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Progress in Earth and Planetary Science
Fig. 4 | Progress in Earth and Planetary Science

Fig. 4

From: Simultaneous measurements of elastic wave velocities and electrical conductivity in a brine-saturated granitic rock under confining pressures and their implication for interpretation of geophysical observations

Fig. 4

Volumetric strain of dry rock sample AJG07 as a function of confining pressure. The increasing rate in the volumetric strain decreases with increasing confining pressure. The broken line passing two points at 150 and 180 MPa is extrapolated to 0 MPa to give 0.15 % as the lower bound of the crack porosity

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