Mapping of anomalies sources in the upper mantle on the basis of direct 2D gravity data interpretation

Direct interpretation of 2D gravity data sets by means of the Quasi-singular point’s method for 13 regional profiles along geographical meridians with step 1º within the central part of the East European platform is carried out. Many proofs of presence of anomalies sources in various depth ranges of the upper mantle are received. The relative error of sources depth is accepted equal 10 %. The same value is used for determination of confidential intervals, necessary for the graph representation of distribution of anomalies sources amount on depth. The received data testify to presence of the overwhelming majority of sources on a one regional geophysical (density?) surface. This boundary is located on depth 100 ± 30 km and reflects structural heterogeneities inside the bottom layer of lithosphere. The hypsometric map of gravity anomalies sources location in the upper mantle is created. Isolines steps of the map are in accordance with depth errors. Physical sense of anomalies sources - whether they are connected to change of substance, with change of density or with its gradient - requires the further studying.