Abstract
GRAVITY surveys are widely used as a method of geophysical exploration. A knowledge of the densities of the underlying rock layers is necessary for the interpretation of the results. While the density of samples may be determined in the laboratory, the only really satisfactory method of finding the bulk density is by gravity observations in a mineshaft or a borehole. The information obtainable by this method has been discussed by Smith1, who has also suggested further uses for the observations.
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References
Smith, Geophysics, 15, No. 4, 605 (1950).
Gilbert, Proc. Phys. Soc., B, 62, 445 (1949).
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GILBERT, R. Gravity Observations in a Borehole. Nature 170, 424–425 (1952). https://doi.org/10.1038/170424a0
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DOI: https://doi.org/10.1038/170424a0
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