A computer-implemented method to model a subterranean formation of a field , comprising: obtaining a seismic volume comprising a plurality of seismic traces of the subterranean formation of the field that are measured at receiver locations in the field; computing, based on the seismic volume , a seismically-derived value of a structural attribute representing a structural characteristic of the subterranean formation ; computing, based on a structural model, a structurally-derived value of the structural attribute, the structural model comprising a plurality of structural layers (302-1 through 302-6) of the subterranean formation ; comparing the seismically-derived value and the structurally-derived value to generate a difference value representing a discrepancy of modeling the structural attribute at a corresponding location in the subterranean formation ; and generating a seismic interpretation result based on the difference value and the corresponding location; characterized in that the method further comprises: determining, based on a sequence of the plurality of structural layers (302-1 through 302-6), a plurality of relative geologic ages of the plurality of structural layers (302-1 through 302-6); determining the structurally-derived value of the structural attribute based on the plurality of relative geologic ages; deriving an implicit function from the seismic data (311-1); generating a screenshot (F302) showing values of the implicit function representing the relative geological ages of the structural layers (302-1 through 302-6); and using the implicit function to compute a gradient of the relative geological ages. obtaining a seismic volume comprising a plurality of seismic traces of the subterranean formation of the field that are measured at receiver locations in the field; computing, based on the seismic volume , a seismically-derived value of a structural attribute representing a structural characteristic of the subterranean formation ; computing, based on a structural model, a structurally-derived value of the structural attribute, the structural model comprising a plurality of structural layers (302-1 through 302-6) of the subterranean formation ; comparing the seismically-derived value and the structurally-derived value to generate a difference value representing a discrepancy of modeling the structural attribute at a corresponding location in the subterranean formation ; and generating a seismic interpretation result based on the difference value and the corresponding location; characterized in that the method further comprises: determining, based on a sequence of the plurality of structural layers (302-1 through 302-6), a plurality of relative geologic ages of the plurality of structural layers (302-1 through 302-6); determining the structurally-derived value of the structural attribute based on the plurality of relative geologic ages; deriving an implicit function from the seismic data (311-1); generating a screenshot (F302) showing values of the implicit function representing the relative geological ages of the structural layers (302-1 through 302-6); and using the implicit function to compute a gradient of the relative geological ages. <EOS>