ABSTRACT

The results of earlier tests of the plasticity of halite are summarized. Recent determinations of the flowage pressure of rock salt at various temperatures ranging from 20° to 155° C. with an apparatus of improved design indicate a marked influence of temperature upon the plasticity of this material. The results are favorable to the opinion that deep burial, as well as deformation, may be sufficient to cause the upward movement of salt masses along lines of weakness.

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