Using Azimuthal Resistivity Survey Technique to determining Subsurface Fractures of Quaternary Deposits in the University of Mosul - Northern Iraq

The current study includes conducting two-dimensional azimuthal electrical resistivity survey in order to obtain some subsurface electrical characteristics of the Quaternary deposits especially the directional asymmetry in resistivity values, which may reflect the direction of the fractures in these deposits. The survey includes two sites within the campus of the University of Mosul; the first site is located next to the university stadium at longitude and latitude (3638`16", 4313`86") respectively, and the second site is in the presidential palaces area near the waste dump at longitude and latitude (3638`85", 4314`41") respectively. A two-dimensional resistivity survey is used with an angle interval of 20 from the center of spread and in all directions. The survey includes the application of the Mutib and Al-Fadhel azimuthal system for radial, forward and backward surveys to measure apparent resistivity values and representing the data through drawings in cartesian and polar graphs, analyzing the results using the two-dimensional resistivity data interpretation program (RES2DINV). The current study shows good results in applying the Mutib and Al-Fadhel azimuthal system by the comparison between the three radials, forward and backward surveys. Many major and secondary tensile and shear fractures appeared in different directions within the sediments of Quaternary at the sites of the current study, which indicate the possibility of continuing tectonic activity to the present time and its impact on recent deposits and the geotectonical importance for these results.