Authors

Abstract

The conventional remotely-sensed satellite imagery is suited for regional
investigations in areas of good exposures which are reduced in southern Iraq due to
vegetation, water – covered areas and flat terrains. An imagery produced from
digitally processed geophysical data is an extremely powerful technique for
identification of geological features in such areas of extreme economic importance .
By utilizing an appropriate digital processing, the geophysical contour maps have
been converted to geophysical images. Images produced from digitally processed
geophysical data (gravity and aeromagnetic) have been analyzed by polynomial
filtering ( using several degrees ) allow major features to be delineated clearly. An
integrated image of gravity and aeromagnetic data sets has been produced using the
best of polynomial filtering ( 6th degree residuals ) . The interpretation of final output
images shows the association of negative gravity and magnetic residual anomalies
with some anticlinal structures , while positive residuals are associated with the
others. The positive residuals could be due to basement uplift , and the reversed
values could be due to deep- seated light core probably salt beds. Basrah depression
exhibits negative residuals.

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