Camacho, AG, A.G.Montesinos, F. G.Vieira, Ricardo2023-06-202023-06-2020000016-803310.1190/1.1444729https://hdl.handle.net/20.500.14352/57460This paper presents a gravity inversion method for determining the volumes of bodies with pre-established density contrasts. The method works step-by-step on a prismatic partition of the subsurface volume, expanding the anomalous bodies to fit the observed gravity values in a systematic exploration of model possibilities. The process is treated in a 3-D context; at the same time, it can determine a simple regional trend. Moreover, positive and negative density contrasts are simultaneously accepted. The solution is obtained by a double condition: (1) the e(2)-fitness to the observed gravity data (model fitness) and (2) the minimization of the total (weighted) anomalous mass (model smoothness). A positive parameter is used to balance the two minimization terms. The method is applied to a simulated example and also to a real example: the volcanic island of Gran Canaria (Canary Islands, Spain). In both cases, the results obtained show the possibilities of the method.engjournal articlehttp://geophysics.geoscienceworld.org/content/65/1/95.full.pdf+htmlhttp://geophysics.geoscienceworld.org/open access550.3Canary-IslandsGran-CanariaGeochemistry & GeophysicsGeofísica2507 Geofísica