f Seismic wave propagation in uncracked and cracked carrara marble

We have used a simple rock, Carrara marbIe, to test theories of seismic wave propagation through media containing suites of small cracks. The theories (Hudson 1980, 1981, 1986) predict the effects of the shape, alignment, filling and number density of the cracks on seismic velocity, attenuation and anisotropy. They are used in specialist seismic interpretation to evaluate cracks and crack alignment for determining the potential of oil and geothermal reservoirs and indicating stress regimes.