Explorationists rely on the GeoDepth velocity determination and 3D/2D velocity model building system to create accurate seismic imaging in either time or depth. Through the integration of interpretation, velocity analysis, model building and updating, model validation, depth imaging, and time-to-depth conversion, GeoDepth provides the continuity needed to produce high-quality, interpretable images consistent with other available data, while preventing data loss and honoring geologic constraints.