Zones
Enable Fault Zones
Select this check box if you want to "fault" individual structural surfaces via a series of mutually exclusive polygons. The data present in each of the zones will be modelled independently within each polygon and the resultant patches of the grid model will be joined together at the polygon boundaries to form the final grid. Refer to the Load Fault Zones option (under the Grid Calc > Faults submenu) for more information.
You will need to specify the design database containing the zone polygons as well as the structural grid(s) that are to be faulted. The relevant layers and objects containing the zone polygons are then associated with each horizon.
A good way to create zone style polygons is to create an overall bounding polygon and then use the Build option (under the Design > Polygon Edit submenu).
The available faulting options are not mutually exclusive.
If desurvey information is available, it is used by default when generating grid surfaces using this tool.
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