Using of GIS on field geology studies; An application on central-southern of Eskişehir

Technological developments on Geographical Information Systems (GIS) make possible to use its applications on all departments of earth sciences. GIS based drill-hole data, lithological and structural maps are used integrated with field geolgy investigations in this study. The area where is bordered Batikent-Yukari Sogutonu districts on northwest and Vadisehir-Ihlamurkent districts on southeast is defined as study area. 44 water wells drilled by State Hydraulic Works (DSI) are located in various points of Eskisehir region were transformed to GIS base. Geological cross-sections which were designed by drill-hole lithology are point out a disconformity zones between Paleogene and Neogene according to principle of lateral continuity. Neotechtonic researches on study area Show thah right lateral strike slip shear zone dominates the region structurally. Searching these structural traces on the field and representing new field evidances by using GIS on the regions where there is no consensus stratigraphicly are the main purposes of the study. Geological map of the region where lies between Cankaya and Karapinar districts without consensus stratigrapichly was made by field observations on Miocene units. The other surface evidances include dilation fractures, strike-slip faults are support the idea which is suggested for Eskisehir region as right lateral strike-slip shear zone.