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.

Application of High-Resolution Aeromagnetic and Gamma-ray Spectrometry Surveys for Litho-Structural Mapping in Southwest China

“…The processing of aeromagnetic data generally involve transformations and filtering techniques, such as reduction to the pole (RTP), continuation, and derivatives [26][27][28][29][30][31][32][33][34][35]. In this study, several signal enhancement techniques were implemented.…”

Crude Oil Classification Based On Age And Provenance From The Southern Iraq: A Review

“…There are three subzones within the Mesopotamian Zone: the Zubair Subzone in the South, the Euphrates Subzone in the West, and the Tigris Subzone in the Northeast. The Tigris Subzone is the broadest part of the Mesopotamian Zone which contains expansive synclines and narrow anticlines associated with normal faults (Al-Heety et al, 2017).…”

Quantitative Interpretation of Gravity and Magnetic Anomalies in West of Tikrit City and Surroundings, Iraq

“…Both maps have scale of 1:1,000,000 with contour interval of 0.5mGal and 5Gamma for the Bouguer gravity and aeromagnetic maps, respectively. The original maps were digitized and shown in Figures- (4,5). In quantitative interpretation, isolation techniques are applied to gravity and magnetic data to extract anomalies of interest in the survey [1].…”

“…The purpose of gravity and magnetic modeling is to produce a geologic model satisfying their data and fitting all other available geological or geophysical data which can bear on the problem [3]. An important reason for using auxiliary geological and geophysical data is to decrease the ambiguities of gravity and magnetic interpretation [4].The study area lacks published gravitational and magnetic studies with exception of study [5]. They interpreted qualitatively the gravity and magnetic anomalies and presented gravity and magnetic lineaments maps.…”