The physical properties of basalt at DSDP Hole 45-395A

Most of the variations in the basalt properties follow the porosity, with smaller inferred dependence on pore structure, original mineralogy differences, and alteration. The sample measurements give very similar results to (and extend previous data from) Mid-Atlantic Ridge drillholes, the sample data from this site and previous data are used to estimate relations between porosity and other large-scale physical properties of the upper oceanic crust applicable to this area.

These relations are important for the analysis and interpretation of downhole logging measurements and marine geophysical data.