In this study, the parametric curves technique that estimates the shape and depth of a buried structure simultaneously, was applied to derivatives of residual gravity data. This method uses the origin and characteristic points of the profile data to establish a relationship between the shape and depth of the source. The first-order derivative of residual gravity data was used for buried sphere, horizontal cylinder, vertical cylinder and semi-infinite vertical dyke models, whereas second-order derivative of residual gravity data was used for vertical fault model. Besides, a software was developedto apply the method on synthetic and field databy using the .NET Framework 4.5 and C# language. This method was applied to five synthetic modelsandthe shape factors were determined for each models. In addition to synthetic examples, aresidual gravity map from Turkeywasused to test the validity of the method on real data.Bothproposed method and power spectrum method were applied on three profile data obtained from the study area and estimated depths were compared witheach other. Finally, a3D modelof the Erzincan-Çayırlı Basin was created using the estimated depths.