f Modelling complex faults - the Gocad approach

Up to now, classical softwares based on automatic mapping and classical computer aided design techniques have not considered faults as geological objects having specific properties. From a geological point of view, a fault can be viewed as a surface intersetting horizons or layers, and the relationships between a fault and a horizon are not symetrical.(see figure1) • the fault cuts the horizon. • the horizon has a border line located on the fault .