3-D Gravity modeling of basins with vertical prisms: Application to Salt Lake region (Turkey)
A novel 3D modeling method for interpreting gravity maps over sedimentary basins was successfully applied on synthetic data as well as real data from Salt Lake, Turkey. This method utilizes 3D prisms rather than 2D ones and an optimization technique for the estimation of the block thickness. The Salt Lake sedimentary basin is represented with a series of juxtaposed prisms that exhibit parabolic density contrast and different depth to the bottom of the prism. By fitting a parabolic density contrast function on well log data from the same region, we determined the parameters of this function, in order to interpret the gravity data from Salt Lake. The 3D gravity modeling provided depths to the bottom of the basin by minimizing the difference between calculated and observed gravity data. A depth map of the Salt Lake Basin indicates that the thickness of this sedimentary basin reaches a maximum depth of approximately 7 km.