Underground Water Provinces, Districts and Sub-Districts. Nature 164, 371 (1949). https://doi.org/10.1038/164371a0
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DOI: https://doi.org/10.1038/164371a0
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