Investigation and interpretation of Eskişehir Graben by using potential field data (gravity and magnetic)

The geophysical data processing techniques of analytical continuations, trend analysis, filtering and second derivatives which can be applied to the potential field data, help to deduce the general structural properties of a region. For this purpose, gravity and magnetic datas Eskişehir and environment were analysed and the general structural properties of the region were tried to be determined by the above mentioned methods. Magnetic data, as well as reducing the pole, artificial gravity field and boundary analysis methods were applied. S-N taken in the direction of A-A' and B-B' cross sections were made on the gravity modeling work.In addition to the data-process method, in order to determine the topography of the underground base of gravity data variable / constant density based on the principle difference with the depth of 2 and 3-dimensional structure analysis was conducted. For this purpose, 1 km intervals, digitized gravity data used, the region's average density value was determined by looking to the geological data.Eskişehir and the potential of environmental field data applied to data-processing methods of the region as a result of the structural elements of the boundaries were placed, Kalkan with Altıpatlar between 4-5 km width of the finder, NW-SE extension with Pleyistosen of old sediments and Triassic ophiolitic communities occurring in the depth of field approximately 8-10 km in the basin depth that depression finds.In addition to this information, Eskisehir fault and Eskisehir graben is described as forming the northern flank of the fault trace significantly limit the assessment study have revealed.