Qualitative Interpretation of Gravity and Aeromagnetic Data in West of Tikrit City and Surroundings, Iraq

Abstract

The qualitative interpretation of anomalies of the gravity and the magnetic fields at the west of Tikrit City and surroundings, Iraq, was carried out. According to the tectonic framework of Iraq, the study area is classified as a part of the stable shelf unit. The polynomial technique was employed to separate the residual-regional anomalies as a first step in the qualitative interpretation. Bouguer gravity anomaly map did not exhibit any clear closures. The magnetic maps showed remarkable high closure in the central eastern part of the study area. The regional gravity and magnetic fields values decline towards the eastern parts of the maps (Mesopotamian Basin) in consistent with the increase in the sedimentary cover (basement depth). The residual gravity and magnetic maps displayed several positive and negative closures. The gravity and magnetic lineaments were depicted and superimposed on the tectonic map of the study area. The rose diagram showed that the dominant orientation of the gravity and magnetic lineaments was toward NE-SW.