SOUND VELOCITIES IN ROCKS AND MINERALS.
VESIAC State-of-the-art rept.,
MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY
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This state-of-the-art report summarizes experiments and data on sound velocities in rocks and minerals and projects useful lines of research. The report discusses in detail the three common measuring techniques now employed 1 resonance methods, 2 pulse-transmission methods time-of-flight, and 3 ultrasonic-interferometric methods. Promising techniques, both direct and indirect, are described, the most important of these is the resonance of small spheres. Methods of estimating elastic constants at high pressure and high temperature are indicated. The data extant on the sound velocities in rocks and minerals are considerable and are tabulated in several appendixes. The lack of systematic coverage and quality of these data is discussed. A method of estimating unmeasured properties in a class of rocks, using data already reported for that class, is reviewed. Techniques of estimating isotropic sound velocities from single-crystal elastic-constant data are reviewed. Author
- Geology, Geochemistry and Mineralogy