Fig.8 Relationship between inverse P-wave quality factor (a) and inverse shear wave quality factor (b) and porosity in sandstones

Fig.9 Relationship between inverse quality factor and porpsity in igneous rocks (curves are logarithmic fis showing the trend of 1/Q with increasing porosity)

Fig.10 Inverse compressional (a) and shear (b) wave quality factor versus permeability for all rocks

Fig. 11 Relationship between inverse quality factor and clay content in sandstones

Fig.12 Relationship between inverse quality factor and chlorite (altered pyroxene) content in igneous rocks

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