PRESENTATION AND INTERPRETATION OF SEISMIC DATA

The present invention relates to a method of presentation and interpretation of three-dimensional seismic data. In particular, the present invention relates to a method and apparatus for identifying volumetric subterranean regions bounded by a surface in which a specific seismic characteristic has a constant value. In one embodiment, three-dimensional seismic data for a subterranean volume is provided as input to a computer program for performing "isosurface" processing of the data. This results in a graphical representation of three-dimensional sub-volumes whose boundaries are defined by surfaces in which a specific seismic characteristic has a constant value.