الملخص

samples from the outcropping rocks of bai hassan, muqdadyia , injana, fatha and pila spi formations have been collected for density measurements supporting a gravity survey that has been planed over the area on either side of the greater zab river . the results are compared with densities measured from seismic stacking velocities made over four long seismic lines that have shot previously in the same area, furthermore a single velocity log from a well that penetrates these formations has been used, the results are presented and discussed