Gravity Modelling Of Cumra-Konya Region Bouguer Anomalies

Abstract

Summary Konya – Cumra region has several rock formations from different time periods as a result of the location’s geological past. The Bouguer anomaly map shows abnormally high values around Konya Basin where only Cretaceous clastics visible on the surface. The anomaly is studied using spectral analysis and modelled using vertical prisms method in order to achieve a rough underground structure model. The modelling carried assuming a single layer with constant mean depth and density contrast; however, the extra mass calculations carried after modelling process makes other conclusions possible. One of the simplest explanation for the anomaly is an obducted oceanic crust block which may be emplaced during or right after the closing of Thetis Ocean. Another possible explanation is a magmatic intrusion that may have resulted from subduction during closing of Thetis Ocean. Both these theses explain the high Bouguer Anomaly in the Konya – Cumra area, depending on density contrast.