Abstract: Aiming at the low vertical resolution of correlation imaging inversion in the mineral exploration， a correlation imaging inversion based on depth weighting with gravity gradiometry data is proposed. The vertical space resolution of the inversion would be improved by the means of combining multiple gravity gradiometry tensors， introducing the depth weighting function based on the prior information and the underground zonal weighting method. In the data test，it is demonstrated by the cube-combination model that the proposed method could inverse the objective location accurately， the numerical range of computed density is consistent with the theoretical model， and the method has the anti-noise ability. The inversion is then applied to the real gravity gradiometry data from Vinton Dome， U. S.， the location of the cap rock displayed in the results conforms to the known geological information. It is proved that the method is effective and practical.

Key words: gravity gradiometry data, zonal weighting, depth weighting function, correlation imaging inversion, Vinton Dome