Two independent methods of 3D quantitative interpretation were applied to local gravity highs induced by amphibolitic bodies in the pre-Alpine crystalline basement of the Tatric Bratislava Nappe in the Male Karpaty Mts. Best-fit models show a uniform crescent shape of steeply dipping anomalous bodies in vertical cross-sections. This shape is interpreted from a tectonic point of view as a result of inversion tectonics and over-thrusting, producing large-scale recumbent folds at the basement/cover interface in the frontal parts of the allochthonous Bratislava sheet.