Structure of crust and moho depth have been determined in the eastern Black Sea region by three-dimensional gravity inversion modeling. First, seven profiles have been determined in the study area. The surfaces of layer were defined to divide by triangle surfaces in three-dimensional study. Three-dimensional gravity inversion was calculated by using a special algorithm for these model geometries by intensity of adoption. Under the seven different profiles in this region by 3D model accounts, as the first Black Sea water mass and average density of acceptance, also crust were accepted as the second mass. The gravity effect of black sea water was calculated with water absolute intensity, then have been removed from measured Bouguer anomaly values. Then, also sediment was included to inversion account and the three masses were used in the model. The calculated densities to be within the acceptable limits, by the boundary values under seven profiles were drawn to the optimum depths, by inversion accounts were repeated, the most likely depth of sediment and moho borders have been determined.
GRAVITY, 3D MODELING, DEPTH, CRUSTAL STRUCTURE, MOHO,