Correlation of Rock Properties by Statistical Methods

by William R. Judd, Carolyn R. Huber

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A statistical approach for correlating physical properties of rocks. Geological considerations are minimized, and the approach is based on a comparison of fourteen physical properties of rocks (i.e., apparent specific gravity, per cent porosity, scleroscope hardness, abrasive hardness, specific damping capacity, moduli of rigidity and rupture, static and dynamic moduli of elasticity, compressive strength, impact toughness, longitudinal velocity of sonic wave propagation, tensile strength, and Poisson's ratio). This paper deals with the "problem finding" or "debugging" phase in the use of computer and statistical methods for rock analysis that may ultimately determine equations for predicting the physical properties of rock within a relatively narrow and thus useful range.

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