Figure F82. Composite log of the density, neutron porosity, and sonic logs recorded in Hole 1224F. Track 1: bulk density (RHOB). Track 2: neutron porosity (NPHI). Track 3: compressional wave velocity from the monopole source (VPMP). Track 4: shear wave velocity (VS) log from the monopole source (black) and the shear wave velocity log from the lower dipole (red).